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-rw-r--r--libc/string/bfin/memchr.S4
-rw-r--r--libc/string/bfin/strcmp.S80
-rw-r--r--libc/string/generic/strtok_r.c14
-rw-r--r--libc/string/ia64/bzero.S136
-rw-r--r--libc/string/ia64/memccpy.S102
-rw-r--r--libc/string/ia64/memchr.S32
-rw-r--r--libc/string/ia64/memcmp.S94
-rw-r--r--libc/string/ia64/memcpy.S160
-rw-r--r--libc/string/ia64/memmove.S170
-rw-r--r--libc/string/ia64/memset.S178
-rw-r--r--libc/string/ia64/strchr.S32
-rw-r--r--libc/string/ia64/strcmp.S2
-rw-r--r--libc/string/ia64/strcpy.S66
-rw-r--r--libc/string/ia64/strlen.S18
-rw-r--r--libc/string/ia64/strncmp.S10
-rw-r--r--libc/string/ia64/strncpy.S90
-rw-r--r--libc/string/sh64/memcpy.S2
-rw-r--r--libc/string/sh64/memset.S29
-rw-r--r--libc/string/sh64/strcpy.S28
-rw-r--r--libc/string/xtensa/memcpy.S22
-rw-r--r--libc/string/xtensa/memset.S12
-rw-r--r--libc/string/xtensa/strcmp.S148
-rw-r--r--libc/string/xtensa/strcpy.S72
-rw-r--r--libc/string/xtensa/strlen.S56
-rw-r--r--libc/string/xtensa/strncpy.S150
25 files changed, 854 insertions, 853 deletions
diff --git a/libc/string/bfin/memchr.S b/libc/string/bfin/memchr.S
index 88e46bef6..26d419f7c 100644
--- a/libc/string/bfin/memchr.S
+++ b/libc/string/bfin/memchr.S
@@ -25,8 +25,8 @@
.weak _memchr
ENTRY(_memchr)
- P0 = R0; // P0 = address
- P2 = R2; // P2 = count
+ P0 = R0; /* P0 = address */
+ P2 = R2; /* P2 = count */
R1 = R1.B(Z);
CC = R2 == 0;
IF CC JUMP .Lfailed;
diff --git a/libc/string/bfin/strcmp.S b/libc/string/bfin/strcmp.S
index 12e8c53c6..ef23aa9ab 100644
--- a/libc/string/bfin/strcmp.S
+++ b/libc/string/bfin/strcmp.S
@@ -29,66 +29,66 @@ ENTRY(_strcmp)
p1 = r0;
p2 = r1;
- p0 = -1; // (need for loop counter init)
+ p0 = -1; /* (need for loop counter init) */
- // check if byte aligned
- r0 = r0 | r1; // check both pointers at same time
- r0 <<= 30; // dump all but last 2 bits
- cc = az; // are they zero?
- if !cc jump .Lunaligned; // no; use unaligned code.
- // fall-thru for aligned case..
+ /* check if byte aligned */
+ r0 = r0 | r1; /* check both pointers at same time */
+ r0 <<= 30; /* dump all but last 2 bits */
+ cc = az; /* are they zero? */
+ if !cc jump .Lunaligned; /* no; use unaligned code. */
+ /* fall-thru for aligned case.. */
- // note that r0 is zero from the previous...
- // p0 set to -1
+ /* note that r0 is zero from the previous... */
+ /* p0 set to -1 */
LSETUP (.Lbeginloop, .Lendloop) lc0=p0;
- // pick up first words
+ /* pick up first words */
r1 = [p1++];
r2 = [p2++];
- // make up mask: 0FF0FF
+ /* make up mask: 0FF0FF */
r7 = 0xFF;
r7.h = 0xFF;
- // loop : 9 cycles to check 4 characters
+ /* loop : 9 cycles to check 4 characters */
cc = r1 == r2;
.Lbeginloop:
- if !cc jump .Lnotequal4; // compare failure, exit loop
+ if !cc jump .Lnotequal4; /* compare failure, exit loop */
- // starting with 44332211
- // see if char 3 or char 1 is 0
- r3 = r1 & r7; // form 00330011
- // add to zero, and (r2 is free, reload)
+ /* starting with 44332211 */
+ /* see if char 3 or char 1 is 0 */
+ r3 = r1 & r7; /* form 00330011 */
+ /* add to zero, and (r2 is free, reload) */
r6 = r3 +|+ r0 || r2 = [p2++] || nop;
- cc = az; // true if either is zero
- r3 = r1 ^ r3; // form 44002200 (4321^0301 => 4020)
- // (trick, saves having another mask)
- // add to zero, and (r1 is free, reload)
+ cc = az; /* true if either is zero */
+ r3 = r1 ^ r3; /* form 44002200 (4321^0301 => 4020) */
+ /* (trick, saves having another mask) */
+ /* add to zero, and (r1 is free, reload) */
r6 = r3 +|+ r0 || r1 = [p1++] || nop;
- cc |= az; // true if either is zero
- if cc jump .Lzero4; // leave if a zero somewhere
+ cc |= az; /* true if either is zero */
+ if cc jump .Lzero4; /* leave if a zero somewhere */
.Lendloop:
cc = r1 == r2;
- // loop exits
-.Lnotequal4: // compare failure on 4-char compare
- // address pointers are one word ahead;
- // faster to use zero4 exit code
+ /* loop exits */
+.Lnotequal4: /* compare failure on 4-char compare */
+ /* address pointers are one word ahead; */
+ /* faster to use zero4 exit code */
p1 += 4;
p2 += 4;
-.Lzero4: // one of the bytes in word 1 is zero
- // but we've already fetched the next word; so
- // backup two to look at failing word again
+.Lzero4: /* one of the bytes in word 1 is zero */
+ /* but we've already fetched the next word; so */
+ /* backup two to look at failing word again */
p1 += -8;
p2 += -8;
- // here when pointers are unaligned: checks one
- // character at a time. Also use at the end of
- // the word-check algorithm to figure out what happened
+ /* here when pointers are unaligned: checks one */
+ /* character at a time. Also use at the end of */
+ /* the word-check algorithm to figure out what happened */
.Lunaligned:
- // R0 is non-zero from before.
- // p0 set to -1
+ /* R0 is non-zero from before. */
+ /* p0 set to -1 */
r0 = 0 (Z);
r1 = B[p1++] (Z);
@@ -96,18 +96,18 @@ ENTRY(_strcmp)
LSETUP (.Lbeginloop1, .Lendloop1) lc0=p0;
.Lbeginloop1:
- cc = r1; // first char must be non-zero
- // chars must be the same
+ cc = r1; /* first char must be non-zero */
+ /* chars must be the same */
r3 = r2 - r1 (NS) || r1 = B[p1++] (Z) || nop;
cc &= az;
- r3 = r0 - r2; // second char must be non-zero
+ r3 = r0 - r2; /* second char must be non-zero */
cc &= an;
if !cc jump .Lexitloop1;
.Lendloop1:
r2 = B[p2++] (Z);
-.Lexitloop1: // here means we found a zero or a difference.
- // we have r2(N), p2(N), r1(N+1), p1(N+2)
+.Lexitloop1: /* here means we found a zero or a difference. */
+ /* we have r2(N), p2(N), r1(N+1), p1(N+2) */
r1=B[p1+ -2] (Z);
r0 = r1 - r2;
(r7:4) = [sp++];
diff --git a/libc/string/generic/strtok_r.c b/libc/string/generic/strtok_r.c
index d082d226e..7648212f7 100644
--- a/libc/string/generic/strtok_r.c
+++ b/libc/string/generic/strtok_r.c
@@ -29,17 +29,17 @@
# define __rawmemchr strchr
/* Experimentally off - libc_hidden_proto(strchr) */
#endif
-
-/* Parse S into tokens separated by characters in DELIM.
+#if 0
+ Parse S into tokens separated by characters in DELIM.
If S is NULL, the saved pointer in SAVE_PTR is used as
the next starting point. For example:
char s[] = "-abc-=-def";
char *sp;
- x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
- x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
- x = strtok_r(NULL, "=", &sp); // x = NULL
- // s = "abc\0-def\0"
-*/
+ x = strtok_r(s, "-", &sp); /* x = "abc", sp = "=-def" */
+ x = strtok_r(NULL, "-=", &sp); /* x = "def", sp = NULL */
+ x = strtok_r(NULL, "=", &sp); /* x = NULL */
+ /* s = "abc\0-def\0" */
+#endif
char *strtok_r (char *s, const char *delim, char **save_ptr)
{
char *token;
diff --git a/libc/string/ia64/bzero.S b/libc/string/ia64/bzero.S
index d390838a6..1f0f8b7ac 100644
--- a/libc/string/ia64/bzero.S
+++ b/libc/string/ia64/bzero.S
@@ -47,13 +47,13 @@
#define ptr1 r28
#define ptr2 r27
#define ptr3 r26
-#define ptr9 r24
+#define ptr9 r24
#define loopcnt r23
#define linecnt r22
#define bytecnt r21
-// This routine uses only scratch predicate registers (p6 - p15)
-#define p_scr p6 // default register for same-cycle branches
+/* This routine uses only scratch predicate registers (p6 - p15) */
+#define p_scr p6 /* default register for same-cycle branches */
#define p_unalgn p9
#define p_y p11
#define p_n p12
@@ -65,7 +65,7 @@
#define MIN1 15
#define MIN1P1HALF 8
#define LINE_SIZE 128
-#define LSIZE_SH 7 // shift amount
+#define LSIZE_SH 7 /* shift amount */
#define PREF_AHEAD 8
#define USE_FLP
@@ -87,49 +87,49 @@ ENTRY(bzero)
movi0 save_lc = ar.lc
} { .mmi
.body
- mov ret0 = dest // return value
+ mov ret0 = dest /* return value */
nop.m 0
cmp.eq p_scr, p0 = cnt, r0
;; }
{ .mmi
- and ptr2 = -(MIN1+1), dest // aligned address
- and tmp = MIN1, dest // prepare to check for alignment
- tbit.nz p_y, p_n = dest, 0 // Do we have an odd address? (M_B_U)
+ and ptr2 = -(MIN1+1), dest /* aligned address */
+ and tmp = MIN1, dest /* prepare to check for alignment */
+ tbit.nz p_y, p_n = dest, 0 /* Do we have an odd address? (M_B_U) */
} { .mib
mov ptr1 = dest
nop.i 0
-(p_scr) br.ret.dpnt.many rp // return immediately if count = 0
+(p_scr) br.ret.dpnt.many rp /* return immediately if count = 0 */
;; }
{ .mib
cmp.ne p_unalgn, p0 = tmp, r0
-} { .mib // NB: # of bytes to move is 1
- sub bytecnt = (MIN1+1), tmp // higher than loopcnt
- cmp.gt p_scr, p0 = 16, cnt // is it a minimalistic task?
-(p_scr) br.cond.dptk.many .move_bytes_unaligned // go move just a few (M_B_U)
+} { .mib /* NB: # of bytes to move is 1 */
+ sub bytecnt = (MIN1+1), tmp /* higher than loopcnt */
+ cmp.gt p_scr, p0 = 16, cnt /* is it a minimalistic task? */
+(p_scr) br.cond.dptk.many .move_bytes_unaligned /* go move just a few (M_B_U) */
;; }
{ .mmi
-(p_unalgn) add ptr1 = (MIN1+1), ptr2 // after alignment
-(p_unalgn) add ptr2 = MIN1P1HALF, ptr2 // after alignment
-(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 3 // should we do a st8 ?
+(p_unalgn) add ptr1 = (MIN1+1), ptr2 /* after alignment */
+(p_unalgn) add ptr2 = MIN1P1HALF, ptr2 /* after alignment */
+(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 3 /* should we do a st8 ? */
;; }
{ .mib
(p_y) add cnt = -8, cnt
-(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 2 // should we do a st4 ?
+(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 2 /* should we do a st4 ? */
} { .mib
(p_y) st8 [ptr2] = r0,-4
(p_n) add ptr2 = 4, ptr2
;; }
{ .mib
(p_yy) add cnt = -4, cnt
-(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 1 // should we do a st2 ?
+(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 1 /* should we do a st2 ? */
} { .mib
(p_yy) st4 [ptr2] = r0,-2
(p_nn) add ptr2 = 2, ptr2
;; }
{ .mmi
- mov tmp = LINE_SIZE+1 // for compare
+ mov tmp = LINE_SIZE+1 /* for compare */
(p_y) add cnt = -2, cnt
-(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 0 // should we do a st1 ?
+(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 0 /* should we do a st1 ? */
} { .mmi
nop.m 0
(p_y) st2 [ptr2] = r0,-1
@@ -138,44 +138,44 @@ ENTRY(bzero)
{ .mmi
(p_yy) st1 [ptr2] = r0
- cmp.gt p_scr, p0 = tmp, cnt // is it a minimalistic task?
+ cmp.gt p_scr, p0 = tmp, cnt /* is it a minimalistic task? */
} { .mbb
(p_yy) add cnt = -1, cnt
-(p_scr) br.cond.dpnt.many .fraction_of_line // go move just a few
+(p_scr) br.cond.dpnt.many .fraction_of_line /* go move just a few */
;; }
{ .mib
- nop.m 0
+ nop.m 0
shr.u linecnt = cnt, LSIZE_SH
nop.b 0
;; }
.align 32
-.l1b: // ------------------// L1B: store ahead into cache lines; fill later
+.l1b: /* ------------------ L1B: store ahead into cache lines; fill later */
{ .mmi
- and tmp = -(LINE_SIZE), cnt // compute end of range
- mov ptr9 = ptr1 // used for prefetching
- and cnt = (LINE_SIZE-1), cnt // remainder
+ and tmp = -(LINE_SIZE), cnt /* compute end of range */
+ mov ptr9 = ptr1 /* used for prefetching */
+ and cnt = (LINE_SIZE-1), cnt /* remainder */
} { .mmi
- mov loopcnt = PREF_AHEAD-1 // default prefetch loop
- cmp.gt p_scr, p0 = PREF_AHEAD, linecnt // check against actual value
+ mov loopcnt = PREF_AHEAD-1 /* default prefetch loop */
+ cmp.gt p_scr, p0 = PREF_AHEAD, linecnt /* check against actual value */
;; }
{ .mmi
(p_scr) add loopcnt = -1, linecnt
- add ptr2 = 16, ptr1 // start of stores (beyond prefetch stores)
- add ptr1 = tmp, ptr1 // first address beyond total range
+ add ptr2 = 16, ptr1 /* start of stores (beyond prefetch stores) */
+ add ptr1 = tmp, ptr1 /* first address beyond total range */
;; }
{ .mmi
- add tmp = -1, linecnt // next loop count
+ add tmp = -1, linecnt /* next loop count */
movi0 ar.lc = loopcnt
;; }
.pref_l1b:
{ .mib
- stf.spill [ptr9] = f0, 128 // Do stores one cache line apart
+ stf.spill [ptr9] = f0, 128 /* Do stores one cache line apart */
nop.i 0
br.cloop.dptk.few .pref_l1b
;; }
{ .mmi
- add ptr0 = 16, ptr2 // Two stores in parallel
+ add ptr0 = 16, ptr2 /* Two stores in parallel */
movi0 ar.lc = tmp
;; }
.l1bx:
@@ -190,7 +190,7 @@ ENTRY(bzero)
{ .mmi
stf.spill [ptr2] = f0, 32
stf.spill [ptr0] = f0, 64
- cmp.lt p_scr, p0 = ptr9, ptr1 // do we need more prefetching?
+ cmp.lt p_scr, p0 = ptr9, ptr1 /* do we need more prefetching? */
;; }
{ .mmb
stf.spill [ptr2] = f0, 32
@@ -198,14 +198,14 @@ ENTRY(bzero)
br.cloop.dptk.few .l1bx
;; }
{ .mib
- cmp.gt p_scr, p0 = 8, cnt // just a few bytes left ?
+ cmp.gt p_scr, p0 = 8, cnt /* just a few bytes left ? */
(p_scr) br.cond.dpnt.many .move_bytes_from_alignment
;; }
.fraction_of_line:
{ .mib
add ptr2 = 16, ptr1
- shr.u loopcnt = cnt, 5 // loopcnt = cnt / 32
+ shr.u loopcnt = cnt, 5 /* loopcnt = cnt / 32 */
;; }
{ .mib
cmp.eq p_scr, p0 = loopcnt, r0
@@ -213,11 +213,11 @@ ENTRY(bzero)
(p_scr) br.cond.dpnt.many .store_words
;; }
{ .mib
- and cnt = 0x1f, cnt // compute the remaining cnt
+ and cnt = 0x1f, cnt /* compute the remaining cnt */
movi0 ar.lc = loopcnt
;; }
.align 32
-.l2: // -----------------------------// L2A: store 32B in 2 cycles
+.l2: /* ----------------------------- L2A: store 32B in 2 cycles */
{ .mmb
store [ptr1] = myval, 8
store [ptr2] = myval, 8
@@ -228,38 +228,38 @@ ENTRY(bzero)
;; }
.store_words:
{ .mib
- cmp.gt p_scr, p0 = 8, cnt // just a few bytes left ?
-(p_scr) br.cond.dpnt.many .move_bytes_from_alignment // Branch
+ cmp.gt p_scr, p0 = 8, cnt /* just a few bytes left ? */
+(p_scr) br.cond.dpnt.many .move_bytes_from_alignment /* Branch */
;; }
{ .mmi
- store [ptr1] = myval, 8 // store
- cmp.le p_y, p_n = 16, cnt //
- add cnt = -8, cnt // subtract
+ store [ptr1] = myval, 8 /* store */
+ cmp.le p_y, p_n = 16, cnt /* */
+ add cnt = -8, cnt /* subtract */
;; }
{ .mmi
-(p_y) store [ptr1] = myval, 8 // store
+(p_y) store [ptr1] = myval, 8 /* store */
(p_y) cmp.le.unc p_yy, p_nn = 16, cnt
-(p_y) add cnt = -8, cnt // subtract
+(p_y) add cnt = -8, cnt /* subtract */
;; }
-{ .mmi // store
+{ .mmi /* store */
(p_yy) store [ptr1] = myval, 8
-(p_yy) add cnt = -8, cnt // subtract
+(p_yy) add cnt = -8, cnt /* subtract */
;; }
.move_bytes_from_alignment:
{ .mib
cmp.eq p_scr, p0 = cnt, r0
- tbit.nz.unc p_y, p0 = cnt, 2 // should we terminate with a st4 ?
+ tbit.nz.unc p_y, p0 = cnt, 2 /* should we terminate with a st4 ? */
(p_scr) br.cond.dpnt.few .restore_and_exit
;; }
{ .mib
(p_y) st4 [ptr1] = r0,4
- tbit.nz.unc p_yy, p0 = cnt, 1 // should we terminate with a st2 ?
+ tbit.nz.unc p_yy, p0 = cnt, 1 /* should we terminate with a st2 ? */
;; }
{ .mib
(p_yy) st2 [ptr1] = r0,2
- tbit.nz.unc p_y, p0 = cnt, 0 // should we terminate with a st1 ?
+ tbit.nz.unc p_y, p0 = cnt, 0 /* should we terminate with a st1 ? */
;; }
{ .mib
@@ -281,38 +281,38 @@ ENTRY(bzero)
(p_n) add ptr2 = 2, ptr1
} { .mmi
(p_y) add ptr2 = 3, ptr1
-(p_y) st1 [ptr1] = r0, 1 // fill 1 (odd-aligned) byte
-(p_y) add cnt = -1, cnt // [15, 14 (or less) left]
+(p_y) st1 [ptr1] = r0, 1 /* fill 1 (odd-aligned) byte */
+(p_y) add cnt = -1, cnt /* [15, 14 (or less) left] */
;; }
{ .mmi
(p_yy) cmp.le.unc p_y, p0 = 8, cnt
- add ptr3 = ptr1, cnt // prepare last store
+ add ptr3 = ptr1, cnt /* prepare last store */
movi0 ar.lc = save_lc
} { .mmi
-(p_yy) st2 [ptr1] = r0, 4 // fill 2 (aligned) bytes
-(p_yy) st2 [ptr2] = r0, 4 // fill 2 (aligned) bytes
-(p_yy) add cnt = -4, cnt // [11, 10 (o less) left]
+(p_yy) st2 [ptr1] = r0, 4 /* fill 2 (aligned) bytes */
+(p_yy) st2 [ptr2] = r0, 4 /* fill 2 (aligned) bytes */
+(p_yy) add cnt = -4, cnt /* [11, 10 (o less) left] */
;; }
{ .mmi
(p_y) cmp.le.unc p_yy, p0 = 8, cnt
- add ptr3 = -1, ptr3 // last store
- tbit.nz p_scr, p0 = cnt, 1 // will there be a st2 at the end ?
+ add ptr3 = -1, ptr3 /* last store */
+ tbit.nz p_scr, p0 = cnt, 1 /* will there be a st2 at the end ? */
} { .mmi
-(p_y) st2 [ptr1] = r0, 4 // fill 2 (aligned) bytes
-(p_y) st2 [ptr2] = r0, 4 // fill 2 (aligned) bytes
-(p_y) add cnt = -4, cnt // [7, 6 (or less) left]
+(p_y) st2 [ptr1] = r0, 4 /* fill 2 (aligned) bytes */
+(p_y) st2 [ptr2] = r0, 4 /* fill 2 (aligned) bytes */
+(p_y) add cnt = -4, cnt /* [7, 6 (or less) left] */
;; }
{ .mmi
-(p_yy) st2 [ptr1] = r0, 4 // fill 2 (aligned) bytes
-(p_yy) st2 [ptr2] = r0, 4 // fill 2 (aligned) bytes
- // [3, 2 (or less) left]
- tbit.nz p_y, p0 = cnt, 0 // will there be a st1 at the end ?
+(p_yy) st2 [ptr1] = r0, 4 /* fill 2 (aligned) bytes */
+(p_yy) st2 [ptr2] = r0, 4 /* fill 2 (aligned) bytes */
+ /* [3, 2 (or less) left] */
+ tbit.nz p_y, p0 = cnt, 0 /* will there be a st1 at the end ? */
} { .mmi
(p_yy) add cnt = -4, cnt
;; }
{ .mmb
-(p_scr) st2 [ptr1] = r0 // fill 2 (aligned) bytes
-(p_y) st1 [ptr3] = r0 // fill last byte (using ptr3)
+(p_scr) st2 [ptr1] = r0 /* fill 2 (aligned) bytes */
+(p_y) st1 [ptr3] = r0 /* fill last byte (using ptr3) */
br.ret.sptk.many rp
;; }
END(bzero)
diff --git a/libc/string/ia64/memccpy.S b/libc/string/ia64/memccpy.S
index 1afba3637..259d680bc 100644
--- a/libc/string/ia64/memccpy.S
+++ b/libc/string/ia64/memccpy.S
@@ -23,7 +23,7 @@
Inputs:
in0: dest
in1: src
- in2: char
+ in2: char
in3: byte count
This implementation assumes little endian mode (UM.be = 0).
@@ -69,75 +69,75 @@ ENTRY(memccpy)
.rotr r[MEMLAT + 7], tmp1[4], tmp2[4], val[4], tmp3[2], pos0[2]
.rotp p[MEMLAT + 6 + 1]
- mov ret0 = r0 // return NULL if no match
+ mov ret0 = r0 /* return NULL if no match */
.save pr, saved_pr
- mov saved_pr = pr // save the predicate registers
- mov dest = in0 // dest
+ mov saved_pr = pr /* save the predicate registers */
+ mov dest = in0 /* dest */
.save ar.lc, saved_lc
- mov saved_lc = ar.lc // save the loop counter
- mov saved_ec = ar.ec // save the loop counter
+ mov saved_lc = ar.lc /* save the loop counter */
+ mov saved_ec = ar.ec /* save the loop counter */
.body
- mov src = in1 // src
- extr.u char = in2, 0, 8 // char
- mov len = in3 // len
- sub tmp = r0, in0 // tmp = -dest
- cmp.ne p7, p0 = r0, r0 // clear p7
+ mov src = in1 /* src */
+ extr.u char = in2, 0, 8 /* char */
+ mov len = in3 /* len */
+ sub tmp = r0, in0 /* tmp = -dest */
+ cmp.ne p7, p0 = r0, r0 /* clear p7 */
;;
- and loopcnt = 7, tmp // loopcnt = -dest % 8
- cmp.ge p6, p0 = OP_T_THRES, len // is len <= OP_T_THRES
- mov ar.ec = 0 // ec not guaranteed zero on entry
-(p6) br.cond.spnt .cpyfew // copy byte by byte
+ and loopcnt = 7, tmp /* loopcnt = -dest % 8 */
+ cmp.ge p6, p0 = OP_T_THRES, len /* is len <= OP_T_THRES */
+ mov ar.ec = 0 /* ec not guaranteed zero on entry */
+(p6) br.cond.spnt .cpyfew /* copy byte by byte */
;;
cmp.eq p6, p0 = loopcnt, r0
mux1 charx8 = char, @brcst
(p6) br.cond.sptk .dest_aligned
- sub len = len, loopcnt // len -= -dest % 8
- adds loopcnt = -1, loopcnt // --loopcnt
+ sub len = len, loopcnt /* len -= -dest % 8 */
+ adds loopcnt = -1, loopcnt /* --loopcnt */
;;
mov ar.lc = loopcnt
-.l1: // copy -dest % 8 bytes
- ld1 value = [src], 1 // value = *src++
+.l1: /* copy -dest % 8 bytes */
+ ld1 value = [src], 1 /* value = *src++ */
;;
- st1 [dest] = value, 1 // *dest++ = value
+ st1 [dest] = value, 1 /* *dest++ = value */
cmp.eq p6, p0 = value, char
(p6) br.cond.spnt .foundit
br.cloop.dptk .l1
.dest_aligned:
- and sh1 = 7, src // sh1 = src % 8
- and tmp = -8, len // tmp = len & -OPSIZ
- and asrc = -8, src // asrc = src & -OPSIZ -- align src
- shr.u loopcnt = len, 3 // loopcnt = len / 8
- and len = 7, len ;; // len = len % 8
- shl sh1 = sh1, 3 // sh1 = 8 * (src % 8)
- adds loopcnt = -1, loopcnt // --loopcnt
- mov pr.rot = 1 << 16 ;; // set rotating predicates
- sub sh2 = 64, sh1 // sh2 = 64 - sh1
- mov ar.lc = loopcnt // set LC
- cmp.eq p6, p0 = sh1, r0 // is the src aligned?
+ and sh1 = 7, src /* sh1 = src % 8 */
+ and tmp = -8, len /* tmp = len & -OPSIZ */
+ and asrc = -8, src /* asrc = src & -OPSIZ -- align src */
+ shr.u loopcnt = len, 3 /* loopcnt = len / 8 */
+ and len = 7, len ;; /* len = len % 8 */
+ shl sh1 = sh1, 3 /* sh1 = 8 * (src % 8) */
+ adds loopcnt = -1, loopcnt /* --loopcnt */
+ mov pr.rot = 1 << 16 ;; /* set rotating predicates */
+ sub sh2 = 64, sh1 /* sh2 = 64 - sh1 */
+ mov ar.lc = loopcnt /* set LC */
+ cmp.eq p6, p0 = sh1, r0 /* is the src aligned? */
(p6) br.cond.sptk .src_aligned ;;
- add src = src, tmp // src += len & -OPSIZ
- mov ar.ec = MEMLAT + 6 + 1 // six more passes needed
- ld8 r[1] = [asrc], 8 // r[1] = w0
- cmp.ne p6, p0 = r0, r0 ;; // clear p6
+ add src = src, tmp /* src += len & -OPSIZ */
+ mov ar.ec = MEMLAT + 6 + 1 /* six more passes needed */
+ ld8 r[1] = [asrc], 8 /* r[1] = w0 */
+ cmp.ne p6, p0 = r0, r0 ;; /* clear p6 */
ALIGN(32)
.l2:
-(p[0]) ld8.s r[0] = [asrc], 8 // r[0] = w1
-(p[MEMLAT]) shr.u tmp1[0] = r[1 + MEMLAT], sh1 // tmp1 = w0 >> sh1
-(p[MEMLAT]) shl tmp2[0] = r[0 + MEMLAT], sh2 // tmp2 = w1 << sh2
+(p[0]) ld8.s r[0] = [asrc], 8 /* r[0] = w1 */
+(p[MEMLAT]) shr.u tmp1[0] = r[1 + MEMLAT], sh1 /* tmp1 = w0 >> sh1 */
+(p[MEMLAT]) shl tmp2[0] = r[0 + MEMLAT], sh2 /* tmp2 = w1 << sh2 */
(p[MEMLAT+4]) xor tmp3[0] = val[1], charx8
(p[MEMLAT+5]) czx1.r pos0[0] = tmp3[1]
-(p[MEMLAT+6]) chk.s r[6 + MEMLAT], .recovery1 // our data isn't
- // valid - rollback!
+(p[MEMLAT+6]) chk.s r[6 + MEMLAT], .recovery1 /* our data isn't */
+ /* valid - rollback! */
(p[MEMLAT+6]) cmp.ne p6, p0 = 8, pos0[1]
(p6) br.cond.spnt .gotit
-(p[MEMLAT+6]) st8 [dest] = val[3], 8 // store val to dest
-(p[MEMLAT+3]) or val[0] = tmp1[3], tmp2[3] // val = tmp1 | tmp2
+(p[MEMLAT+6]) st8 [dest] = val[3], 8 /* store val to dest */
+(p[MEMLAT+3]) or val[0] = tmp1[3], tmp2[3] /* val = tmp1 | tmp2 */
br.ctop.sptk .l2
br.cond.sptk .cpyfew
.src_aligned:
- cmp.ne p6, p0 = r0, r0 // clear p6
- mov ar.ec = MEMLAT + 2 + 1 ;; // set EC
+ cmp.ne p6, p0 = r0, r0 /* clear p6 */
+ mov ar.ec = MEMLAT + 2 + 1 ;; /* set EC */
.l3:
(p[0]) ld8.s r[0] = [src], 8
(p[MEMLAT]) xor tmp3[0] = r[MEMLAT], charx8
@@ -149,8 +149,8 @@ ENTRY(memccpy)
(p[MEMLAT+2]) st8 [dest] = r[MEMLAT+2], 8
br.ctop.dptk .l3
.cpyfew:
- cmp.eq p6, p0 = len, r0 // is len == 0 ?
- adds len = -1, len // --len;
+ cmp.eq p6, p0 = len, r0 /* is len == 0 ? */
+ adds len = -1, len /* --len; */
(p6) br.cond.spnt .restore_and_exit ;;
mov ar.lc = len
.l4:
@@ -163,14 +163,14 @@ ENTRY(memccpy)
.foundit:
(p6) mov ret0 = dest
.restore_and_exit:
- mov pr = saved_pr, -1 // restore the predicate registers
- mov ar.lc = saved_lc // restore the loop counter
- mov ar.ec = saved_ec ;; // restore the epilog counter
+ mov pr = saved_pr, -1 /* restore the predicate registers */
+ mov ar.lc = saved_lc /* restore the loop counter */
+ mov ar.ec = saved_ec ;; /* restore the epilog counter */
br.ret.sptk.many b0
.gotit:
.pred.rel "mutex" p6, p7
-(p6) mov value = val[3] // if coming from l2
-(p7) mov value = r[MEMLAT+2] // if coming from l3
+(p6) mov value = val[3] /* if coming from l2 */
+(p7) mov value = r[MEMLAT+2] /* if coming from l3 */
mov ar.lc = pos0[1] ;;
.l5:
extr.u tmp = value, 0, 8 ;;
diff --git a/libc/string/ia64/memchr.S b/libc/string/ia64/memchr.S
index 2bf078fe6..0246b5997 100644
--- a/libc/string/ia64/memchr.S
+++ b/libc/string/ia64/memchr.S
@@ -62,18 +62,18 @@ ENTRY(__memchr)
.rotr value[MEMLAT+1], addr[MEMLAT+3], aux[2], poschr[2]
.rotp p[MEMLAT+3]
.save ar.lc, saved_lc
- mov saved_lc = ar.lc // save the loop counter
+ mov saved_lc = ar.lc /* save the loop counter */
.save pr, saved_pr
- mov saved_pr = pr // save the predicates
+ mov saved_pr = pr /* save the predicates */
.body
mov ret0 = str
- and tmp = 7, str // tmp = str % 8
- cmp.ne p7, p0 = r0, r0 // clear p7
- extr.u chr = in1, 0, 8 // chr = (unsigned char) in1
+ and tmp = 7, str /* tmp = str % 8 */
+ cmp.ne p7, p0 = r0, r0 /* clear p7 */
+ extr.u chr = in1, 0, 8 /* chr = (unsigned char) in1 */
mov len = in2
- cmp.gtu p6, p0 = 16, in2 // use a simple loop for short
-(p6) br.cond.spnt .srchfew ;; // searches
- sub loopcnt = 8, tmp // loopcnt = 8 - tmp
+ cmp.gtu p6, p0 = 16, in2 /* use a simple loop for short */
+(p6) br.cond.spnt .srchfew ;; /* searches */
+ sub loopcnt = 8, tmp /* loopcnt = 8 - tmp */
cmp.eq p6, p0 = tmp, r0
(p6) br.cond.sptk .str_aligned;;
sub len = len, loopcnt
@@ -86,12 +86,12 @@ ENTRY(__memchr)
(p6) br.cond.spnt .foundit
br.cloop.sptk .l1 ;;
.str_aligned:
- cmp.ne p6, p0 = r0, r0 // clear p6
- shr.u loopcnt = len, 3 // loopcnt = len / 8
- and len = 7, len ;; // remaining len = len & 7
+ cmp.ne p6, p0 = r0, r0 /* clear p6 */
+ shr.u loopcnt = len, 3 /* loopcnt = len / 8 */
+ and len = 7, len ;; /* remaining len = len & 7 */
adds loopcnt = -1, loopcnt
mov ar.ec = MEMLAT + 3
- mux1 chrx8 = chr, @brcst ;; // get a word full of chr
+ mux1 chrx8 = chr, @brcst ;; /* get a word full of chr */
mov ar.lc = loopcnt
mov pr.rot = 1 << 16 ;;
.l2:
@@ -114,12 +114,12 @@ ENTRY(__memchr)
(p6) br.cond.dpnt .foundit
br.cloop.sptk .l3 ;;
.notfound:
- cmp.ne p6, p0 = r0, r0 // clear p6 (p7 was already 0 when we got here)
- mov ret0 = r0 ;; // return NULL
+ cmp.ne p6, p0 = r0, r0 /* clear p6 (p7 was already 0 when we got here) */
+ mov ret0 = r0 ;; /* return NULL */
.foundit:
.pred.rel "mutex" p6, p7
-(p6) adds ret0 = -1, ret0 // if we got here from l1 or l3
-(p7) add ret0 = addr[MEMLAT+2], poschr[1] // if we got here from l2
+(p6) adds ret0 = -1, ret0 /* if we got here from l1 or l3 */
+(p7) add ret0 = addr[MEMLAT+2], poschr[1] /* if we got here from l2 */
mov pr = saved_pr, -1
mov ar.lc = saved_lc
br.ret.sptk.many b0
diff --git a/libc/string/ia64/memcmp.S b/libc/string/ia64/memcmp.S
index 8b0c096ce..adb1a20de 100644
--- a/libc/string/ia64/memcmp.S
+++ b/libc/string/ia64/memcmp.S
@@ -28,7 +28,7 @@
In this form, it assumes little endian mode. For big endian mode, the
the two shifts in .l2 must be inverted:
- shl tmp1[0] = r[1 + MEMLAT], sh1 // tmp1 = w0 << sh1
+ shl tmp1[0] = r[1 + MEMLAT], sh1 // tmp1 = w0 << sh1
shr.u tmp2[0] = r[0 + MEMLAT], sh2 // tmp2 = w1 >> sh2
and all the mux1 instructions should be replaced by plain mov's. */
@@ -36,8 +36,8 @@
#include "sysdep.h"
#undef ret
-#define OP_T_THRES 16
-#define OPSIZ 8
+#define OP_T_THRES 16
+#define OPSIZ 8
#define MEMLAT 2
#define start r15
@@ -56,85 +56,85 @@
ENTRY(memcmp)
.prologue
- alloc r2 = ar.pfs, 3, 37, 0, 40
+ alloc r2 = ar.pfs, 3, 37, 0, 40
.rotr r[MEMLAT + 2], q[MEMLAT + 5], tmp1[4], tmp2[4], val[2]
.rotp p[MEMLAT + 4 + 1]
- mov ret0 = r0 // by default return value = 0
+ mov ret0 = r0 /* by default return value = 0 */
.save pr, saved_pr
- mov saved_pr = pr // save the predicate registers
+ mov saved_pr = pr /* save the predicate registers */
.save ar.lc, saved_lc
- mov saved_lc = ar.lc // save the loop counter
+ mov saved_lc = ar.lc /* save the loop counter */
.body
- mov dest = in0 // dest
- mov src = in1 // src
- mov len = in2 // len
- sub tmp = r0, in0 // tmp = -dest
+ mov dest = in0 /* dest */
+ mov src = in1 /* src */
+ mov len = in2 /* len */
+ sub tmp = r0, in0 /* tmp = -dest */
;;
- and loopcnt = 7, tmp // loopcnt = -dest % 8
- cmp.ge p6, p0 = OP_T_THRES, len // is len <= OP_T_THRES
-(p6) br.cond.spnt .cmpfew // compare byte by byte
+ and loopcnt = 7, tmp /* loopcnt = -dest % 8 */
+ cmp.ge p6, p0 = OP_T_THRES, len /* is len <= OP_T_THRES */
+(p6) br.cond.spnt .cmpfew /* compare byte by byte */
;;
cmp.eq p6, p0 = loopcnt, r0
(p6) br.cond.sptk .dest_aligned
- sub len = len, loopcnt // len -= -dest % 8
- adds loopcnt = -1, loopcnt // --loopcnt
+ sub len = len, loopcnt /* len -= -dest % 8 */
+ adds loopcnt = -1, loopcnt /* --loopcnt */
;;
mov ar.lc = loopcnt
-.l1: // copy -dest % 8 bytes
- ld1 value1 = [src], 1 // value = *src++
+.l1: /* copy -dest % 8 bytes */
+ ld1 value1 = [src], 1 /* value = *src++ */
ld1 value2 = [dest], 1
;;
cmp.ne p6, p0 = value1, value2
(p6) br.cond.spnt .done
br.cloop.dptk .l1
.dest_aligned:
- and sh1 = 7, src // sh1 = src % 8
- and tmp = -8, len // tmp = len & -OPSIZ
- and asrc = -8, src // asrc = src & -OPSIZ -- align src
- shr.u loopcnt = len, 3 // loopcnt = len / 8
- and len = 7, len ;; // len = len % 8
- shl sh1 = sh1, 3 // sh1 = 8 * (src % 8)
- adds loopcnt = -1, loopcnt // --loopcnt
- mov pr.rot = 1 << 16 ;; // set rotating predicates
- sub sh2 = 64, sh1 // sh2 = 64 - sh1
- mov ar.lc = loopcnt // set LC
- cmp.eq p6, p0 = sh1, r0 // is the src aligned?
+ and sh1 = 7, src /* sh1 = src % 8 */
+ and tmp = -8, len /* tmp = len & -OPSIZ */
+ and asrc = -8, src /* asrc = src & -OPSIZ -- align src */
+ shr.u loopcnt = len, 3 /* loopcnt = len / 8 */
+ and len = 7, len ;; /* len = len % 8 */
+ shl sh1 = sh1, 3 /* sh1 = 8 * (src % 8) */
+ adds loopcnt = -1, loopcnt /* --loopcnt */
+ mov pr.rot = 1 << 16 ;; /* set rotating predicates */
+ sub sh2 = 64, sh1 /* sh2 = 64 - sh1 */
+ mov ar.lc = loopcnt /* set LC */
+ cmp.eq p6, p0 = sh1, r0 /* is the src aligned? */
(p6) br.cond.sptk .src_aligned
- add src = src, tmp // src += len & -OPSIZ
- mov ar.ec = MEMLAT + 4 + 1 // four more passes needed
- ld8 r[1] = [asrc], 8 ;; // r[1] = w0
+ add src = src, tmp /* src += len & -OPSIZ */
+ mov ar.ec = MEMLAT + 4 + 1 /* four more passes needed */
+ ld8 r[1] = [asrc], 8 ;; /* r[1] = w0 */
.align 32
-// We enter this loop with p6 cleared by the above comparison
+/* We enter this loop with p6 cleared by the above comparison */
.l2:
-(p[0]) ld8 r[0] = [asrc], 8 // r[0] = w1
+(p[0]) ld8 r[0] = [asrc], 8 /* r[0] = w1 */
(p[0]) ld8 q[0] = [dest], 8
-(p[MEMLAT]) shr.u tmp1[0] = r[1 + MEMLAT], sh1 // tmp1 = w0 >> sh1
-(p[MEMLAT]) shl tmp2[0] = r[0 + MEMLAT], sh2 // tmp2 = w1 << sh2
+(p[MEMLAT]) shr.u tmp1[0] = r[1 + MEMLAT], sh1 /* tmp1 = w0 >> sh1 */
+(p[MEMLAT]) shl tmp2[0] = r[0 + MEMLAT], sh2 /* tmp2 = w1 << sh2 */
(p[MEMLAT+4]) cmp.ne p6, p0 = q[MEMLAT + 4], val[1]
-(p[MEMLAT+3]) or val[0] = tmp1[3], tmp2[3] // val = tmp1 | tmp2
+(p[MEMLAT+3]) or val[0] = tmp1[3], tmp2[3] /* val = tmp1 | tmp2 */
(p6) br.cond.spnt .l2exit
br.ctop.sptk .l2
br.cond.sptk .cmpfew
.l3exit:
mux1 value1 = r[MEMLAT], @rev
mux1 value2 = q[MEMLAT], @rev
- cmp.ne p6, p0 = r0, r0 ;; // clear p6
+ cmp.ne p6, p0 = r0, r0 ;; /* clear p6 */
.l2exit:
(p6) mux1 value1 = val[1], @rev
(p6) mux1 value2 = q[MEMLAT + 4], @rev ;;
cmp.ltu p6, p7 = value2, value1 ;;
(p6) mov ret0 = -1
(p7) mov ret0 = 1
- mov pr = saved_pr, -1 // restore the predicate registers
- mov ar.lc = saved_lc // restore the loop counter
+ mov pr = saved_pr, -1 /* restore the predicate registers */
+ mov ar.lc = saved_lc /* restore the loop counter */
br.ret.sptk.many b0
.src_aligned:
- cmp.ne p6, p0 = r0, r0 // clear p6
- mov ar.ec = MEMLAT + 1 ;; // set EC
+ cmp.ne p6, p0 = r0, r0 /* clear p6 */
+ mov ar.ec = MEMLAT + 1 ;; /* set EC */
.l3:
(p[0]) ld8 r[0] = [src], 8
(p[0]) ld8 q[0] = [dest], 8
@@ -142,8 +142,8 @@ ENTRY(memcmp)
(p6) br.cond.spnt .l3exit
br.ctop.dptk .l3 ;;
.cmpfew:
- cmp.eq p6, p0 = len, r0 // is len == 0 ?
- adds len = -1, len // --len;
+ cmp.eq p6, p0 = len, r0 /* is len == 0 ? */
+ adds len = -1, len /* --len; */
(p6) br.cond.spnt .restore_and_exit ;;
mov ar.lc = len
.l4:
@@ -154,10 +154,10 @@ ENTRY(memcmp)
(p6) br.cond.spnt .done
br.cloop.dptk .l4 ;;
.done:
-(p6) sub ret0 = value2, value1 // don't execute it if falling thru
+(p6) sub ret0 = value2, value1 /* don't execute it if falling thru */
.restore_and_exit:
- mov pr = saved_pr, -1 // restore the predicate registers
- mov ar.lc = saved_lc // restore the loop counter
+ mov pr = saved_pr, -1 /* restore the predicate registers */
+ mov ar.lc = saved_lc /* restore the loop counter */
br.ret.sptk.many b0
END(memcmp)
libc_hidden_def (memcmp)
diff --git a/libc/string/ia64/memcpy.S b/libc/string/ia64/memcpy.S
index 810eb0c0e..6c48a72d9 100644
--- a/libc/string/ia64/memcpy.S
+++ b/libc/string/ia64/memcpy.S
@@ -42,8 +42,8 @@
#define LFETCH_DIST 500
-#define ALIGN_UNROLL_no 4 // no. of elements
-#define ALIGN_UNROLL_sh 2 // (shift amount)
+#define ALIGN_UNROLL_no 4 /* no. of elements */
+#define ALIGN_UNROLL_sh 2 /* (shift amount) */
#define MEMLAT 8
#define Nrot ((4*(MEMLAT+2) + 7) & ~7)
@@ -168,76 +168,76 @@ ENTRY(memcpy)
.rotr r[MEMLAT+1], s[MEMLAT+2], q[MEMLAT+1], t[MEMLAT+1]
.rotp p[MEMLAT+2]
.rotf fr[MEMLAT+1], fq[MEMLAT+1], fs[MEMLAT+1], ft[MEMLAT+1]
- mov ret0 = in0 // return tmp2 = dest
+ mov ret0 = in0 /* return tmp2 = dest */
.save pr, saved_pr
- movi0 saved_pr = pr // save the predicate registers
+ movi0 saved_pr = pr /* save the predicate registers */
} { .mmi
- and tmp4 = 7, in0 // check if destination is aligned
- mov dest = in0 // dest
- mov src = in1 // src
+ and tmp4 = 7, in0 /* check if destination is aligned */
+ mov dest = in0 /* dest */
+ mov src = in1 /* src */
;; }
{ .mii
- cmp.eq p_scr, p0 = in2, r0 // if (len == 0)
+ cmp.eq p_scr, p0 = in2, r0 /* if (len == 0) */
.save ar.lc, saved_lc
- movi0 saved_lc = ar.lc // save the loop counter
+ movi0 saved_lc = ar.lc /* save the loop counter */
.body
- cmp.ge p_few, p0 = OP_T_THRES, in2 // is len <= OP_T_THRESH
+ cmp.ge p_few, p0 = OP_T_THRES, in2 /* is len <= OP_T_THRESH */
} { .mbb
- mov len = in2 // len
-(p_scr) br.cond.dpnt.few .restore_and_exit // Branch no. 1: return dest
-(p_few) br.cond.dpnt.many .copy_bytes // Branch no. 2: copy byte by byte
+ mov len = in2 /* len */
+(p_scr) br.cond.dpnt.few .restore_and_exit /* Branch no. 1: return dest */
+(p_few) br.cond.dpnt.many .copy_bytes /* Branch no. 2: copy byte by byte */
;; }
{ .mmi
#if defined(USE_LFETCH)
- lfetch.nt1 [dest] //
- lfetch.nt1 [src] //
+ lfetch.nt1 [dest] /* */
+ lfetch.nt1 [src] /* */
#endif
- shr.u elemcnt = len, 3 // elemcnt = len / 8
+ shr.u elemcnt = len, 3 /* elemcnt = len / 8 */
} { .mib
- cmp.eq p_scr, p0 = tmp4, r0 // is destination aligned?
- sub loopcnt = 7, tmp4 //
+ cmp.eq p_scr, p0 = tmp4, r0 /* is destination aligned? */
+ sub loopcnt = 7, tmp4 /* */
(p_scr) br.cond.dptk.many .dest_aligned
;; }
{ .mmi
- ld1 tmp2 = [src], 1 //
- sub len = len, loopcnt, 1 // reduce len
- movi0 ar.lc = loopcnt //
+ ld1 tmp2 = [src], 1 /* */
+ sub len = len, loopcnt, 1 /* reduce len */
+ movi0 ar.lc = loopcnt /* */
} { .mib
- cmp.ne p_scr, p0 = 0, loopcnt // avoid loading beyond end-point
+ cmp.ne p_scr, p0 = 0, loopcnt /* avoid loading beyond end-point */
;; }
-.l0: // ---------------------------- // L0: Align src on 8-byte boundary
+.l0: /* ---------------------------- L0: Align src on 8-byte boundary */
{ .mmi
- st1 [dest] = tmp2, 1 //
-(p_scr) ld1 tmp2 = [src], 1 //
+ st1 [dest] = tmp2, 1 /* */
+(p_scr) ld1 tmp2 = [src], 1 /* */
} { .mib
- cmp.lt p_scr, p0 = 1, loopcnt // avoid load beyond end-point
+ cmp.lt p_scr, p0 = 1, loopcnt /* avoid load beyond end-point */
add loopcnt = -1, loopcnt
- br.cloop.dptk.few .l0 //
+ br.cloop.dptk.few .l0 /* */
;; }
.dest_aligned:
{ .mmi
- and tmp4 = 7, src // ready for alignment check
- shr.u elemcnt = len, 3 // elemcnt = len / 8
+ and tmp4 = 7, src /* ready for alignment check */
+ shr.u elemcnt = len, 3 /* elemcnt = len / 8 */
;; }
{ .mib
- cmp.ne p_scr, p0 = tmp4, r0 // is source also aligned
- tbit.nz p_xtr, p_nxtr = src, 3 // prepare a separate move if src
-} { .mib // is not 16B aligned
- add ptr2 = LFETCH_DIST, dest // prefetch address
+ cmp.ne p_scr, p0 = tmp4, r0 /* is source also aligned */
+ tbit.nz p_xtr, p_nxtr = src, 3 /* prepare a separate move if src */
+} { .mib /* is not 16B aligned */
+ add ptr2 = LFETCH_DIST, dest /* prefetch address */
add ptr1 = LFETCH_DIST, src
(p_scr) br.cond.dptk.many .src_not_aligned
;; }
-// The optimal case, when dest, and src are aligned
+/* The optimal case, when dest, and src are aligned */
.both_aligned:
{ .mmi
.pred.rel "mutex",p_xtr,p_nxtr
-(p_xtr) cmp.gt p_scr, p0 = ALIGN_UNROLL_no+1, elemcnt // Need N + 1 to qualify
-(p_nxtr) cmp.gt p_scr, p0 = ALIGN_UNROLL_no, elemcnt // Need only N to qualify
- movi0 pr.rot = 1 << 16 // set rotating predicates
+(p_xtr) cmp.gt p_scr, p0 = ALIGN_UNROLL_no+1, elemcnt /* Need N + 1 to qualify */
+(p_nxtr) cmp.gt p_scr, p0 = ALIGN_UNROLL_no, elemcnt /* Need only N to qualify */
+ movi0 pr.rot = 1 << 16 /* set rotating predicates */
} { .mib
(p_scr) br.cond.dpnt.many .copy_full_words
;; }
@@ -245,21 +245,21 @@ ENTRY(memcpy)
{ .mmi
(p_xtr) load tempreg = [src], 8
(p_xtr) add elemcnt = -1, elemcnt
- movi0 ar.ec = MEMLAT + 1 // set the epilog counter
+ movi0 ar.ec = MEMLAT + 1 /* set the epilog counter */
;; }
{ .mmi
-(p_xtr) add len = -8, len //
- add asrc = 16, src // one bank apart (for USE_INT)
- shr.u loopcnt = elemcnt, ALIGN_UNROLL_sh // cater for unrolling
+(p_xtr) add len = -8, len /* */
+ add asrc = 16, src /* one bank apart (for USE_INT) */
+ shr.u loopcnt = elemcnt, ALIGN_UNROLL_sh /* cater for unrolling */
;;}
{ .mmi
add loopcnt = -1, loopcnt
-(p_xtr) store [dest] = tempreg, 8 // copy the "extra" word
+(p_xtr) store [dest] = tempreg, 8 /* copy the "extra" word */
nop.i 0
;; }
{ .mib
add adest = 16, dest
- movi0 ar.lc = loopcnt // set the loop counter
+ movi0 ar.lc = loopcnt /* set the loop counter */
;; }
#ifdef GAS_ALIGN_BREAKS_UNWIND_INFO
@@ -268,7 +268,7 @@ ENTRY(memcpy)
.align 32
#endif
#if defined(USE_FLP)
-.l1: // ------------------------------- // L1: Everything a multiple of 8
+.l1: /* ------------------------------- L1: Everything a multiple of 8 */
{ .mmi
#if defined(USE_LFETCH)
(p[0]) lfetch.nt1 [ptr2],32
@@ -290,7 +290,7 @@ ENTRY(memcpy)
br.ctop.dptk.many .l1
;; }
#elif defined(USE_INT)
-.l1: // ------------------------------- // L1: Everything a multiple of 8
+.l1: /* ------------------------------- L1: Everything a multiple of 8 */
{ .mmi
(p[0]) load the_r[0] = [src], 8
(p[0]) load the_q[0] = [asrc], 8
@@ -317,58 +317,58 @@ ENTRY(memcpy)
.copy_full_words:
{ .mib
- cmp.gt p_scr, p0 = 8, len //
- shr.u elemcnt = len, 3 //
+ cmp.gt p_scr, p0 = 8, len /* */
+ shr.u elemcnt = len, 3 /* */
(p_scr) br.cond.dpnt.many .copy_bytes
;; }
{ .mii
load tempreg = [src], 8
- add loopcnt = -1, elemcnt //
+ add loopcnt = -1, elemcnt /* */
;; }
{ .mii
- cmp.ne p_scr, p0 = 0, loopcnt //
- mov ar.lc = loopcnt //
+ cmp.ne p_scr, p0 = 0, loopcnt /* */
+ mov ar.lc = loopcnt /* */
;; }
-.l2: // ------------------------------- // L2: Max 4 words copied separately
+.l2: /* ------------------------------- L2: Max 4 words copied separately */
{ .mmi
store [dest] = tempreg, 8
-(p_scr) load tempreg = [src], 8 //
+(p_scr) load tempreg = [src], 8 /* */
add len = -8, len
} { .mib
- cmp.lt p_scr, p0 = 1, loopcnt // avoid load beyond end-point
+ cmp.lt p_scr, p0 = 1, loopcnt /* avoid load beyond end-point */
add loopcnt = -1, loopcnt
br.cloop.dptk.few .l2
;; }
.copy_bytes:
{ .mib
- cmp.eq p_scr, p0 = len, r0 // is len == 0 ?
- add loopcnt = -1, len // len--;
+ cmp.eq p_scr, p0 = len, r0 /* is len == 0 ? */
+ add loopcnt = -1, len /* len--; */
(p_scr) br.cond.spnt .restore_and_exit
;; }
{ .mii
ld1 tmp2 = [src], 1
movi0 ar.lc = loopcnt
- cmp.ne p_scr, p0 = 0, loopcnt // avoid load beyond end-point
+ cmp.ne p_scr, p0 = 0, loopcnt /* avoid load beyond end-point */
;; }
-.l3: // ------------------------------- // L3: Final byte move
+.l3: /* ------------------------------- L3: Final byte move */
{ .mmi
st1 [dest] = tmp2, 1
(p_scr) ld1 tmp2 = [src], 1
} { .mib
- cmp.lt p_scr, p0 = 1, loopcnt // avoid load beyond end-point
+ cmp.lt p_scr, p0 = 1, loopcnt /* avoid load beyond end-point */
add loopcnt = -1, loopcnt
br.cloop.dptk.few .l3
;; }
.restore_and_exit:
{ .mmi
- movi0 pr = saved_pr, -1 // restore the predicate registers
+ movi0 pr = saved_pr, -1 /* restore the predicate registers */
;; }
{ .mib
- movi0 ar.lc = saved_lc // restore the loop counter
+ movi0 ar.lc = saved_lc /* restore the loop counter */
br.ret.sptk.many b0
;; }
@@ -376,41 +376,41 @@ ENTRY(memcpy)
.src_not_aligned:
{ .mmi
cmp.gt p_scr, p0 = 16, len
- and sh1 = 7, src // sh1 = src % 8
- shr.u loopcnt = len, 4 // element-cnt = len / 16
+ and sh1 = 7, src /* sh1 = src % 8 */
+ shr.u loopcnt = len, 4 /* element-cnt = len / 16 */
} { .mib
add tmp4 = @ltoff(.table), gp
add tmp3 = @ltoff(.loop56), gp
-(p_scr) br.cond.dpnt.many .copy_bytes // do byte by byte if too few
+(p_scr) br.cond.dpnt.many .copy_bytes /* do byte by byte if too few */
;; }
{ .mmi
- and asrc = -8, src // asrc = (-8) -- align src for loop
- add loopcnt = -1, loopcnt // loopcnt--
- shl sh1 = sh1, 3 // sh1 = 8 * (src % 8)
+ and asrc = -8, src /* asrc = (-8) -- align src for loop */
+ add loopcnt = -1, loopcnt /* loopcnt-- */
+ shl sh1 = sh1, 3 /* sh1 = 8 * (src % 8) */
} { .mmi
- ld8 ptable = [tmp4] // ptable = &table
- ld8 ploop56 = [tmp3] // ploop56 = &loop56
- and tmp2 = -16, len // tmp2 = len & -OPSIZ
+ ld8 ptable = [tmp4] /* ptable = &table */
+ ld8 ploop56 = [tmp3] /* ploop56 = &loop56 */
+ and tmp2 = -16, len /* tmp2 = len & -OPSIZ */
;; }
{ .mmi
- add tmp3 = ptable, sh1 // tmp3 = &table + sh1
- add src = src, tmp2 // src += len & (-16)
- movi0 ar.lc = loopcnt // set LC
+ add tmp3 = ptable, sh1 /* tmp3 = &table + sh1 */
+ add src = src, tmp2 /* src += len & (-16) */
+ movi0 ar.lc = loopcnt /* set LC */
;; }
{ .mmi
- ld8 tmp4 = [tmp3] // tmp4 = loop offset
- sub len = len, tmp2 // len -= len & (-16)
- movi0 ar.ec = MEMLAT + 2 // one more pass needed
+ ld8 tmp4 = [tmp3] /* tmp4 = loop offset */
+ sub len = len, tmp2 /* len -= len & (-16) */
+ movi0 ar.ec = MEMLAT + 2 /* one more pass needed */
;; }
{ .mmi
- ld8 s[1] = [asrc], 8 // preload
- sub loopaddr = ploop56,tmp4 // loopadd = &loop56 - loop offset
- movi0 pr.rot = 1 << 16 // set rotating predicates
+ ld8 s[1] = [asrc], 8 /* preload */
+ sub loopaddr = ploop56,tmp4 /* loopadd = &loop56 - loop offset */
+ movi0 pr.rot = 1 << 16 /* set rotating predicates */
;; }
{ .mib
nop.m 0
movi0 b6 = loopaddr
- br b6 // jump to the appropriate loop
+ br b6 /* jump to the appropriate loop */
;; }
LOOP(8)
@@ -426,7 +426,7 @@ libc_hidden_def (memcpy)
.rodata
.align 8
.table:
- data8 0 // dummy entry
+ data8 0 /* dummy entry */
data8 .loop56 - .loop8
data8 .loop56 - .loop16
data8 .loop56 - .loop24
diff --git a/libc/string/ia64/memmove.S b/libc/string/ia64/memmove.S
index 00342d8e0..beaada6fc 100644
--- a/libc/string/ia64/memmove.S
+++ b/libc/string/ia64/memmove.S
@@ -81,48 +81,48 @@ ENTRY(memmove)
alloc r2 = ar.pfs, 3, Nrot - 3, 0, Nrot
.rotr r[MEMLAT + 2], q[MEMLAT + 1]
.rotp p[MEMLAT + 2]
- mov ret0 = in0 // return value = dest
+ mov ret0 = in0 /* return value = dest */
.save pr, saved_pr
- mov saved_pr = pr // save the predicate registers
+ mov saved_pr = pr /* save the predicate registers */
.save ar.lc, saved_lc
- mov saved_lc = ar.lc // save the loop counter
+ mov saved_lc = ar.lc /* save the loop counter */
.body
- or tmp3 = in0, in1 ;; // tmp3 = dest | src
- or tmp3 = tmp3, in2 // tmp3 = dest | src | len
- mov dest = in0 // dest
- mov src = in1 // src
- mov len = in2 // len
- sub tmp2 = r0, in0 // tmp2 = -dest
- cmp.eq p6, p0 = in2, r0 // if (len == 0)
-(p6) br.cond.spnt .restore_and_exit;;// return dest;
- and tmp4 = 7, tmp3 // tmp4 = (dest | src | len) & 7
- cmp.le p6, p0 = dest, src // if dest <= src it's always safe
-(p6) br.cond.spnt .forward // to copy forward
+ or tmp3 = in0, in1 ;; /* tmp3 = dest | src */
+ or tmp3 = tmp3, in2 /* tmp3 = dest | src | len */
+ mov dest = in0 /* dest */
+ mov src = in1 /* src */
+ mov len = in2 /* len */
+ sub tmp2 = r0, in0 /* tmp2 = -dest */
+ cmp.eq p6, p0 = in2, r0 /* if (len == 0) */
+(p6) br.cond.spnt .restore_and_exit;;/* return dest; */
+ and tmp4 = 7, tmp3 /* tmp4 = (dest | src | len) & 7 */
+ cmp.le p6, p0 = dest, src /* if dest <= src it's always safe */
+(p6) br.cond.spnt .forward /* to copy forward */
add tmp3 = src, len;;
- cmp.lt p6, p0 = dest, tmp3 // if dest > src && dest < src + len
-(p6) br.cond.spnt .backward // we have to copy backward
+ cmp.lt p6, p0 = dest, tmp3 /* if dest > src && dest < src + len */
+(p6) br.cond.spnt .backward /* we have to copy backward */
.forward:
- shr.u loopcnt = len, 4 ;; // loopcnt = len / 16
- cmp.ne p6, p0 = tmp4, r0 // if ((dest | src | len) & 7 != 0)
-(p6) br.cond.sptk .next // goto next;
+ shr.u loopcnt = len, 4 ;; /* loopcnt = len / 16 */
+ cmp.ne p6, p0 = tmp4, r0 /* if ((dest | src | len) & 7 != 0) */
+(p6) br.cond.sptk .next /* goto next; */
-// The optimal case, when dest, src and len are all multiples of 8
+/* The optimal case, when dest, src and len are all multiples of 8 */
and tmp3 = 0xf, len
- mov pr.rot = 1 << 16 // set rotating predicates
- mov ar.ec = MEMLAT + 1 ;; // set the epilog counter
- cmp.ne p6, p0 = tmp3, r0 // do we have to copy an extra word?
- adds loopcnt = -1, loopcnt;; // --loopcnt
+ mov pr.rot = 1 << 16 /* set rotating predicates */
+ mov ar.ec = MEMLAT + 1 ;; /* set the epilog counter */
+ cmp.ne p6, p0 = tmp3, r0 /* do we have to copy an extra word? */
+ adds loopcnt = -1, loopcnt;; /* --loopcnt */
(p6) ld8 value = [src], 8;;
-(p6) st8 [dest] = value, 8 // copy the "odd" word
- mov ar.lc = loopcnt // set the loop counter
+(p6) st8 [dest] = value, 8 /* copy the "odd" word */
+ mov ar.lc = loopcnt /* set the loop counter */
cmp.eq p6, p0 = 8, len
-(p6) br.cond.spnt .restore_and_exit;;// the one-word special case
- adds adest = 8, dest // set adest one word ahead of dest
- adds asrc = 8, src ;; // set asrc one word ahead of src
- nop.b 0 // get the "golden" alignment for
- nop.b 0 // the next loop
+(p6) br.cond.spnt .restore_and_exit;;/* the one-word special case */
+ adds adest = 8, dest /* set adest one word ahead of dest */
+ adds asrc = 8, src ;; /* set asrc one word ahead of src */
+ nop.b 0 /* get the "golden" alignment for */
+ nop.b 0 /* the next loop */
.l0:
(p[0]) ld8 r[0] = [src], 16
(p[0]) ld8 q[0] = [asrc], 16
@@ -130,50 +130,50 @@ ENTRY(memmove)
(p[MEMLAT]) st8 [adest] = q[MEMLAT], 16
br.ctop.dptk .l0 ;;
- mov pr = saved_pr, -1 // restore the predicate registers
- mov ar.lc = saved_lc // restore the loop counter
+ mov pr = saved_pr, -1 /* restore the predicate registers */
+ mov ar.lc = saved_lc /* restore the loop counter */
br.ret.sptk.many b0
.next:
- cmp.ge p6, p0 = OP_T_THRES, len // is len <= OP_T_THRES
- and loopcnt = 7, tmp2 // loopcnt = -dest % 8
-(p6) br.cond.spnt .cpyfew // copy byte by byte
+ cmp.ge p6, p0 = OP_T_THRES, len /* is len <= OP_T_THRES */
+ and loopcnt = 7, tmp2 /* loopcnt = -dest % 8 */
+(p6) br.cond.spnt .cpyfew /* copy byte by byte */
;;
cmp.eq p6, p0 = loopcnt, r0
(p6) br.cond.sptk .dest_aligned
- sub len = len, loopcnt // len -= -dest % 8
- adds loopcnt = -1, loopcnt // --loopcnt
+ sub len = len, loopcnt /* len -= -dest % 8 */
+ adds loopcnt = -1, loopcnt /* --loopcnt */
;;
mov ar.lc = loopcnt
-.l1: // copy -dest % 8 bytes
- ld1 value = [src], 1 // value = *src++
+.l1: /* copy -dest % 8 bytes */
+ ld1 value = [src], 1 /* value = *src++ */
;;
- st1 [dest] = value, 1 // *dest++ = value
+ st1 [dest] = value, 1 /* *dest++ = value */
br.cloop.dptk .l1
.dest_aligned:
- and sh1 = 7, src // sh1 = src % 8
- and tmp2 = -8, len // tmp2 = len & -OPSIZ
- and asrc = -8, src // asrc = src & -OPSIZ -- align src
- shr.u loopcnt = len, 3 // loopcnt = len / 8
- and len = 7, len;; // len = len % 8
- adds loopcnt = -1, loopcnt // --loopcnt
+ and sh1 = 7, src /* sh1 = src % 8 */
+ and tmp2 = -8, len /* tmp2 = len & -OPSIZ */
+ and asrc = -8, src /* asrc = src & -OPSIZ -- align src */
+ shr.u loopcnt = len, 3 /* loopcnt = len / 8 */
+ and len = 7, len;; /* len = len % 8 */
+ adds loopcnt = -1, loopcnt /* --loopcnt */
addl tmp4 = @ltoff(.table), gp
addl tmp3 = @ltoff(.loop56), gp
- mov ar.ec = MEMLAT + 1 // set EC
- mov pr.rot = 1 << 16;; // set rotating predicates
- mov ar.lc = loopcnt // set LC
- cmp.eq p6, p0 = sh1, r0 // is the src aligned?
+ mov ar.ec = MEMLAT + 1 /* set EC */
+ mov pr.rot = 1 << 16;; /* set rotating predicates */
+ mov ar.lc = loopcnt /* set LC */
+ cmp.eq p6, p0 = sh1, r0 /* is the src aligned? */
(p6) br.cond.sptk .src_aligned
- add src = src, tmp2 // src += len & -OPSIZ
- shl sh1 = sh1, 3 // sh1 = 8 * (src % 8)
- ld8 ploop56 = [tmp3] // ploop56 = &loop56
- ld8 ptable = [tmp4];; // ptable = &table
- add tmp3 = ptable, sh1;; // tmp3 = &table + sh1
- mov ar.ec = MEMLAT + 1 + 1 // one more pass needed
- ld8 tmp4 = [tmp3];; // tmp4 = loop offset
- sub loopaddr = ploop56,tmp4 // loopadd = &loop56 - loop offset
- ld8 r[1] = [asrc], 8;; // w0
+ add src = src, tmp2 /* src += len & -OPSIZ */
+ shl sh1 = sh1, 3 /* sh1 = 8 * (src % 8) */
+ ld8 ploop56 = [tmp3] /* ploop56 = &loop56 */
+ ld8 ptable = [tmp4];; /* ptable = &table */
+ add tmp3 = ptable, sh1;; /* tmp3 = &table + sh1 */
+ mov ar.ec = MEMLAT + 1 + 1 /* one more pass needed */
+ ld8 tmp4 = [tmp3];; /* tmp4 = loop offset */
+ sub loopaddr = ploop56,tmp4 /* loopadd = &loop56 - loop offset */
+ ld8 r[1] = [asrc], 8;; /* w0 */
mov b6 = loopaddr;;
- br b6 // jump to the appropriate loop
+ br b6 /* jump to the appropriate loop */
LOOP(8)
LOOP(16)
@@ -189,8 +189,8 @@ ENTRY(memmove)
(p[MEMLAT]) st8 [dest] = r[MEMLAT], 8
br.ctop.dptk .l3
.cpyfew:
- cmp.eq p6, p0 = len, r0 // is len == 0 ?
- adds len = -1, len // --len;
+ cmp.eq p6, p0 = len, r0 /* is len == 0 ? */
+ adds len = -1, len /* --len; */
(p6) br.cond.spnt .restore_and_exit ;;
mov ar.lc = len
.l4:
@@ -199,36 +199,36 @@ ENTRY(memmove)
st1 [dest] = value, 1
br.cloop.dptk .l4 ;;
.restore_and_exit:
- mov pr = saved_pr, -1 // restore the predicate registers
- mov ar.lc = saved_lc // restore the loop counter
+ mov pr = saved_pr, -1 /* restore the predicate registers */
+ mov ar.lc = saved_lc /* restore the loop counter */
br.ret.sptk.many b0
-// In the case of a backward copy, optimise only the case when everything
-// is a multiple of 8, otherwise copy byte by byte. The backward copy is
-// used only when the blocks are overlapping and dest > src.
-
+/* In the case of a backward copy, optimise only the case when everything
+ is a multiple of 8, otherwise copy byte by byte. The backward copy is
+ used only when the blocks are overlapping and dest > src.
+*/
.backward:
- shr.u loopcnt = len, 3 // loopcnt = len / 8
- add src = src, len // src points one byte past the end
- add dest = dest, len ;; // dest points one byte past the end
- mov ar.ec = MEMLAT + 1 // set the epilog counter
- mov pr.rot = 1 << 16 // set rotating predicates
- adds loopcnt = -1, loopcnt // --loopcnt
- cmp.ne p6, p0 = tmp4, r0 // if ((dest | src | len) & 7 != 0)
-(p6) br.cond.sptk .bytecopy ;; // copy byte by byte backward
- adds src = -8, src // src points to the last word
- adds dest = -8, dest // dest points to the last word
- mov ar.lc = loopcnt;; // set the loop counter
+ shr.u loopcnt = len, 3 /* loopcnt = len / 8 */
+ add src = src, len /* src points one byte past the end */
+ add dest = dest, len ;; /* dest points one byte past the end */
+ mov ar.ec = MEMLAT + 1 /* set the epilog counter */
+ mov pr.rot = 1 << 16 /* set rotating predicates */
+ adds loopcnt = -1, loopcnt /* --loopcnt */
+ cmp.ne p6, p0 = tmp4, r0 /* if ((dest | src | len) & 7 != 0) */
+(p6) br.cond.sptk .bytecopy ;; /* copy byte by byte backward */
+ adds src = -8, src /* src points to the last word */
+ adds dest = -8, dest /* dest points to the last word */
+ mov ar.lc = loopcnt;; /* set the loop counter */
.l5:
(p[0]) ld8 r[0] = [src], -8
(p[MEMLAT]) st8 [dest] = r[MEMLAT], -8
br.ctop.dptk .l5
br.cond.sptk .restore_and_exit
.bytecopy:
- adds src = -1, src // src points to the last byte
- adds dest = -1, dest // dest points to the last byte
- adds loopcnt = -1, len;; // loopcnt = len - 1
- mov ar.lc = loopcnt;; // set the loop counter
+ adds src = -1, src /* src points to the last byte */
+ adds dest = -1, dest /* dest points to the last byte */
+ adds loopcnt = -1, len;; /* loopcnt = len - 1 */
+ mov ar.lc = loopcnt;; /* set the loop counter */
.l6:
(p[0]) ld1 r[0] = [src], -1
(p[MEMLAT]) st1 [dest] = r[MEMLAT], -1
@@ -239,7 +239,7 @@ END(memmove)
.rodata
.align 8
.table:
- data8 0 // dummy entry
+ data8 0 /* dummy entry */
data8 .loop56 - .loop8
data8 .loop56 - .loop16
data8 .loop56 - .loop24
diff --git a/libc/string/ia64/memset.S b/libc/string/ia64/memset.S
index ed27f3f31..45df5838e 100644
--- a/libc/string/ia64/memset.S
+++ b/libc/string/ia64/memset.S
@@ -46,15 +46,15 @@
#define ptr1 r28
#define ptr2 r27
#define ptr3 r26
-#define ptr9 r24
+#define ptr9 r24
#define loopcnt r23
#define linecnt r22
#define bytecnt r21
#define fvalue f6
-// This routine uses only scratch predicate registers (p6 - p15)
-#define p_scr p6 // default register for same-cycle branches
+/* This routine uses only scratch predicate registers (p6 - p15) */
+#define p_scr p6 /* default register for same-cycle branches */
#define p_nz p7
#define p_zr p8
#define p_unalgn p9
@@ -68,7 +68,7 @@
#define MIN1 15
#define MIN1P1HALF 8
#define LINE_SIZE 128
-#define LSIZE_SH 7 // shift amount
+#define LSIZE_SH 7 /* shift amount */
#define PREF_AHEAD 8
#define USE_FLP
@@ -90,97 +90,97 @@ ENTRY(memset)
movi0 save_lc = ar.lc
} { .mmi
.body
- mov ret0 = dest // return value
- cmp.ne p_nz, p_zr = value, r0 // use stf.spill if value is zero
+ mov ret0 = dest /* return value */
+ cmp.ne p_nz, p_zr = value, r0 /* use stf.spill if value is zero */
cmp.eq p_scr, p0 = cnt, r0
;; }
{ .mmi
- and ptr2 = -(MIN1+1), dest // aligned address
- and tmp = MIN1, dest // prepare to check for alignment
- tbit.nz p_y, p_n = dest, 0 // Do we have an odd address? (M_B_U)
+ and ptr2 = -(MIN1+1), dest /* aligned address */
+ and tmp = MIN1, dest /* prepare to check for alignment */
+ tbit.nz p_y, p_n = dest, 0 /* Do we have an odd address? (M_B_U) */
} { .mib
mov ptr1 = dest
- mux1 value = value, @brcst // create 8 identical bytes in word
-(p_scr) br.ret.dpnt.many rp // return immediately if count = 0
+ mux1 value = value, @brcst /* create 8 identical bytes in word */
+(p_scr) br.ret.dpnt.many rp /* return immediately if count = 0 */
;; }
{ .mib
cmp.ne p_unalgn, p0 = tmp, r0
-} { .mib // NB: # of bytes to move is 1 higher
- sub bytecnt = (MIN1+1), tmp // than loopcnt
- cmp.gt p_scr, p0 = 16, cnt // is it a minimalistic task?
-(p_scr) br.cond.dptk.many .move_bytes_unaligned // go move just a few (M_B_U)
+} { .mib /* NB: # of bytes to move is 1 higher */
+ sub bytecnt = (MIN1+1), tmp /* than loopcnt */
+ cmp.gt p_scr, p0 = 16, cnt /* is it a minimalistic task? */
+(p_scr) br.cond.dptk.many .move_bytes_unaligned /* go move just a few (M_B_U) */
;; }
{ .mmi
-(p_unalgn) add ptr1 = (MIN1+1), ptr2 // after alignment
-(p_unalgn) add ptr2 = MIN1P1HALF, ptr2 // after alignment
-(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 3 // should we do a st8 ?
+(p_unalgn) add ptr1 = (MIN1+1), ptr2 /* after alignment */
+(p_unalgn) add ptr2 = MIN1P1HALF, ptr2 /* after alignment */
+(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 3 /* should we do a st8 ? */
;; }
{ .mib
(p_y) add cnt = -8, cnt
-(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 2 // should we do a st4 ?
+(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 2 /* should we do a st4 ? */
} { .mib
(p_y) st8 [ptr2] = value, -4
(p_n) add ptr2 = 4, ptr2
;; }
{ .mib
(p_yy) add cnt = -4, cnt
-(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 1 // should we do a st2 ?
+(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 1 /* should we do a st2 ? */
} { .mib
(p_yy) st4 [ptr2] = value, -2
(p_nn) add ptr2 = 2, ptr2
;; }
{ .mmi
- mov tmp = LINE_SIZE+1 // for compare
+ mov tmp = LINE_SIZE+1 /* for compare */
(p_y) add cnt = -2, cnt
-(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 0 // should we do a st1 ?
+(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 0 /* should we do a st1 ? */
} { .mmi
- setf.sig fvalue=value // transfer value to FLP side
+ setf.sig fvalue=value /* transfer value to FLP side */
(p_y) st2 [ptr2] = value, -1
(p_n) add ptr2 = 1, ptr2
;; }
{ .mmi
(p_yy) st1 [ptr2] = value
- cmp.gt p_scr, p0 = tmp, cnt // is it a minimalistic task?
+ cmp.gt p_scr, p0 = tmp, cnt /* is it a minimalistic task? */
} { .mbb
(p_yy) add cnt = -1, cnt
-(p_scr) br.cond.dpnt.many .fraction_of_line // go move just a few
+(p_scr) br.cond.dpnt.many .fraction_of_line /* go move just a few */
;; }
{ .mib
nop.m 0
shr.u linecnt = cnt, LSIZE_SH
-(p_zr) br.cond.dptk.many .l1b // Jump to use stf.spill
+(p_zr) br.cond.dptk.many .l1b /* Jump to use stf.spill */
;; }
#ifndef GAS_ALIGN_BREAKS_UNWIND_INFO
- .align 32 // -------- // L1A: store ahead into cache lines; fill later
+ .align 32 /* -------- L1A: store ahead into cache lines; fill later */
#endif
{ .mmi
- and tmp = -(LINE_SIZE), cnt // compute end of range
- mov ptr9 = ptr1 // used for prefetching
- and cnt = (LINE_SIZE-1), cnt // remainder
+ and tmp = -(LINE_SIZE), cnt /* compute end of range */
+ mov ptr9 = ptr1 /* used for prefetching */
+ and cnt = (LINE_SIZE-1), cnt /* remainder */
} { .mmi
- mov loopcnt = PREF_AHEAD-1 // default prefetch loop
- cmp.gt p_scr, p0 = PREF_AHEAD, linecnt // check against actual value
+ mov loopcnt = PREF_AHEAD-1 /* default prefetch loop */
+ cmp.gt p_scr, p0 = PREF_AHEAD, linecnt /* check against actual value */
;; }
{ .mmi
-(p_scr) add loopcnt = -1, linecnt // start of stores
- add ptr2 = 8, ptr1 // (beyond prefetch stores)
- add ptr1 = tmp, ptr1 // first address beyond total
-;; } // range
+(p_scr) add loopcnt = -1, linecnt /* start of stores */
+ add ptr2 = 8, ptr1 /* (beyond prefetch stores) */
+ add ptr1 = tmp, ptr1 /* first address beyond total */
+;; } /* range */
{ .mmi
- add tmp = -1, linecnt // next loop count
+ add tmp = -1, linecnt /* next loop count */
movi0 ar.lc = loopcnt
;; }
.pref_l1a:
{ .mib
- store [ptr9] = myval, 128 // Do stores one cache line apart
+ store [ptr9] = myval, 128 /* Do stores one cache line apart */
nop.i 0
br.cloop.dptk.few .pref_l1a
;; }
{ .mmi
- add ptr0 = 16, ptr2 // Two stores in parallel
+ add ptr0 = 16, ptr2 /* Two stores in parallel */
movi0 ar.lc = tmp
;; }
.l1ax:
@@ -211,7 +211,7 @@ ENTRY(memset)
{ .mmi
store [ptr2] = myval, 8
store [ptr0] = myval, 32
- cmp.lt p_scr, p0 = ptr9, ptr1 // do we need more prefetching?
+ cmp.lt p_scr, p0 = ptr9, ptr1 /* do we need more prefetching? */
;; }
{ .mmb
store [ptr2] = myval, 24
@@ -219,9 +219,9 @@ ENTRY(memset)
br.cloop.dptk.few .l1ax
;; }
{ .mbb
- cmp.le p_scr, p0 = 8, cnt // just a few bytes left ?
-(p_scr) br.cond.dpnt.many .fraction_of_line // Branch no. 2
- br.cond.dpnt.many .move_bytes_from_alignment // Branch no. 3
+ cmp.le p_scr, p0 = 8, cnt /* just a few bytes left ? */
+(p_scr) br.cond.dpnt.many .fraction_of_line /* Branch no. 2 */
+ br.cond.dpnt.many .move_bytes_from_alignment /* Branch no. 3 */
;; }
#ifdef GAS_ALIGN_BREAKS_UNWIND_INFO
@@ -229,32 +229,32 @@ ENTRY(memset)
#else
.align 32
#endif
-.l1b: // ------------------ // L1B: store ahead into cache lines; fill later
+.l1b: /* ------------------ L1B: store ahead into cache lines; fill later */
{ .mmi
- and tmp = -(LINE_SIZE), cnt // compute end of range
- mov ptr9 = ptr1 // used for prefetching
- and cnt = (LINE_SIZE-1), cnt // remainder
+ and tmp = -(LINE_SIZE), cnt /* compute end of range */
+ mov ptr9 = ptr1 /* used for prefetching */
+ and cnt = (LINE_SIZE-1), cnt /* remainder */
} { .mmi
- mov loopcnt = PREF_AHEAD-1 // default prefetch loop
- cmp.gt p_scr, p0 = PREF_AHEAD, linecnt // check against actual value
+ mov loopcnt = PREF_AHEAD-1 /* default prefetch loop */
+ cmp.gt p_scr, p0 = PREF_AHEAD, linecnt /* check against actual value */
;; }
{ .mmi
(p_scr) add loopcnt = -1, linecnt
- add ptr2 = 16, ptr1 // start of stores (beyond prefetch stores)
- add ptr1 = tmp, ptr1 // first address beyond total range
+ add ptr2 = 16, ptr1 /* start of stores (beyond prefetch stores) */
+ add ptr1 = tmp, ptr1 /* first address beyond total range */
;; }
{ .mmi
- add tmp = -1, linecnt // next loop count
+ add tmp = -1, linecnt /* next loop count */
movi0 ar.lc = loopcnt
;; }
.pref_l1b:
{ .mib
- stf.spill [ptr9] = f0, 128 // Do stores one cache line apart
+ stf.spill [ptr9] = f0, 128 /* Do stores one cache line apart */
nop.i 0
br.cloop.dptk.few .pref_l1b
;; }
{ .mmi
- add ptr0 = 16, ptr2 // Two stores in parallel
+ add ptr0 = 16, ptr2 /* Two stores in parallel */
movi0 ar.lc = tmp
;; }
.l1bx:
@@ -269,7 +269,7 @@ ENTRY(memset)
{ .mmi
stf.spill [ptr2] = f0, 32
stf.spill [ptr0] = f0, 64
- cmp.lt p_scr, p0 = ptr9, ptr1 // do we need more prefetching?
+ cmp.lt p_scr, p0 = ptr9, ptr1 /* do we need more prefetching? */
;; }
{ .mmb
stf.spill [ptr2] = f0, 32
@@ -277,14 +277,14 @@ ENTRY(memset)
br.cloop.dptk.few .l1bx
;; }
{ .mib
- cmp.gt p_scr, p0 = 8, cnt // just a few bytes left ?
+ cmp.gt p_scr, p0 = 8, cnt /* just a few bytes left ? */
(p_scr) br.cond.dpnt.many .move_bytes_from_alignment
;; }
.fraction_of_line:
{ .mib
add ptr2 = 16, ptr1
- shr.u loopcnt = cnt, 5 // loopcnt = cnt / 32
+ shr.u loopcnt = cnt, 5 /* loopcnt = cnt / 32 */
;; }
{ .mib
cmp.eq p_scr, p0 = loopcnt, r0
@@ -292,13 +292,13 @@ ENTRY(memset)
(p_scr) br.cond.dpnt.many store_words
;; }
{ .mib
- and cnt = 0x1f, cnt // compute the remaining cnt
+ and cnt = 0x1f, cnt /* compute the remaining cnt */
movi0 ar.lc = loopcnt
;; }
#ifndef GAS_ALIGN_BREAKS_UNWIND_INFO
.align 32
#endif
-.l2: // ---------------------------- // L2A: store 32B in 2 cycles
+.l2: /* ---------------------------- L2A: store 32B in 2 cycles */
{ .mmb
store [ptr1] = myval, 8
store [ptr2] = myval, 8
@@ -309,34 +309,34 @@ ENTRY(memset)
;; }
store_words:
{ .mib
- cmp.gt p_scr, p0 = 8, cnt // just a few bytes left ?
-(p_scr) br.cond.dpnt.many .move_bytes_from_alignment // Branch
+ cmp.gt p_scr, p0 = 8, cnt /* just a few bytes left ? */
+(p_scr) br.cond.dpnt.many .move_bytes_from_alignment /* Branch */
;; }
{ .mmi
- store [ptr1] = myval, 8 // store
- cmp.le p_y, p_n = 16, cnt //
- add cnt = -8, cnt // subtract
+ store [ptr1] = myval, 8 /* store */
+ cmp.le p_y, p_n = 16, cnt /* */
+ add cnt = -8, cnt /* subtract */
;; }
{ .mmi
-(p_y) store [ptr1] = myval, 8 // store
-(p_y) cmp.le.unc p_yy, p_nn = 16, cnt //
-(p_y) add cnt = -8, cnt // subtract
+(p_y) store [ptr1] = myval, 8 /* store */
+(p_y) cmp.le.unc p_yy, p_nn = 16, cnt /* */
+(p_y) add cnt = -8, cnt /* subtract */
;; }
-{ .mmi // store
-(p_yy) store [ptr1] = myval, 8 //
-(p_yy) add cnt = -8, cnt // subtract
+{ .mmi /* store */
+(p_yy) store [ptr1] = myval, 8 /* */
+(p_yy) add cnt = -8, cnt /* subtract */
;; }
.move_bytes_from_alignment:
{ .mib
cmp.eq p_scr, p0 = cnt, r0
- tbit.nz.unc p_y, p0 = cnt, 2 // should we terminate with a st4 ?
+ tbit.nz.unc p_y, p0 = cnt, 2 /* should we terminate with a st4 ? */
(p_scr) br.cond.dpnt.few .restore_and_exit
;; }
{ .mib
(p_y) st4 [ptr1] = value, 4
- tbit.nz.unc p_yy, p0 = cnt, 1 // should we terminate with a st2 ?
+ tbit.nz.unc p_yy, p0 = cnt, 1 /* should we terminate with a st2 ? */
;; }
{ .mib
(p_yy) st2 [ptr1] = value, 2
@@ -362,38 +362,38 @@ store_words:
(p_n) add ptr2 = 2, ptr1
} { .mmi
(p_y) add ptr2 = 3, ptr1
-(p_y) st1 [ptr1] = value, 1 // fill 1 (odd-aligned) byte
-(p_y) add cnt = -1, cnt // [15, 14 (or less) left]
+(p_y) st1 [ptr1] = value, 1 /* fill 1 (odd-aligned) byte */
+(p_y) add cnt = -1, cnt /* [15, 14 (or less) left] */
;; }
{ .mmi
(p_yy) cmp.le.unc p_y, p0 = 8, cnt
- add ptr3 = ptr1, cnt // prepare last store
+ add ptr3 = ptr1, cnt /* prepare last store */
movi0 ar.lc = save_lc
} { .mmi
-(p_yy) st2 [ptr1] = value, 4 // fill 2 (aligned) bytes
-(p_yy) st2 [ptr2] = value, 4 // fill 2 (aligned) bytes
-(p_yy) add cnt = -4, cnt // [11, 10 (o less) left]
+(p_yy) st2 [ptr1] = value, 4 /* fill 2 (aligned) bytes */
+(p_yy) st2 [ptr2] = value, 4 /* fill 2 (aligned) bytes */
+(p_yy) add cnt = -4, cnt /* [11, 10 (o less) left] */
;; }
{ .mmi
(p_y) cmp.le.unc p_yy, p0 = 8, cnt
- add ptr3 = -1, ptr3 // last store
- tbit.nz p_scr, p0 = cnt, 1 // will there be a st2 at the end ?
+ add ptr3 = -1, ptr3 /* last store */
+ tbit.nz p_scr, p0 = cnt, 1 /* will there be a st2 at the end ? */
} { .mmi
-(p_y) st2 [ptr1] = value, 4 // fill 2 (aligned) bytes
-(p_y) st2 [ptr2] = value, 4 // fill 2 (aligned) bytes
-(p_y) add cnt = -4, cnt // [7, 6 (or less) left]
+(p_y) st2 [ptr1] = value, 4 /* fill 2 (aligned) bytes */
+(p_y) st2 [ptr2] = value, 4 /* fill 2 (aligned) bytes */
+(p_y) add cnt = -4, cnt /* [7, 6 (or less) left] */
;; }
{ .mmi
-(p_yy) st2 [ptr1] = value, 4 // fill 2 (aligned) bytes
-(p_yy) st2 [ptr2] = value, 4 // fill 2 (aligned) bytes
- // [3, 2 (or less) left]
- tbit.nz p_y, p0 = cnt, 0 // will there be a st1 at the end ?
+(p_yy) st2 [ptr1] = value, 4 /* fill 2 (aligned) bytes */
+(p_yy) st2 [ptr2] = value, 4 /* fill 2 (aligned) bytes */
+ /* [3, 2 (or less) left] */
+ tbit.nz p_y, p0 = cnt, 0 /* will there be a st1 at the end ? */
} { .mmi
(p_yy) add cnt = -4, cnt
;; }
{ .mmb
-(p_scr) st2 [ptr1] = value // fill 2 (aligned) bytes
-(p_y) st1 [ptr3] = value // fill last byte (using ptr3)
+(p_scr) st2 [ptr1] = value /* fill 2 (aligned) bytes */
+(p_y) st1 [ptr3] = value /* fill last byte (using ptr3) */
br.ret.sptk.many rp
;; }
END(memset)
diff --git a/libc/string/ia64/strchr.S b/libc/string/ia64/strchr.S
index 401a07941..66703f26d 100644
--- a/libc/string/ia64/strchr.S
+++ b/libc/string/ia64/strchr.S
@@ -49,15 +49,15 @@ ENTRY(strchr)
.prologue
alloc r2 = ar.pfs, 2, 0, 0, 0
.save ar.lc, saved_lc
- mov saved_lc = ar.lc // save the loop counter
+ mov saved_lc = ar.lc /* save the loop counter */
.body
mov ret0 = str
- and tmp = 7, str // tmp = str % 8
+ and tmp = 7, str /* tmp = str % 8 */
mux1 chrx8 = chr, @brcst
- extr.u chr = chr, 0, 8 // retain only the last byte
- cmp.ne p8, p0 = r0, r0 // clear p8
+ extr.u chr = chr, 0, 8 /* retain only the last byte */
+ cmp.ne p8, p0 = r0, r0 /* clear p8 */
;;
- sub loopcnt = 8, tmp // loopcnt = 8 - tmp
+ sub loopcnt = 8, tmp /* loopcnt = 8 - tmp */
cmp.eq p6, p0 = tmp, r0
(p6) br.cond.sptk .str_aligned;;
adds loopcnt = -1, loopcnt;;
@@ -75,10 +75,10 @@ ENTRY(strchr)
nop.b 0
nop.b 0
.l2:
- ld8.s val2 = [ret0], 8 // don't bomb out here
+ ld8.s val2 = [ret0], 8 /* don't bomb out here */
czx1.r pos0 = val1
- xor tmp = val1, chrx8 // if val1 contains chr, tmp will
- ;; // contain a zero in its position
+ xor tmp = val1, chrx8 /* if val1 contains chr, tmp will */
+ ;; /* contain a zero in its position */
czx1.r poschr = tmp
cmp.ne p6, p0 = 8, pos0
;;
@@ -90,21 +90,21 @@ ENTRY(strchr)
mov val1 = val2
br.cond.dptk .l2
.foundit:
-(p6) cmp.lt p8, p0 = pos0, poschr // we found chr and null in the word
-(p8) br.cond.spnt .notfound // null was found before chr
+(p6) cmp.lt p8, p0 = pos0, poschr /* we found chr and null in the word */
+(p8) br.cond.spnt .notfound /* null was found before chr */
add ret0 = ret0, poschr ;;
- adds ret0 = -15, ret0 ;; // should be -16, but we decrement
-.restore_and_exit: // ret0 in the next instruction
- adds ret0 = -1, ret0 // ret0 was pointing 1 char too far
- mov ar.lc = saved_lc // restore the loop counter
+ adds ret0 = -15, ret0 ;; /* should be -16, but we decrement */
+.restore_and_exit: /* ret0 in the next instruction */
+ adds ret0 = -1, ret0 /* ret0 was pointing 1 char too far */
+ mov ar.lc = saved_lc /* restore the loop counter */
br.ret.sptk.many b0
.notfound:
- mov ret0 = r0 // return NULL if null was found
+ mov ret0 = r0 /* return NULL if null was found */
mov ar.lc = saved_lc
br.ret.sptk.many b0
.recovery:
adds ret0 = -8, ret0;;
- ld8 val2 = [ret0], 8 // bomb out here
+ ld8 val2 = [ret0], 8 /* bomb out here */
br.cond.sptk .back
END(strchr)
libc_hidden_def (strchr)
diff --git a/libc/string/ia64/strcmp.S b/libc/string/ia64/strcmp.S
index d3b41e642..4da72fa10 100644
--- a/libc/string/ia64/strcmp.S
+++ b/libc/string/ia64/strcmp.S
@@ -42,7 +42,7 @@ ENTRY(strcmp)
.loop:
ld1 val1 = [s1], 1
ld1 val2 = [s2], 1
- cmp.eq p6, p0 = r0, r0 // set p6
+ cmp.eq p6, p0 = r0, r0 /* set p6 */
;;
cmp.ne.and p6, p0 = val1, r0
cmp.ne.and p6, p0 = val2, r0
diff --git a/libc/string/ia64/strcpy.S b/libc/string/ia64/strcpy.S
index e4a9915ca..7b002f661 100644
--- a/libc/string/ia64/strcpy.S
+++ b/libc/string/ia64/strcpy.S
@@ -27,8 +27,8 @@
In this form, it assumes little endian mode. For big endian mode, the
the two shifts in .l2 must be inverted:
- shl value = r[1], sh1 // value = w0 << sh1
- shr.u tmp = r[0], sh2 // tmp = w1 >> sh2
+ shl value = r[1], sh1 // value = w0 << sh1
+ shr.u tmp = r[0], sh2 // tmp = w1 >> sh2
*/
#include "sysdep.h"
@@ -53,62 +53,62 @@
ENTRY(strcpy)
.prologue
- alloc r2 = ar.pfs, 2, 0, 30, 32
+ alloc r2 = ar.pfs, 2, 0, 30, 32
#define MEMLAT 2
.rotr r[MEMLAT + 2]
.rotp p[MEMLAT + 1]
- mov ret0 = in0 // return value = dest
+ mov ret0 = in0 /* return value = dest */
.save pr, saved_pr
- mov saved_pr = pr // save the predicate registers
+ mov saved_pr = pr /* save the predicate registers */
.save ar.lc, saved_lc
- mov saved_lc = ar.lc // save the loop counter
+ mov saved_lc = ar.lc /* save the loop counter */
.body
- sub tmp = r0, in0 ;; // tmp = -dest
- mov dest = in0 // dest
- mov src = in1 // src
- and loopcnt = 7, tmp ;; // loopcnt = -dest % 8
+ sub tmp = r0, in0 ;; /* tmp = -dest */
+ mov dest = in0 /* dest */
+ mov src = in1 /* src */
+ and loopcnt = 7, tmp ;; /* loopcnt = -dest % 8 */
cmp.eq p6, p0 = loopcnt, r0
- adds loopcnt = -1, loopcnt // --loopcnt
+ adds loopcnt = -1, loopcnt /* --loopcnt */
(p6) br.cond.sptk .dest_aligned ;;
mov ar.lc = loopcnt
-.l1: // copy -dest % 8 bytes
- ld1 c = [src], 1 // c = *src++
+.l1: /* copy -dest % 8 bytes */
+ ld1 c = [src], 1 /* c = *src++ */
;;
- st1 [dest] = c, 1 // *dest++ = c
+ st1 [dest] = c, 1 /* *dest++ = c */
cmp.eq p6, p0 = c, r0
(p6) br.cond.dpnt .restore_and_exit
br.cloop.dptk .l1 ;;
.dest_aligned:
- and sh1 = 7, src // sh1 = src % 8
- mov ar.lc = -1 // "infinite" loop
- and asrc = -8, src ;; // asrc = src & -OPSIZ -- align src
+ and sh1 = 7, src /* sh1 = src % 8 */
+ mov ar.lc = -1 /* "infinite" loop */
+ and asrc = -8, src ;; /* asrc = src & -OPSIZ -- align src */
sub thresh = 8, sh1
- mov pr.rot = 1 << 16 // set rotating predicates
- cmp.ne p7, p0 = r0, r0 // clear p7
- shl sh1 = sh1, 3 ;; // sh1 = 8 * (src % 8)
- sub sh2 = 64, sh1 // sh2 = 64 - sh1
- cmp.eq p6, p0 = sh1, r0 // is the src aligned?
+ mov pr.rot = 1 << 16 /* set rotating predicates */
+ cmp.ne p7, p0 = r0, r0 /* clear p7 */
+ shl sh1 = sh1, 3 ;; /* sh1 = 8 * (src % 8) */
+ sub sh2 = 64, sh1 /* sh2 = 64 - sh1 */
+ cmp.eq p6, p0 = sh1, r0 /* is the src aligned? */
(p6) br.cond.sptk .src_aligned ;;
ld8 r[1] = [asrc],8 ;;
.align 32
.l2:
ld8.s r[0] = [asrc], 8
- shr.u value = r[1], sh1 ;; // value = w0 >> sh1
- czx1.r pos = value ;; // do we have an "early" zero
- cmp.lt p7, p0 = pos, thresh // in w0 >> sh1?
+ shr.u value = r[1], sh1 ;; /* value = w0 >> sh1 */
+ czx1.r pos = value ;; /* do we have an "early" zero */
+ cmp.lt p7, p0 = pos, thresh /* in w0 >> sh1? */
(p7) br.cond.dpnt .found0
- chk.s r[0], .recovery2 // it is safe to do that only
-.back2: // after the previous test
- shl tmp = r[0], sh2 // tmp = w1 << sh2
+ chk.s r[0], .recovery2 /* it is safe to do that only */
+.back2: /* after the previous test */
+ shl tmp = r[0], sh2 /* tmp = w1 << sh2 */
;;
- or value = value, tmp ;; // value |= tmp
+ or value = value, tmp ;; /* value |= tmp */
czx1.r pos = value ;;
cmp.ne p7, p0 = 8, pos
(p7) br.cond.dpnt .found0
- st8 [dest] = value, 8 // store val to dest
+ st8 [dest] = value, 8 /* store val to dest */
br.ctop.dptk .l2 ;;
.src_aligned:
.l3:
@@ -124,14 +124,14 @@ ENTRY(strcpy)
.found0:
mov ar.lc = pos
.l4:
- extr.u c = value, 0, 8 // c = value & 0xff
+ extr.u c = value, 0, 8 /* c = value & 0xff */
shr.u value = value, 8
;;
st1 [dest] = c, 1
br.cloop.dptk .l4 ;;
.restore_and_exit:
- mov ar.lc = saved_lc // restore the loop counter
- mov pr = saved_pr, -1 // restore the predicate registers
+ mov ar.lc = saved_lc /* restore the loop counter */
+ mov pr = saved_pr, -1 /* restore the predicate registers */
br.ret.sptk.many b0
.recovery2:
add tmp = -8, asrc ;;
diff --git a/libc/string/ia64/strlen.S b/libc/string/ia64/strlen.S
index 9b27a2d1b..edbe84359 100644
--- a/libc/string/ia64/strlen.S
+++ b/libc/string/ia64/strlen.S
@@ -50,13 +50,13 @@ ENTRY(strlen)
.prologue
alloc r2 = ar.pfs, 1, 0, 0, 0
.save ar.lc, saved_lc
- mov saved_lc = ar.lc // save the loop counter
+ mov saved_lc = ar.lc /* save the loop counter */
.body
mov str = in0
- mov len = r0 // len = 0
- and tmp = 7, in0 // tmp = str % 8
+ mov len = r0 /* len = 0 */
+ and tmp = 7, in0 /* tmp = str % 8 */
;;
- sub loopcnt = 8, tmp // loopcnt = 8 - tmp
+ sub loopcnt = 8, tmp /* loopcnt = 8 - tmp */
cmp.eq p6, p0 = tmp, r0
(p6) br.cond.sptk .str_aligned;;
adds loopcnt = -1, loopcnt;;
@@ -69,11 +69,11 @@ ENTRY(strlen)
adds len = 1, len
br.cloop.dptk .l1
.str_aligned:
- mov origadd = str // origadd = orig
+ mov origadd = str /* origadd = orig */
ld8 val1 = [str], 8;;
nop.b 0
nop.b 0
-.l2: ld8.s val2 = [str], 8 // don't bomb out here
+.l2: ld8.s val2 = [str], 8 /* don't bomb out here */
czx1.r pos0 = val1
;;
cmp.ne p6, p0 = 8, pos0
@@ -83,16 +83,16 @@ ENTRY(strlen)
mov val1 = val2
br.cond.dptk .l2
.foundit:
- sub tmp = str, origadd // tmp = crt address - orig
+ sub tmp = str, origadd /* tmp = crt address - orig */
add len = len, pos0;;
add len = len, tmp;;
adds len = -16, len
.restore_and_exit:
- mov ar.lc = saved_lc // restore the loop counter
+ mov ar.lc = saved_lc /* restore the loop counter */
br.ret.sptk.many b0
.recovery:
adds str = -8, str;;
- ld8 val2 = [str], 8 // bomb out here
+ ld8 val2 = [str], 8 /* bomb out here */
br.cond.sptk .back
END(strlen)
libc_hidden_def (strlen)
diff --git a/libc/string/ia64/strncmp.S b/libc/string/ia64/strncmp.S
index 8e0373c7f..e31f8fbd9 100644
--- a/libc/string/ia64/strncmp.S
+++ b/libc/string/ia64/strncmp.S
@@ -23,7 +23,7 @@
Inputs:
in0: s1
in1: s2
- in2: n
+ in2: n
Unlike memcmp(), this function is optimized for mismatches within the
first few characters. */
@@ -42,13 +42,13 @@
ENTRY(strncmp)
alloc r2 = ar.pfs, 3, 0, 0, 0
mov ret0 = r0
- cmp.eq p6, p0 = r0, r0 // set p6
- cmp.eq p7, p0 = n, r0 // return immediately if n == 0
+ cmp.eq p6, p0 = r0, r0 /* set p6 */
+ cmp.eq p7, p0 = n, r0 /* return immediately if n == 0 */
(p7) br.cond.spnt .restore_and_exit ;;
.loop:
ld1 val1 = [s1], 1
ld1 val2 = [s2], 1
- adds n = -1, n // n--
+ adds n = -1, n /* n-- */
;;
cmp.ne.and p6, p0 = val1, r0
cmp.ne.and p6, p0 = val2, r0
@@ -58,5 +58,5 @@ ENTRY(strncmp)
sub ret0 = val1, val2
.restore_and_exit:
br.ret.sptk.many b0
-END(strncmp)
+END(strncmp)
libc_hidden_weak (strncmp)
diff --git a/libc/string/ia64/strncpy.S b/libc/string/ia64/strncpy.S
index 4f1129350..3f29bbd52 100644
--- a/libc/string/ia64/strncpy.S
+++ b/libc/string/ia64/strncpy.S
@@ -58,64 +58,64 @@ ENTRY(strncpy)
.rotr r[MEMLAT + 2]
.rotp p[MEMLAT + 1]
- mov ret0 = in0 // return value = dest
+ mov ret0 = in0 /* return value = dest */
.save pr, saved_pr
- mov saved_pr = pr // save the predicate registers
+ mov saved_pr = pr /* save the predicate registers */
.save ar.lc, saved_lc
- mov saved_lc = ar.lc // save the loop counter
- mov ar.ec = 0 // ec is not guaranteed to
- // be zero upon function entry
+ mov saved_lc = ar.lc /* save the loop counter */
+ mov ar.ec = 0 /* ec is not guaranteed to */
+ /* be zero upon function entry */
.body
cmp.geu p6, p5 = 24, in2
(p6) br.cond.spnt .short_len
- sub tmp = r0, in0 ;; // tmp = -dest
- mov len = in2 // len
- mov dest = in0 // dest
- mov src = in1 // src
- and tmp = 7, tmp ;; // loopcnt = -dest % 8
+ sub tmp = r0, in0 ;; /* tmp = -dest */
+ mov len = in2 /* len */
+ mov dest = in0 /* dest */
+ mov src = in1 /* src */
+ and tmp = 7, tmp ;; /* loopcnt = -dest % 8 */
cmp.eq p6, p7 = tmp, r0
- adds loopcnt = -1, tmp // --loopcnt
+ adds loopcnt = -1, tmp /* --loopcnt */
(p6) br.cond.sptk .dest_aligned ;;
- sub len = len, tmp // len -= -dest % 8
+ sub len = len, tmp /* len -= -dest % 8 */
mov ar.lc = loopcnt
-.l1: // copy -dest % 8 bytes
-(p5) ld1 c = [src], 1 // c = *src++
+.l1: /* copy -dest % 8 bytes */
+(p5) ld1 c = [src], 1 /* c = *src++ */
;;
- st1 [dest] = c, 1 // *dest++ = c
+ st1 [dest] = c, 1 /* *dest++ = c */
cmp.ne p5, p7 = c, r0
br.cloop.dptk .l1 ;;
(p7) br.cond.dpnt .found0_align
-.dest_aligned: // p7 should be cleared here
- shr.u c = len, 3 // c = len / 8
- and sh1 = 7, src // sh1 = src % 8
- and asrc = -8, src ;; // asrc = src & -OPSIZ -- align src
- adds c = (MEMLAT-1), c // c = (len / 8) + MEMLAT - 1
+.dest_aligned: /* p7 should be cleared here */
+ shr.u c = len, 3 /* c = len / 8 */
+ and sh1 = 7, src /* sh1 = src % 8 */
+ and asrc = -8, src ;; /* asrc = src & -OPSIZ -- align src */
+ adds c = (MEMLAT-1), c /* c = (len / 8) + MEMLAT - 1 */
sub thresh = 8, sh1
- mov pr.rot = 1 << 16 // set rotating predicates
- shl sh1 = sh1, 3 ;; // sh1 = 8 * (src % 8)
- mov ar.lc = c // "infinite" loop
- sub sh2 = 64, sh1 // sh2 = 64 - sh1
- cmp.eq p6, p0 = sh1, r0 // is the src aligned?
+ mov pr.rot = 1 << 16 /* set rotating predicates */
+ shl sh1 = sh1, 3 ;; /* sh1 = 8 * (src % 8) */
+ mov ar.lc = c /* "infinite" loop */
+ sub sh2 = 64, sh1 /* sh2 = 64 - sh1 */
+ cmp.eq p6, p0 = sh1, r0 /* is the src aligned? */
(p6) br.cond.sptk .src_aligned
- adds c = -(MEMLAT-1), c ;; // c = (len / 8)
+ adds c = -(MEMLAT-1), c ;; /* c = (len / 8) */
ld8 r[1] = [asrc],8
mov ar.lc = c ;;
.align 32
.l2:
-(p6) st8 [dest] = value, 8 // store val to dest
+(p6) st8 [dest] = value, 8 /* store val to dest */
ld8.s r[0] = [asrc], 8
- shr.u value = r[1], sh1 ;; // value = w0 >> sh1
- czx1.r pos = value ;; // do we have an "early" zero
- cmp.lt p7, p0 = pos, thresh // in w0 >> sh1?
- adds len = -8, len // len -= 8
+ shr.u value = r[1], sh1 ;; /* value = w0 >> sh1 */
+ czx1.r pos = value ;; /* do we have an "early" zero */
+ cmp.lt p7, p0 = pos, thresh /* in w0 >> sh1? */
+ adds len = -8, len /* len -= 8 */
(p7) br.cond.dpnt .nonalign_found0
- chk.s r[0], .recovery2 // it is safe to do that only
-.back2: // after the previous test
- shl tmp = r[0], sh2 // tmp = w1 << sh2
+ chk.s r[0], .recovery2 /* it is safe to do that only */
+.back2: /* after the previous test */
+ shl tmp = r[0], sh2 /* tmp = w1 << sh2 */
;;
- or value = value, tmp ;; // value |= tmp
+ or value = value, tmp ;; /* value |= tmp */
czx1.r pos = value ;;
cmp.ne p7, p6 = 8, pos
(p7) br.cond.dpnt .nonalign_found0
@@ -137,7 +137,7 @@ ENTRY(strncpy)
(p[MEMLAT]) mov value = r[MEMLAT]
(p[MEMLAT]) czx1.r pos = r[MEMLAT] ;;
(p[MEMLAT]) cmp.ne p7, p0 = 8, pos
-(p[MEMLAT]) adds len = -8, len // len -= 8
+(p[MEMLAT]) adds len = -8, len /* len -= 8 */
(p7) br.cond.dpnt .found0
(p[MEMLAT]) st8 [dest] = r[MEMLAT], 8
br.ctop.dptk .l3 ;;
@@ -152,7 +152,7 @@ ENTRY(strncpy)
(p5) br.cond.dptk .restore_and_exit ;;
mov ar.lc = len
.l4:
-(p6) extr.u c = value, 0, 8 // c = value & 0xff
+(p6) extr.u c = value, 0, 8 /* c = value & 0xff */
(p6) shr.u value = value, 8 ;;
st1 [dest] = c, 1
cmp.ne p6, p0 = c, r0
@@ -165,7 +165,7 @@ ENTRY(strncpy)
mov value = 0 ;;
.found0:
shl tmp = pos, 3
- shr.u loopcnt = len, 4 // loopcnt = len / 16
+ shr.u loopcnt = len, 4 /* loopcnt = len / 16 */
mov c = -1 ;;
cmp.eq p6, p0 = loopcnt, r0
adds loopcnt = -1, loopcnt
@@ -192,24 +192,24 @@ ENTRY(strncpy)
st1 [dest] = r0, 1
br.cloop.dptk .l7 ;;
.restore_and_exit:
- mov ar.lc = saved_lc // restore the loop counter
- mov pr = saved_pr, -1 // restore the predicate registers
+ mov ar.lc = saved_lc /* restore the loop counter */
+ mov pr = saved_pr, -1 /* restore the predicate registers */
br.ret.sptk.many b0
.short_len:
cmp.eq p5, p0 = in2, r0
adds loopcnt = -1, in2
(p5) br.cond.spnt .restore_and_exit ;;
- mov ar.lc = loopcnt // p6 should be set when we get here
+ mov ar.lc = loopcnt /* p6 should be set when we get here */
.l8:
-(p6) ld1 c = [in1], 1 // c = *src++
+(p6) ld1 c = [in1], 1 /* c = *src++ */
;;
- st1 [in0] = c, 1 // *dest++ = c
+ st1 [in0] = c, 1 /* *dest++ = c */
(p6) cmp.ne p6, p0 = c, r0
br.cloop.dptk .l8
;;
- mov ar.lc = saved_lc // restore the loop counter
- mov pr = saved_pr, -1 // restore the predicate registers
+ mov ar.lc = saved_lc /* restore the loop counter */
+ mov pr = saved_pr, -1 /* restore the predicate registers */
br.ret.sptk.many b0
.recovery2:
add c = 8, len
diff --git a/libc/string/sh64/memcpy.S b/libc/string/sh64/memcpy.S
index 3c0ea0c0d..470784ecd 100644
--- a/libc/string/sh64/memcpy.S
+++ b/libc/string/sh64/memcpy.S
@@ -151,7 +151,7 @@ Large:
add r2, r4, r5
ldlo.q r3, 0, r0
addi r5, -16, r5
- movi 64+8, r27 // could subtract r7 from that.
+ movi 64+8, r27 /* could subtract r7 from that. */
stlo.q r2, 0, r0
sthi.q r2, 7, r0
ldx.q r22, r6, r0
diff --git a/libc/string/sh64/memset.S b/libc/string/sh64/memset.S
index f588323f0..1b8812cd6 100644
--- a/libc/string/sh64/memset.S
+++ b/libc/string/sh64/memset.S
@@ -32,12 +32,12 @@ memset:
ptabs r18, tr2
mshflo.b r3,r3,r3
add r4, r22, r23
- mperm.w r3, r63, r3 // Fill pattern now in every byte of r3
+ mperm.w r3, r63, r3 /* Fill pattern now in every byte of r3 */
movi 8, r9
- bgtu/u r23, r9, tr0 // multiquad
+ bgtu/u r23, r9, tr0 /* multiquad */
- beqi/u r4, 0, tr2 // Return with size 0 - ensures no mem accesses
+ beqi/u r4, 0, tr2 /* Return with size 0 - ensures no mem accesses */
ldlo.q r2, 0, r7
shlli r4, 2, r4
movi -1, r8
@@ -52,20 +52,21 @@ multiquad:
stlo.q r2, 0, r3
shlri r23, 3, r24
add r2, r4, r5
- beqi/u r24, 1, tr0 // lastquad
+ beqi/u r24, 1, tr0 /* lastquad */
pta/l loop, tr1
sub r2, r22, r25
- andi r5, -8, r20 // calculate end address and
- addi r20, -7*8, r8 // loop end address; This might overflow, so we need
- // to use a different test before we start the loop
- bge/u r24, r9, tr1 // loop
+ andi r5, -8, r20 /* calculate end address and */
+ addi r20, -7*8, r8 /* loop end address; This might overflow, so we need
+ to use a different test before we start the loop
+ */
+ bge/u r24, r9, tr1 /* loop */
st.q r25, 8, r3
st.q r20, -8, r3
shlri r24, 1, r24
- beqi/u r24, 1, tr0 // lastquad
+ beqi/u r24, 1, tr0 /* lastquad */
st.q r25, 16, r3
st.q r20, -16, r3
- beqi/u r24, 2, tr0 // lastquad
+ beqi/u r24, 2, tr0 /* lastquad */
st.q r25, 24, r3
st.q r20, -24, r3
lastquad:
@@ -73,15 +74,15 @@ lastquad:
blink tr2,r63
loop:
-!!! alloco r25, 32 // QQQ comment out for short-term fix to SHUK #3895.
- // QQQ commenting out is locically correct, but sub-optimal
- // QQQ Sean McGoogan - 4th April 2003.
+!!! alloco r25, 32 /* QQQ comment out for short-term fix to SHUK #3895.
+ QQQ commenting out is locically correct, but sub-optimal
+ QQQ Sean McGoogan - 4th April 2003. */
st.q r25, 8, r3
st.q r25, 16, r3
st.q r25, 24, r3
st.q r25, 32, r3
addi r25, 32, r25
- bgeu/l r8, r25, tr1 // loop
+ bgeu/l r8, r25, tr1 /* loop */
st.q r20, -40, r3
st.q r20, -32, r3
diff --git a/libc/string/sh64/strcpy.S b/libc/string/sh64/strcpy.S
index da79d5143..f317707b7 100644
--- a/libc/string/sh64/strcpy.S
+++ b/libc/string/sh64/strcpy.S
@@ -31,7 +31,7 @@ strcpy:
addi r2, 8, r0
mcmpeq.b r4,r63,r6
SHHI r6,r7,r6
- bnei/u r6,0,tr1 // shortstring
+ bnei/u r6,0,tr1 /* shortstring */
pta/l no_lddst, tr2
ori r3,-8,r23
sub r2, r23, r0
@@ -41,28 +41,28 @@ strcpy:
pta/l loop, tr0
ori r2,-8,r22
mcmpeq.b r5, r63, r6
- bgt/u r22, r23, tr2 // no_lddst
+ bgt/u r22, r23, tr2 /* no_lddst */
- // r22 < r23 : Need to do a load from the destination.
- // r22 == r23 : Doesn't actually need to load from destination,
- // but still can be handled here.
+ /* r22 < r23 : Need to do a load from the destination. */
+ /* r22 == r23 : Doesn't actually need to load from destination, */
+ /* but still can be handled here. */
ldlo.q r2, 0, r9
movi -1, r8
SHLO r8, r7, r8
mcmv r4, r8, r9
stlo.q r2, 0, r9
- beqi/l r6, 0, tr0 // loop
+ beqi/l r6, 0, tr0 /* loop */
add r5, r63, r4
addi r0, 8, r0
- blink tr1, r63 // shortstring
+ blink tr1, r63 /* shortstring */
no_lddst:
- // r22 > r23: note that for r22 == r23 the sthi.q would clobber
- // bytes before the destination region.
+ /* r22 > r23: note that for r22 == r23 the sthi.q would clobber */
+ /* bytes before the destination region. */
stlo.q r2, 0, r4
SHHI r4, r7, r4
sthi.q r0, -1, r4
- beqi/l r6, 0, tr0 // loop
+ beqi/l r6, 0, tr0 /* loop */
add r5, r63, r4
addi r0, 8, r0
@@ -77,7 +77,7 @@ shortstring2:
shlri r4,8,r4
addi r0,1,r0
bnei/l r5,0,tr1
- blink tr4,r63 // return
+ blink tr4,r63 /* return */
.balign 8
loop:
@@ -86,16 +86,16 @@ loop:
addi r0, 16, r0
sthi.q r0, -9, r5
mcmpeq.b r4, r63, r6
- bnei/u r6, 0, tr1 // shortstring
+ bnei/u r6, 0, tr1 /* shortstring */
ldx.q r0, r21, r5
stlo.q r0, -8, r4
sthi.q r0, -1, r4
mcmpeq.b r5, r63, r6
- beqi/l r6, 0, tr0 // loop
+ beqi/l r6, 0, tr0 /* loop */
add r5, r63, r4
addi r0, 8, r0
- blink tr1, r63 // shortstring
+ blink tr1, r63 /* shortstring */
.size strcpy,.-strcpy
diff --git a/libc/string/xtensa/memcpy.S b/libc/string/xtensa/memcpy.S
index 19f3a6818..fc04c023e 100644
--- a/libc/string/xtensa/memcpy.S
+++ b/libc/string/xtensa/memcpy.S
@@ -83,7 +83,7 @@ __memcpy_aux:
loopnez a4, 2f
#else
beqz a4, 2f
- add a7, a3, a4 // a7 = end address for source
+ add a7, a3, a4 /* a7 = end address for source */
#endif
1: l8ui a6, a3, 0
addi a3, a3, 1
@@ -98,7 +98,7 @@ __memcpy_aux:
/* Destination is unaligned. */
.align 4
-.Ldst1mod2: // dst is only byte aligned
+.Ldst1mod2: /* dst is only byte aligned */
/* Do short copies byte-by-byte. */
_bltui a4, 7, .Lbytecopy
@@ -113,7 +113,7 @@ __memcpy_aux:
/* Return to main algorithm if dst is now aligned. */
_bbci.l a5, 1, .Ldstaligned
-.Ldst2mod4: // dst has 16-bit alignment
+.Ldst2mod4: /* dst has 16-bit alignment */
/* Do short copies byte-by-byte. */
_bltui a4, 6, .Lbytecopy
@@ -134,7 +134,7 @@ __memcpy_aux:
ENTRY (memcpy)
/* a2 = dst, a3 = src, a4 = len */
- mov a5, a2 // copy dst so that a2 is return value
+ mov a5, a2 /* copy dst so that a2 is return value */
_bbsi.l a2, 0, .Ldst1mod2
_bbsi.l a2, 1, .Ldst2mod4
.Ldstaligned:
@@ -152,7 +152,7 @@ ENTRY (memcpy)
#else
beqz a7, 2f
slli a8, a7, 4
- add a8, a8, a3 // a8 = end of last 16B source chunk
+ add a8, a8, a3 /* a8 = end of last 16B source chunk */
#endif
1: l32i a6, a3, 0
l32i a7, a3, 4
@@ -218,18 +218,18 @@ ENTRY (memcpy)
/* Copy 16 bytes per iteration for word-aligned dst and
unaligned src. */
- ssa8 a3 // set shift amount from byte offset
+ ssa8 a3 /* set shift amount from byte offset */
#if UNALIGNED_ADDRESSES_CHECKED
- and a11, a3, a8 // save unalignment offset for below
- sub a3, a3, a11 // align a3
+ and a11, a3, a8 /* save unalignment offset for below */
+ sub a3, a3, a11 /* align a3 */
#endif
- l32i a6, a3, 0 // load first word
+ l32i a6, a3, 0 /* load first word */
#if XCHAL_HAVE_LOOPS
loopnez a7, 2f
#else
beqz a7, 2f
slli a10, a7, 4
- add a10, a10, a3 // a10 = end of last 16B source chunk
+ add a10, a10, a3 /* a10 = end of last 16B source chunk */
#endif
1: l32i a7, a3, 4
l32i a8, a3, 8
@@ -273,7 +273,7 @@ ENTRY (memcpy)
mov a6, a7
4:
#if UNALIGNED_ADDRESSES_CHECKED
- add a3, a3, a11 // readjust a3 with correct misalignment
+ add a3, a3, a11 /* readjust a3 with correct misalignment */
#endif
bbsi.l a4, 1, 5f
bbsi.l a4, 0, 6f
diff --git a/libc/string/xtensa/memset.S b/libc/string/xtensa/memset.S
index c0928825d..076b8f001 100644
--- a/libc/string/xtensa/memset.S
+++ b/libc/string/xtensa/memset.S
@@ -29,7 +29,7 @@
The algorithm is as follows:
Create a word with c in all byte positions.
-
+
If the destination is aligned, set 16B chunks with a loop, and then
finish up with 8B, 4B, 2B, and 1B stores conditional on the length.
@@ -57,7 +57,7 @@ __memset_aux:
loopnez a4, 2f
#else
beqz a4, 2f
- add a6, a5, a4 // a6 = ending address
+ add a6, a5, a4 /* a6 = ending address */
#endif
1: s8i a3, a5, 0
addi a5, a5, 1
@@ -71,7 +71,7 @@ __memset_aux:
.align 4
-.Ldst1mod2: // dst is only byte aligned
+.Ldst1mod2: /* dst is only byte aligned */
/* Do short sizes byte-by-byte. */
bltui a4, 8, .Lbyteset
@@ -84,7 +84,7 @@ __memset_aux:
/* Now retest if dst is aligned. */
_bbci.l a5, 1, .Ldstaligned
-.Ldst2mod4: // dst has 16-bit alignment
+.Ldst2mod4: /* dst has 16-bit alignment */
/* Do short sizes byte-by-byte. */
bltui a4, 8, .Lbyteset
@@ -108,7 +108,7 @@ ENTRY (memset)
slli a7, a3, 16
or a3, a3, a7
- mov a5, a2 // copy dst so that a2 is return value
+ mov a5, a2 /* copy dst so that a2 is return value */
/* Check if dst is unaligned. */
_bbsi.l a2, 0, .Ldst1mod2
@@ -124,7 +124,7 @@ ENTRY (memset)
#else
beqz a7, 2f
slli a6, a7, 4
- add a6, a6, a5 // a6 = end of last 16B chunk
+ add a6, a6, a5 /* a6 = end of last 16B chunk */
#endif
/* Set 16 bytes per iteration. */
1: s32i a3, a5, 0
diff --git a/libc/string/xtensa/strcmp.S b/libc/string/xtensa/strcmp.S
index 622bb27ed..ac058a2bf 100644
--- a/libc/string/xtensa/strcmp.S
+++ b/libc/string/xtensa/strcmp.S
@@ -45,35 +45,35 @@
ENTRY (strcmp)
/* a2 = s1, a3 = s2 */
- l8ui a8, a2, 0 // byte 0 from s1
- l8ui a9, a3, 0 // byte 0 from s2
- movi a10, 3 // mask
+ l8ui a8, a2, 0 /* byte 0 from s1 */
+ l8ui a9, a3, 0 /* byte 0 from s2 */
+ movi a10, 3 /* mask */
bne a8, a9, .Lretdiff
or a11, a2, a3
bnone a11, a10, .Laligned
- xor a11, a2, a3 // compare low two bits of s1 and s2
- bany a11, a10, .Lunaligned // if they have different alignment
+ xor a11, a2, a3 /* compare low two bits of s1 and s2 */
+ bany a11, a10, .Lunaligned /* if they have different alignment */
/* s1/s2 are not word-aligned. */
- addi a2, a2, 1 // advance s1
- beqz a8, .Leq // bytes equal, if zero, strings are equal
- addi a3, a3, 1 // advance s2
- bnone a2, a10, .Laligned // if s1/s2 now aligned
- l8ui a8, a2, 0 // byte 1 from s1
- l8ui a9, a3, 0 // byte 1 from s2
- addi a2, a2, 1 // advance s1
- bne a8, a9, .Lretdiff // if different, return difference
- beqz a8, .Leq // bytes equal, if zero, strings are equal
- addi a3, a3, 1 // advance s2
- bnone a2, a10, .Laligned // if s1/s2 now aligned
- l8ui a8, a2, 0 // byte 2 from s1
- l8ui a9, a3, 0 // byte 2 from s2
- addi a2, a2, 1 // advance s1
- bne a8, a9, .Lretdiff // if different, return difference
- beqz a8, .Leq // bytes equal, if zero, strings are equal
- addi a3, a3, 1 // advance s2
+ addi a2, a2, 1 /* advance s1 */
+ beqz a8, .Leq /* bytes equal, if zero, strings are equal */
+ addi a3, a3, 1 /* advance s2 */
+ bnone a2, a10, .Laligned /* if s1/s2 now aligned */
+ l8ui a8, a2, 0 /* byte 1 from s1 */
+ l8ui a9, a3, 0 /* byte 1 from s2 */
+ addi a2, a2, 1 /* advance s1 */
+ bne a8, a9, .Lretdiff /* if different, return difference */
+ beqz a8, .Leq /* bytes equal, if zero, strings are equal */
+ addi a3, a3, 1 /* advance s2 */
+ bnone a2, a10, .Laligned /* if s1/s2 now aligned */
+ l8ui a8, a2, 0 /* byte 2 from s1 */
+ l8ui a9, a3, 0 /* byte 2 from s2 */
+ addi a2, a2, 1 /* advance s1 */
+ bne a8, a9, .Lretdiff /* if different, return difference */
+ beqz a8, .Leq /* bytes equal, if zero, strings are equal */
+ addi a3, a3, 1 /* advance s2 */
j .Laligned
/* s1 and s2 have different alignment.
@@ -92,8 +92,8 @@ ENTRY (strcmp)
/* (2 mod 4) alignment for loop instruction */
.Lunaligned:
#if XCHAL_HAVE_LOOPS
- _movi.n a8, 0 // set up for the maximum loop count
- loop a8, .Lretdiff // loop forever (almost anyway)
+ _movi.n a8, 0 /* set up for the maximum loop count */
+ loop a8, .Lretdiff /* loop forever (almost anyway) */
#endif
.Lnextbyte:
l8ui a8, a2, 0
@@ -131,32 +131,32 @@ ENTRY (strcmp)
#if XCHAL_HAVE_LOOPS
.Laligned:
.begin no-transform
- l32r a4, .Lmask0 // mask for byte 0
+ l32r a4, .Lmask0 /* mask for byte 0 */
l32r a7, .Lmask4
/* Loop forever. (a4 is more than than the maximum number
of iterations) */
loop a4, .Laligned_done
/* First unrolled loop body. */
- l32i a8, a2, 0 // get word from s1
- l32i a9, a3, 0 // get word from s2
+ l32i a8, a2, 0 /* get word from s1 */
+ l32i a9, a3, 0 /* get word from s2 */
slli a5, a8, 1
bne a8, a9, .Lwne2
or a9, a8, a5
bnall a9, a7, .Lprobeq
/* Second unrolled loop body. */
- l32i a8, a2, 4 // get word from s1+4
- l32i a9, a3, 4 // get word from s2+4
+ l32i a8, a2, 4 /* get word from s1+4 */
+ l32i a9, a3, 4 /* get word from s2+4 */
slli a5, a8, 1
bne a8, a9, .Lwne2
or a9, a8, a5
bnall a9, a7, .Lprobeq2
- addi a2, a2, 8 // advance s1 pointer
- addi a3, a3, 8 // advance s2 pointer
+ addi a2, a2, 8 /* advance s1 pointer */
+ addi a3, a3, 8 /* advance s2 pointer */
.Laligned_done:
- or a1, a1, a1 // nop
+ or a1, a1, a1 /* nop */
.Lprobeq2:
/* Adjust pointers to account for the loop unrolling. */
@@ -166,15 +166,15 @@ ENTRY (strcmp)
#else /* !XCHAL_HAVE_LOOPS */
.Laligned:
- movi a4, MASK0 // mask for byte 0
+ movi a4, MASK0 /* mask for byte 0 */
movi a7, MASK4
j .Lfirstword
.Lnextword:
- addi a2, a2, 4 // advance s1 pointer
- addi a3, a3, 4 // advance s2 pointer
+ addi a2, a2, 4 /* advance s1 pointer */
+ addi a3, a3, 4 /* advance s2 pointer */
.Lfirstword:
- l32i a8, a2, 0 // get word from s1
- l32i a9, a3, 0 // get word from s2
+ l32i a8, a2, 0 /* get word from s1 */
+ l32i a9, a3, 0 /* get word from s2 */
slli a5, a8, 1
bne a8, a9, .Lwne2
or a9, a8, a5
@@ -186,49 +186,49 @@ ENTRY (strcmp)
/* Words are probably equal, but check for sure.
If not, loop over the rest of string using normal algorithm. */
- bnone a8, a4, .Leq // if byte 0 is zero
- l32r a5, .Lmask1 // mask for byte 1
- l32r a6, .Lmask2 // mask for byte 2
- bnone a8, a5, .Leq // if byte 1 is zero
- l32r a7, .Lmask3 // mask for byte 3
- bnone a8, a6, .Leq // if byte 2 is zero
- bnone a8, a7, .Leq // if byte 3 is zero
- addi.n a2, a2, 4 // advance s1 pointer
- addi.n a3, a3, 4 // advance s2 pointer
+ bnone a8, a4, .Leq /* if byte 0 is zero */
+ l32r a5, .Lmask1 /* mask for byte 1 */
+ l32r a6, .Lmask2 /* mask for byte 2 */
+ bnone a8, a5, .Leq /* if byte 1 is zero */
+ l32r a7, .Lmask3 /* mask for byte 3 */
+ bnone a8, a6, .Leq /* if byte 2 is zero */
+ bnone a8, a7, .Leq /* if byte 3 is zero */
+ addi.n a2, a2, 4 /* advance s1 pointer */
+ addi.n a3, a3, 4 /* advance s2 pointer */
#if XCHAL_HAVE_LOOPS
/* align (1 mod 4) */
- loop a4, .Leq // loop forever (a4 is bigger than max iters)
+ loop a4, .Leq /* loop forever (a4 is bigger than max iters) */
.end no-transform
- l32i a8, a2, 0 // get word from s1
- l32i a9, a3, 0 // get word from s2
- addi a2, a2, 4 // advance s1 pointer
+ l32i a8, a2, 0 /* get word from s1 */
+ l32i a9, a3, 0 /* get word from s2 */
+ addi a2, a2, 4 /* advance s1 pointer */
bne a8, a9, .Lwne
- bnone a8, a4, .Leq // if byte 0 is zero
- bnone a8, a5, .Leq // if byte 1 is zero
- bnone a8, a6, .Leq // if byte 2 is zero
- bnone a8, a7, .Leq // if byte 3 is zero
- addi a3, a3, 4 // advance s2 pointer
+ bnone a8, a4, .Leq /* if byte 0 is zero */
+ bnone a8, a5, .Leq /* if byte 1 is zero */
+ bnone a8, a6, .Leq /* if byte 2 is zero */
+ bnone a8, a7, .Leq /* if byte 3 is zero */
+ addi a3, a3, 4 /* advance s2 pointer */
#else /* !XCHAL_HAVE_LOOPS */
j .Lfirstword2
.Lnextword2:
- addi a3, a3, 4 // advance s2 pointer
+ addi a3, a3, 4 /* advance s2 pointer */
.Lfirstword2:
- l32i a8, a2, 0 // get word from s1
- l32i a9, a3, 0 // get word from s2
- addi a2, a2, 4 // advance s1 pointer
+ l32i a8, a2, 0 /* get word from s1 */
+ l32i a9, a3, 0 /* get word from s2 */
+ addi a2, a2, 4 /* advance s1 pointer */
bne a8, a9, .Lwne
- bnone a8, a4, .Leq // if byte 0 is zero
- bnone a8, a5, .Leq // if byte 1 is zero
- bnone a8, a6, .Leq // if byte 2 is zero
- bany a8, a7, .Lnextword2 // if byte 3 is zero
+ bnone a8, a4, .Leq /* if byte 0 is zero */
+ bnone a8, a5, .Leq /* if byte 1 is zero */
+ bnone a8, a6, .Leq /* if byte 2 is zero */
+ bany a8, a7, .Lnextword2 /* if byte 3 is zero */
#endif /* !XCHAL_HAVE_LOOPS */
/* Words are equal; some byte is zero. */
-.Leq: movi a2, 0 // return equal
+.Leq: movi a2, 0 /* return equal */
retw
.Lwne2: /* Words are not equal. On big-endian processors, if none of the
@@ -243,18 +243,18 @@ ENTRY (strcmp)
.Lposreturn:
movi a2, 1
retw
-.Lsomezero: // There is probably some zero byte.
+.Lsomezero: /* There is probably some zero byte. */
#endif /* __XTENSA_EB__ */
.Lwne: /* Words are not equal. */
- xor a2, a8, a9 // get word with nonzero in byte that differs
- bany a2, a4, .Ldiff0 // if byte 0 differs
- movi a5, MASK1 // mask for byte 1
- bnone a8, a4, .Leq // if byte 0 is zero
- bany a2, a5, .Ldiff1 // if byte 1 differs
- movi a6, MASK2 // mask for byte 2
- bnone a8, a5, .Leq // if byte 1 is zero
- bany a2, a6, .Ldiff2 // if byte 2 differs
- bnone a8, a6, .Leq // if byte 2 is zero
+ xor a2, a8, a9 /* get word with nonzero in byte that differs */
+ bany a2, a4, .Ldiff0 /* if byte 0 differs */
+ movi a5, MASK1 /* mask for byte 1 */
+ bnone a8, a4, .Leq /* if byte 0 is zero */
+ bany a2, a5, .Ldiff1 /* if byte 1 differs */
+ movi a6, MASK2 /* mask for byte 2 */
+ bnone a8, a5, .Leq /* if byte 1 is zero */
+ bany a2, a6, .Ldiff2 /* if byte 2 differs */
+ bnone a8, a6, .Leq /* if byte 2 is zero */
#ifdef __XTENSA_EB__
.Ldiff3:
.Ldiff2:
diff --git a/libc/string/xtensa/strcpy.S b/libc/string/xtensa/strcpy.S
index 108070384..dc0a15175 100644
--- a/libc/string/xtensa/strcpy.S
+++ b/libc/string/xtensa/strcpy.S
@@ -36,7 +36,7 @@
ENTRY (strcpy)
/* a2 = dst, a3 = src */
- mov a10, a2 // leave dst in return value register
+ mov a10, a2 /* leave dst in return value register */
movi a4, MASK0
movi a5, MASK1
movi a6, MASK2
@@ -51,23 +51,23 @@ ENTRY (strcpy)
j .Ldstunaligned
-.Lsrc1mod2: // src address is odd
- l8ui a8, a3, 0 // get byte 0
- addi a3, a3, 1 // advance src pointer
- s8i a8, a10, 0 // store byte 0
- beqz a8, 1f // if byte 0 is zero
- addi a10, a10, 1 // advance dst pointer
- bbci.l a3, 1, .Lsrcaligned // if src is now word-aligned
+.Lsrc1mod2: /* src address is odd */
+ l8ui a8, a3, 0 /* get byte 0 */
+ addi a3, a3, 1 /* advance src pointer */
+ s8i a8, a10, 0 /* store byte 0 */
+ beqz a8, 1f /* if byte 0 is zero */
+ addi a10, a10, 1 /* advance dst pointer */
+ bbci.l a3, 1, .Lsrcaligned /* if src is now word-aligned */
-.Lsrc2mod4: // src address is 2 mod 4
- l8ui a8, a3, 0 // get byte 0
+.Lsrc2mod4: /* src address is 2 mod 4 */
+ l8ui a8, a3, 0 /* get byte 0 */
/* 1-cycle interlock */
- s8i a8, a10, 0 // store byte 0
- beqz a8, 1f // if byte 0 is zero
- l8ui a8, a3, 1 // get byte 0
- addi a3, a3, 2 // advance src pointer
- s8i a8, a10, 1 // store byte 0
- addi a10, a10, 2 // advance dst pointer
+ s8i a8, a10, 0 /* store byte 0 */
+ beqz a8, 1f /* if byte 0 is zero */
+ l8ui a8, a3, 1 /* get byte 0 */
+ addi a3, a3, 2 /* advance src pointer */
+ s8i a8, a10, 1 /* store byte 0 */
+ addi a10, a10, 2 /* advance dst pointer */
bnez a8, .Lsrcaligned
1: retw
@@ -78,28 +78,28 @@ ENTRY (strcpy)
#if XCHAL_HAVE_LOOPS
/* (2 mod 4) alignment for loop instruction */
.Laligned:
- _movi.n a8, 0 // set up for the maximum loop count
- loop a8, .Lz3 // loop forever (almost anyway)
- l32i a8, a3, 0 // get word from src
- addi a3, a3, 4 // advance src pointer
- bnone a8, a4, .Lz0 // if byte 0 is zero
- bnone a8, a5, .Lz1 // if byte 1 is zero
- bnone a8, a6, .Lz2 // if byte 2 is zero
- s32i a8, a10, 0 // store word to dst
- bnone a8, a7, .Lz3 // if byte 3 is zero
- addi a10, a10, 4 // advance dst pointer
+ _movi.n a8, 0 /* set up for the maximum loop count */
+ loop a8, .Lz3 /* loop forever (almost anyway) */
+ l32i a8, a3, 0 /* get word from src */
+ addi a3, a3, 4 /* advance src pointer */
+ bnone a8, a4, .Lz0 /* if byte 0 is zero */
+ bnone a8, a5, .Lz1 /* if byte 1 is zero */
+ bnone a8, a6, .Lz2 /* if byte 2 is zero */
+ s32i a8, a10, 0 /* store word to dst */
+ bnone a8, a7, .Lz3 /* if byte 3 is zero */
+ addi a10, a10, 4 /* advance dst pointer */
#else /* !XCHAL_HAVE_LOOPS */
-1: addi a10, a10, 4 // advance dst pointer
+1: addi a10, a10, 4 /* advance dst pointer */
.Laligned:
- l32i a8, a3, 0 // get word from src
- addi a3, a3, 4 // advance src pointer
- bnone a8, a4, .Lz0 // if byte 0 is zero
- bnone a8, a5, .Lz1 // if byte 1 is zero
- bnone a8, a6, .Lz2 // if byte 2 is zero
- s32i a8, a10, 0 // store word to dst
- bany a8, a7, 1b // if byte 3 is zero
+ l32i a8, a3, 0 /* get word from src */
+ addi a3, a3, 4 /* advance src pointer */
+ bnone a8, a4, .Lz0 /* if byte 0 is zero */
+ bnone a8, a5, .Lz1 /* if byte 1 is zero */
+ bnone a8, a6, .Lz2 /* if byte 2 is zero */
+ s32i a8, a10, 0 /* store word to dst */
+ bany a8, a7, 1b /* if byte 3 is zero */
#endif /* !XCHAL_HAVE_LOOPS */
.Lz3: /* Byte 3 is zero. */
@@ -133,8 +133,8 @@ ENTRY (strcpy)
.Ldstunaligned:
#if XCHAL_HAVE_LOOPS
- _movi.n a8, 0 // set up for the maximum loop count
- loop a8, 2f // loop forever (almost anyway)
+ _movi.n a8, 0 /* set up for the maximum loop count */
+ loop a8, 2f /* loop forever (almost anyway) */
#endif
1: l8ui a8, a3, 0
addi a3, a3, 1
diff --git a/libc/string/xtensa/strlen.S b/libc/string/xtensa/strlen.S
index dd72c16fa..9ee4995f4 100644
--- a/libc/string/xtensa/strlen.S
+++ b/libc/string/xtensa/strlen.S
@@ -36,7 +36,7 @@
ENTRY (strlen)
/* a2 = s */
- addi a3, a2, -4 // because we overincrement at the end
+ addi a3, a2, -4 /* because we overincrement at the end */
movi a4, MASK0
movi a5, MASK1
movi a6, MASK2
@@ -45,21 +45,21 @@ ENTRY (strlen)
bbsi.l a2, 1, .L2mod4
j .Laligned
-.L1mod2: // address is odd
- l8ui a8, a3, 4 // get byte 0
- addi a3, a3, 1 // advance string pointer
- beqz a8, .Lz3 // if byte 0 is zero
- bbci.l a3, 1, .Laligned // if string pointer is now word-aligned
+.L1mod2: /* address is odd */
+ l8ui a8, a3, 4 /* get byte 0 */
+ addi a3, a3, 1 /* advance string pointer */
+ beqz a8, .Lz3 /* if byte 0 is zero */
+ bbci.l a3, 1, .Laligned /* if string pointer is now word-aligned */
-.L2mod4: // address is 2 mod 4
- addi a3, a3, 2 // advance ptr for aligned access
- l32i a8, a3, 0 // get word with first two bytes of string
- bnone a8, a6, .Lz2 // if byte 2 (of word, not string) is zero
- bany a8, a7, .Laligned // if byte 3 (of word, not string) is nonzero
+.L2mod4: /* address is 2 mod 4 */
+ addi a3, a3, 2 /* advance ptr for aligned access */
+ l32i a8, a3, 0 /* get word with first two bytes of string */
+ bnone a8, a6, .Lz2 /* if byte 2 (of word, not string) is zero */
+ bany a8, a7, .Laligned /* if byte 3 (of word, not string) is nonzero */
/* Byte 3 is zero. */
- addi a3, a3, 3 // point to zero byte
- sub a2, a3, a2 // subtract to get length
+ addi a3, a3, 3 /* point to zero byte */
+ sub a2, a3, a2 /* subtract to get length */
retw
@@ -69,36 +69,36 @@ ENTRY (strlen)
/* (2 mod 4) alignment for loop instruction */
.Laligned:
#if XCHAL_HAVE_LOOPS
- _movi.n a8, 0 // set up for the maximum loop count
- loop a8, .Lz3 // loop forever (almost anyway)
+ _movi.n a8, 0 /* set up for the maximum loop count */
+ loop a8, .Lz3 /* loop forever (almost anyway) */
#endif
-1: l32i a8, a3, 4 // get next word of string
- addi a3, a3, 4 // advance string pointer
- bnone a8, a4, .Lz0 // if byte 0 is zero
- bnone a8, a5, .Lz1 // if byte 1 is zero
- bnone a8, a6, .Lz2 // if byte 2 is zero
+1: l32i a8, a3, 4 /* get next word of string */
+ addi a3, a3, 4 /* advance string pointer */
+ bnone a8, a4, .Lz0 /* if byte 0 is zero */
+ bnone a8, a5, .Lz1 /* if byte 1 is zero */
+ bnone a8, a6, .Lz2 /* if byte 2 is zero */
#if XCHAL_HAVE_LOOPS
- bnone a8, a7, .Lz3 // if byte 3 is zero
+ bnone a8, a7, .Lz3 /* if byte 3 is zero */
#else
- bany a8, a7, 1b // repeat if byte 3 is non-zero
+ bany a8, a7, 1b /* repeat if byte 3 is non-zero */
#endif
.Lz3: /* Byte 3 is zero. */
- addi a3, a3, 3 // point to zero byte
+ addi a3, a3, 3 /* point to zero byte */
/* Fall through.... */
.Lz0: /* Byte 0 is zero. */
- sub a2, a3, a2 // subtract to get length
+ sub a2, a3, a2 /* subtract to get length */
retw
.Lz1: /* Byte 1 is zero. */
- addi a3, a3, 1 // point to zero byte
- sub a2, a3, a2 // subtract to get length
+ addi a3, a3, 1 /* point to zero byte */
+ sub a2, a3, a2 /* subtract to get length */
retw
.Lz2: /* Byte 2 is zero. */
- addi a3, a3, 2 // point to zero byte
- sub a2, a3, a2 // subtract to get length
+ addi a3, a3, 2 /* point to zero byte */
+ sub a2, a3, a2 /* subtract to get length */
retw
libc_hidden_def (strlen)
diff --git a/libc/string/xtensa/strncpy.S b/libc/string/xtensa/strncpy.S
index 7ba2ef77d..fe3ec894c 100644
--- a/libc/string/xtensa/strncpy.S
+++ b/libc/string/xtensa/strncpy.S
@@ -41,29 +41,29 @@
.literal_position
__strncpy_aux:
-.Lsrc1mod2: // src address is odd
- l8ui a8, a3, 0 // get byte 0
- addi a3, a3, 1 // advance src pointer
- s8i a8, a10, 0 // store byte 0
- addi a4, a4, -1 // decrement n
- beqz a4, .Lret // if n is zero
- addi a10, a10, 1 // advance dst pointer
- beqz a8, .Lfill // if byte 0 is zero
- bbci.l a3, 1, .Lsrcaligned // if src is now word-aligned
-
-.Lsrc2mod4: // src address is 2 mod 4
- l8ui a8, a3, 0 // get byte 0
- addi a4, a4, -1 // decrement n
- s8i a8, a10, 0 // store byte 0
- beqz a4, .Lret // if n is zero
- addi a10, a10, 1 // advance dst pointer
- beqz a8, .Lfill // if byte 0 is zero
- l8ui a8, a3, 1 // get byte 0
- addi a3, a3, 2 // advance src pointer
- s8i a8, a10, 0 // store byte 0
- addi a4, a4, -1 // decrement n
- beqz a4, .Lret // if n is zero
- addi a10, a10, 1 // advance dst pointer
+.Lsrc1mod2: /* src address is odd */
+ l8ui a8, a3, 0 /* get byte 0 */
+ addi a3, a3, 1 /* advance src pointer */
+ s8i a8, a10, 0 /* store byte 0 */
+ addi a4, a4, -1 /* decrement n */
+ beqz a4, .Lret /* if n is zero */
+ addi a10, a10, 1 /* advance dst pointer */
+ beqz a8, .Lfill /* if byte 0 is zero */
+ bbci.l a3, 1, .Lsrcaligned /* if src is now word-aligned */
+
+.Lsrc2mod4: /* src address is 2 mod 4 */
+ l8ui a8, a3, 0 /* get byte 0 */
+ addi a4, a4, -1 /* decrement n */
+ s8i a8, a10, 0 /* store byte 0 */
+ beqz a4, .Lret /* if n is zero */
+ addi a10, a10, 1 /* advance dst pointer */
+ beqz a8, .Lfill /* if byte 0 is zero */
+ l8ui a8, a3, 1 /* get byte 0 */
+ addi a3, a3, 2 /* advance src pointer */
+ s8i a8, a10, 0 /* store byte 0 */
+ addi a4, a4, -1 /* decrement n */
+ beqz a4, .Lret /* if n is zero */
+ addi a10, a10, 1 /* advance dst pointer */
bnez a8, .Lsrcaligned
j .Lfill
@@ -74,8 +74,8 @@ __strncpy_aux:
ENTRY (strncpy)
/* a2 = dst, a3 = src */
- mov a10, a2 // leave dst in return value register
- beqz a4, .Lret // if n is zero
+ mov a10, a2 /* leave dst in return value register */
+ beqz a4, .Lret /* if n is zero */
movi a11, MASK0
movi a5, MASK1
@@ -125,28 +125,28 @@ ENTRY (strncpy)
.Lfillcleanup:
/* Fill leftover (1 to 3) bytes with zero. */
- s8i a9, a10, 0 // store byte 0
- addi a4, a4, -1 // decrement n
+ s8i a9, a10, 0 /* store byte 0 */
+ addi a4, a4, -1 /* decrement n */
addi a10, a10, 1
- bnez a4, .Lfillcleanup
+ bnez a4, .Lfillcleanup
2: retw
-
-.Lfill1mod2: // dst address is odd
- s8i a9, a10, 0 // store byte 0
- addi a4, a4, -1 // decrement n
- beqz a4, 2b // if n is zero
- addi a10, a10, 1 // advance dst pointer
- bbci.l a10, 1, .Lfillaligned // if dst is now word-aligned
-
-.Lfill2mod4: // dst address is 2 mod 4
- s8i a9, a10, 0 // store byte 0
- addi a4, a4, -1 // decrement n
- beqz a4, 2b // if n is zero
- s8i a9, a10, 1 // store byte 1
- addi a4, a4, -1 // decrement n
- beqz a4, 2b // if n is zero
- addi a10, a10, 2 // advance dst pointer
+
+.Lfill1mod2: /* dst address is odd */
+ s8i a9, a10, 0 /* store byte 0 */
+ addi a4, a4, -1 /* decrement n */
+ beqz a4, 2b /* if n is zero */
+ addi a10, a10, 1 /* advance dst pointer */
+ bbci.l a10, 1, .Lfillaligned /* if dst is now word-aligned */
+
+.Lfill2mod4: /* dst address is 2 mod 4 */
+ s8i a9, a10, 0 /* store byte 0 */
+ addi a4, a4, -1 /* decrement n */
+ beqz a4, 2b /* if n is zero */
+ s8i a9, a10, 1 /* store byte 1 */
+ addi a4, a4, -1 /* decrement n */
+ beqz a4, 2b /* if n is zero */
+ addi a10, a10, 2 /* advance dst pointer */
j .Lfillaligned
@@ -156,32 +156,32 @@ ENTRY (strncpy)
/* (2 mod 4) alignment for loop instruction */
.Laligned:
#if XCHAL_HAVE_LOOPS
- _movi.n a8, 0 // set up for the maximum loop count
- loop a8, 1f // loop forever (almost anyway)
- blti a4, 5, .Ldstunaligned // n is near limit; do one at a time
- l32i a8, a3, 0 // get word from src
- addi a3, a3, 4 // advance src pointer
- bnone a8, a11, .Lz0 // if byte 0 is zero
- bnone a8, a5, .Lz1 // if byte 1 is zero
- bnone a8, a6, .Lz2 // if byte 2 is zero
- s32i a8, a10, 0 // store word to dst
- addi a4, a4, -4 // decrement n
- addi a10, a10, 4 // advance dst pointer
- bnone a8, a7, .Lfill // if byte 3 is zero
-1:
+ _movi.n a8, 0 /* set up for the maximum loop count */
+ loop a8, 1f /* loop forever (almost anyway) */
+ blti a4, 5, .Ldstunaligned /* n is near limit; do one at a time */
+ l32i a8, a3, 0 /* get word from src */
+ addi a3, a3, 4 /* advance src pointer */
+ bnone a8, a11, .Lz0 /* if byte 0 is zero */
+ bnone a8, a5, .Lz1 /* if byte 1 is zero */
+ bnone a8, a6, .Lz2 /* if byte 2 is zero */
+ s32i a8, a10, 0 /* store word to dst */
+ addi a4, a4, -4 /* decrement n */
+ addi a10, a10, 4 /* advance dst pointer */
+ bnone a8, a7, .Lfill /* if byte 3 is zero */
+1:
#else /* !XCHAL_HAVE_LOOPS */
-1: blti a4, 5, .Ldstunaligned // n is near limit; do one at a time
- l32i a8, a3, 0 // get word from src
- addi a3, a3, 4 // advance src pointer
- bnone a8, a11, .Lz0 // if byte 0 is zero
- bnone a8, a5, .Lz1 // if byte 1 is zero
- bnone a8, a6, .Lz2 // if byte 2 is zero
- s32i a8, a10, 0 // store word to dst
- addi a4, a4, -4 // decrement n
- addi a10, a10, 4 // advance dst pointer
- bany a8, a7, 1b // no zeroes
+1: blti a4, 5, .Ldstunaligned /* n is near limit; do one at a time */
+ l32i a8, a3, 0 /* get word from src */
+ addi a3, a3, 4 /* advance src pointer */
+ bnone a8, a11, .Lz0 /* if byte 0 is zero */
+ bnone a8, a5, .Lz1 /* if byte 1 is zero */
+ bnone a8, a6, .Lz2 /* if byte 2 is zero */
+ s32i a8, a10, 0 /* store word to dst */
+ addi a4, a4, -4 /* decrement n */
+ addi a10, a10, 4 /* advance dst pointer */
+ bany a8, a7, 1b /* no zeroes */
#endif /* !XCHAL_HAVE_LOOPS */
j .Lfill
@@ -191,8 +191,8 @@ ENTRY (strncpy)
movi a8, 0
#endif
s8i a8, a10, 0
- addi a4, a4, -1 // decrement n
- addi a10, a10, 1 // advance dst pointer
+ addi a4, a4, -1 /* decrement n */
+ addi a10, a10, 1 /* advance dst pointer */
j .Lfill
.Lz1: /* Byte 1 is zero. */
@@ -200,8 +200,8 @@ ENTRY (strncpy)
extui a8, a8, 16, 16
#endif
s16i a8, a10, 0
- addi a4, a4, -2 // decrement n
- addi a10, a10, 2 // advance dst pointer
+ addi a4, a4, -2 /* decrement n */
+ addi a10, a10, 2 /* advance dst pointer */
j .Lfill
.Lz2: /* Byte 2 is zero. */
@@ -211,8 +211,8 @@ ENTRY (strncpy)
s16i a8, a10, 0
movi a8, 0
s8i a8, a10, 2
- addi a4, a4, -3 // decrement n
- addi a10, a10, 3 // advance dst pointer
+ addi a4, a4, -3 /* decrement n */
+ addi a10, a10, 3 /* advance dst pointer */
j .Lfill
.align 4
@@ -220,8 +220,8 @@ ENTRY (strncpy)
.Ldstunaligned:
#if XCHAL_HAVE_LOOPS
- _movi.n a8, 0 // set up for the maximum loop count
- loop a8, 2f // loop forever (almost anyway)
+ _movi.n a8, 0 /* set up for the maximum loop count */
+ loop a8, 2f /* loop forever (almost anyway) */
#endif
1: l8ui a8, a3, 0
addi a3, a3, 1
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 11:28:37 +0000