diff options
Diffstat (limited to 'libc/string/ia64/strcpy.S')
| -rw-r--r-- | libc/string/ia64/strcpy.S | 66 |
1 files changed, 33 insertions, 33 deletions
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 ;; |