diff options
Diffstat (limited to 'sysdeps/powerpc/dl-start.S')
| -rw-r--r-- | sysdeps/powerpc/dl-start.S | 72 |
1 files changed, 36 insertions, 36 deletions
diff --git a/sysdeps/powerpc/dl-start.S b/sysdeps/powerpc/dl-start.S index 7865bb6dc2..42ae370eef 100644 --- a/sysdeps/powerpc/dl-start.S +++ b/sysdeps/powerpc/dl-start.S @@ -1,5 +1,5 @@ /* Machine-dependent ELF startup code. PowerPC version. - Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. + Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -30,12 +30,12 @@ ENTRY(_start) arguments for the program loader. */ /* Call _dl_start with one parameter pointing at argc */ - mr %r3,%r1 + mr r3,r1 /* (we have to frob the stack pointer a bit to allow room for _dl_start to save the link register). */ - li %r4,0 - addi %r1,%r1,-16 - stw %r4,0(%r1) + li r4,0 + addi r1,r1,-16 + stw r4,0(r1) bl _dl_start@local /* Now, we do our main work of calling initialisation procedures. @@ -46,50 +46,50 @@ ENTRY(_start) /* Put our GOT pointer in r31, */ bl _GLOBAL_OFFSET_TABLE_-4@local - mflr %r31 + mflr r31 /* the address of _start in r30, */ - mr %r30,%r3 + mr r30,r3 /* &_dl_argc in 29, &_dl_argv in 27, and _dl_main_searchlist in 28. */ - lwz %r28,_dl_main_searchlist@got(%r31) - lwz %r29,_dl_argc@got(%r31) - lwz %r27,_dl_argv@got(%r31) + lwz r28,_dl_main_searchlist@got(r31) + lwz r29,_dl_argc@got(r31) + lwz r27,_dl_argv@got(r31) 0: /* Set initfunc = _dl_init_next(_dl_main_searchlist) */ - lwz %r3,0(%r28) + lwz r3,0(r28) bl _dl_init_next@plt /* If initfunc is NULL, we exit the loop; otherwise, */ - cmpwi %r3,0 + cmpwi r3,0 beq 1f /* call initfunc(_dl_argc, _dl_argv, _dl_argv+_dl_argc+1) */ - mtlr %r3 - lwz %r3,0(%r29) - lwz %r4,0(%r27) - slwi %r5,%r3,2 - add %r5,%r4,%r5 - addi %r5,%r5,4 + mtlr r3 + lwz r3,0(r29) + lwz r4,0(r27) + slwi r5,r3,2 + add r5,r4,r5 + addi r5,r5,4 blrl /* and loop. */ b 0b 1: /* Now, to conform to the ELF ABI, we have to: */ /* Pass argc (actually _dl_argc) in r3; */ - lwz %r3,0(%r29) + lwz r3,0(r29) /* pass argv (actually _dl_argv) in r4; */ - lwz %r4,0(%r27) + lwz r4,0(r27) /* pass envp (actually _dl_argv+_dl_argc+1) in r5; */ - slwi %r5,%r3,2 - add %r6,%r4,%r5 - addi %r5,%r6,4 + slwi r5,r3,2 + add r6,r4,r5 + addi r5,r6,4 /* pass the auxilary vector in r6. This is passed to us just after _envp. */ -2: lwzu %r0,4(%r6) - cmpwi %r0,0 +2: lwzu r0,4(r6) + cmpwi r0,0 bne 2b - addi %r6,%r6,4 + addi r6,r6,4 /* Pass a termination function pointer (in this case _dl_fini) in r7. */ - lwz %r7,_dl_fini@got(%r31) + lwz r7,_dl_fini@got(r31) /* Now, call the start function in r30... */ - mtctr %r30 - lwz %r26,_dl_starting_up@got(%r31) + mtctr r30 + lwz r26,_dl_starting_up@got(r31) /* Pass the stack pointer in r1 (so far so good), pointing to a NULL value. (This lets our startup code distinguish between a program linked statically, which linux will call with argc on top of the stack which will hopefully @@ -98,14 +98,14 @@ ENTRY(_start) Take the opportunity to clear LR, so anyone who accidentally returns from _start gets SEGV. Also clear the next few words of the stack. */ - li %r31,0 - stw %r31,0(%r1) - mtlr %r31 - stw %r31,4(%r1) - stw %r31,8(%r1) - stw %r31,12(%r1) + li r31,0 + stw r31,0(r1) + mtlr r31 + stw r31,4(r1) + stw r31,8(r1) + stw r31,12(r1) /* Clear _dl_starting_up. */ - stw %r31,0(%r26) + stw r31,0(r26) /* Go do it! */ bctr END(_start) |