diff options
Diffstat (limited to 'libc/sysdeps/linux/arm/crt0pic.S')
| -rw-r--r-- | libc/sysdeps/linux/arm/crt0pic.S | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/arm/crt0pic.S b/libc/sysdeps/linux/arm/crt0pic.S new file mode 100644 index 000000000..8e2257865 --- /dev/null +++ b/libc/sysdeps/linux/arm/crt0pic.S @@ -0,0 +1,74 @@ +.text
+ .align 2
+ .global __environ
+ .global _start
+ .global exit
+ .global main
+ .global __libc_init
+ .global __init_stdio
+ .global __stdio_close_all
+ .global _void_void_null_func
+
+ .type _start,%function
+ .type exit,%function
+ .type main,%function
+ .type __libc_init,%function
+ .type __init_stdio,%function
+ .type __stdio_close_all,%function
+ .type _void_void_null_func,%function
+
+
+
+@ r0 = argc
+@ r1 = argv
+@ r2 = envp
+@ sl = data segment
+
+.text
+_start:
+ @ adjust the data segment base pointer
+ ldr r3,=__data_start
+ sub sl,sl,r3
+ mov r9,sl
+
+ ldr r3, .L3
+ str r2,[r9,r3]
+ ldr r0,[sp, #0]
+ ldr r1,[sp, #4]
+ ldr r2,[sp, #8]
+
+ /* Tell libc to initialize whatever it needs */
+ bl __libc_init
+ bl __init_stdio
+ bl main
+/* ldr r0,=0 */
+ bl exit
+
+_void_void_null_func:
+ nop
+
+.weak __libc_init
+__libc_init = _void_void_null_func
+
+.weak __init_stdio
+__init_stdio = _void_void_null_func
+
+.weak __stdio_close_all
+__stdio_close_all = _void_void_null_func
+
+.align 2
+.L3:
+ .word environ
+
+
+.data
+ .align 2
+ .global __environ
+
+__environ:
+ .long 0
+
+.weak environ
+environ = __environ
+
+
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