diff options
| -rw-r--r-- | libc/sysdeps/linux/alpha/crt0.S | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/libc/sysdeps/linux/alpha/crt0.S b/libc/sysdeps/linux/alpha/crt0.S index a489622bf..1f93a4dc4 100644 --- a/libc/sysdeps/linux/alpha/crt0.S +++ b/libc/sysdeps/linux/alpha/crt0.S @@ -18,6 +18,19 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#define a0 $16 /* argument registers (caller-saved) */ +#define a1 $17 +#define a2 $18 +#define a3 $19 +#define a4 $20 +#define a5 $21 +#define ra $26 /* return address register */ + +#define s6 $15 +#define fp s6 /* frame-pointer (s6 in frame-less procedures) */ +#define gp $29 /* global pointer */ +#define sp $30 /* stack pointer */ +#define zero $31 /* reads as zero, writes are noops */ .text .align 3 @@ -25,34 +38,21 @@ .ent _start, 0 .type _start,@function _start: - .frame $15, 0, $31 - mov $31, $15 - br $29, 1f -1: ldgp $29, 0($29) - subq $30, 16, $30 + .frame fp, 0, zero + mov zero, fp + br gp, 1f +1: ldgp gp, 0(gp) + subq sp, 16, sp .prologue 0 - /* Load address of the user's main function. */ - lda $16, main - - ldl $17, 16($30) /* get argc */ - lda $18, 24($30) /* get argv */ - -#if 0 - /* Load address of our own entry points to .fini and .init. */ - lda $19, _init - lda $20, _fini - - /* Store address of the shared library termination function. */ - mov $0, $21 - - /* Provide the highest stack address to the user code. */ - stq $30, 0($30) -#endif + ldl a0, 16(sp) /* get argc */ + lda a1, 24(sp) /* get argv */ + addq a0, 1, a2 + s8addq a2, a1, a2 /* Calculate environ */ /* Call the user's main function, and exit with its value. But let the libc call main. */ - jsr $26, __uClibc_main + jsr ra, __uClibc_main /* Die very horribly if exit returns. Call_pal hlt is callable from kernel mode only; this will result in an illegal instruction trap. */ @@ -61,7 +61,7 @@ _start: /* For ECOFF backwards compatibility. */ .weak __start; - __start = _start + __start = _start /* Define a symbol for the first piece of initialized data. */ .data |