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Diffstat (limited to 'libc/sysdeps/linux/powerpc/crt1.S')
-rw-r--r--libc/sysdeps/linux/powerpc/crt1.S44
1 files changed, 20 insertions, 24 deletions
diff --git a/libc/sysdeps/linux/powerpc/crt1.S b/libc/sysdeps/linux/powerpc/crt1.S
index 42040e2ee..916c34a4b 100644
--- a/libc/sysdeps/linux/powerpc/crt1.S
+++ b/libc/sysdeps/linux/powerpc/crt1.S
@@ -27,60 +27,56 @@
#define r7 7
#define r8 8
#define r9 9
+#define r10 10
#define r13 13
#define r31 31
#include <features.h>
- .section ".text"
+.text
.globl _start
- .type _start,@function
- .weak _init
- .weak _fini
- .type __uClibc_start_main,%function
-
-/* Stick in a dummy reference to main(), so that if an application
- * is linking when the main() function is in a static library (.a)
- * we can be sure that main() actually gets linked in */
+ .type _start,%function
+ .type _init,%function
+ .type _fini,%function
.type main,%function
+ .type __uClibc_start_main,%function
_start:
- /* Save the stack pointer, in case we're statically linked under Linux. */
- mr r9,r1
+ mr r9,r1 /* Save the stack pointer */
+ clrrwi r1,r1,4 /* Align stack ptr to 16 bytes */
+ mr r10,r1 /* Pass aligned stack ptr */
#if defined L_Scrt1
bl _GLOBAL_OFFSET_TABLE_-4@local
mflr r31
#endif
/* Set up an initial stack frame, and clear the LR. */
- clrrwi r1,r1,4
li r0,0
stwu r1,-16(r1)
mtlr r0
stw r0,0(r1)
-
/* find argc from the stack pointer */
- lwz r3,0(r9)
+ lwz r4,0(r9)
/* find argv one word offset from the stack pointer */
- addi r4,r9,4
+ addi r5,r9,4
/* find environment pointer (argv+argc+1) */
- lwz r5,0(r9)
- addi r5,r5,1
- rlwinm r5,r5,2,0,29
- add r5,r5,r4
- mr r9,r7 /* Pass _dl_fini from ldso */
+ lwz r6,0(r9)
+ addi r6,r6,1
+ rlwinm r6,r6,2,0,29
+ add r6,r6,r5
+ mr r9,r7 /* Pass _dl_fini from ldso or NULL if statically linked */
/* Ok, now run uClibc's main() -- shouldn't return */
# ifdef L_Scrt1
lwz r6,_init@got(r31)
lwz r7,_fini@got(r31)
- lwz r8,main@got(r31)
+ lwz r3,main@got(r31)
b __uClibc_start_main@plt
# else
lis r6,_init@ha # load top 16 bits
addi r6,r6,_init@l # load bottom 16 bits
- lis r7,_fini@ha # load top 16 bits of &msg
+ lis r7,_fini@ha # load top 16 bits
addi r7,r7,_fini@l # load bottom 16 bits
- lis r8,main@ha # load top 16 bits of &msg
- addi r8,r8,main@l # load bottom 16 bits
+ lis r3,main@ha # load top 16 bits
+ addi r3,r3,main@l # load bottom 16 bits
b __uClibc_start_main
# endif
.size _start,.-_start