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Diffstat (limited to 'libc/sysdeps/linux/bfin/crt1.S')
-rw-r--r--libc/sysdeps/linux/bfin/crt1.S50
1 files changed, 24 insertions, 26 deletions
diff --git a/libc/sysdeps/linux/bfin/crt1.S b/libc/sysdeps/linux/bfin/crt1.S
index 7b6a99de0..dd30370b3 100644
--- a/libc/sysdeps/linux/bfin/crt1.S
+++ b/libc/sysdeps/linux/bfin/crt1.S
@@ -6,7 +6,7 @@
*/
/* When we enter this piece of code, the user stack looks like this:
-* argc argument counter (integer)
+* [SP] argc argument counter (integer)
* argv[0] program name (pointer)
* argv[1...N] program args (pointers)
* NULL
@@ -15,8 +15,9 @@
* When we are done here, we want
* R0=argc
-* R1=*argv[0]
-* R2=*envp[0]
+* R1=argv
+* R2=__init
+* SP=__fini
*/
#include <features.h>
@@ -28,31 +29,20 @@
.global ___uClibc_main;
.type ___uClibc_main,STT_FUNC;
+#define __UCLIBC_CTOR_DTOR__
#if defined(__UCLIBC_CTOR_DTOR__)
-.type __init,%function
-.type __fini,%function
-#else
-.weak __init
-.weak __fini
+.weak __init;
+.weak __fini;
#endif
-/*
- When we enter, our stack looks like:
- [ SP ]
- [argc][argv]...
-
- Call ___uClibc_main(argc, argv, __init, __fini)
- R0 R1 R2 stack
-
- Before we call main, we want:
- [ SP ]
- [fini][argc][argv]
-*/
-
__start:
-/* clear the frame pointer */
+/* clear the frame pointer and the L registers. */
FP = 0;
+ L0 = 0;
+ L1 = 0;
+ L2 = 0;
+ L3 = 0;
/* Load register R0 (argc) from the stack to its final resting place */
P0 = SP;
@@ -61,14 +51,22 @@ __start:
/* Copy argv pointer into R1 */
R1 = P0;
+#if defined(__UCLIBC_CTOR_DTOR__)
/* Load __init into R2 */
- R2 = __init;
+ R2.H = __init;
+ R2.L = __init;
/* Load __fini onto the stack */
- P0 = __fini;
- [SP--] = P0;
+ SP += -16;
+ R3.H = __fini;
+ R3.L = __fini;
+ [SP+12] = R3;
+#else
+/* Just fixup the stack */
+ sp += -12;
+#endif
/* Ok, now run uClibc's main() -- shouldn't return */
- sp += -8;
jump.l ___uClibc_main;
+
.size __start,.-__start