diff options
Diffstat (limited to 'libc/sysdeps/linux/sh/crt0.S')
| -rw-r--r-- | libc/sysdeps/linux/sh/crt0.S | 39 |
1 files changed, 14 insertions, 25 deletions
diff --git a/libc/sysdeps/linux/sh/crt0.S b/libc/sysdeps/linux/sh/crt0.S index 149fd21cd..d7b54299f 100644 --- a/libc/sysdeps/linux/sh/crt0.S +++ b/libc/sysdeps/linux/sh/crt0.S @@ -42,49 +42,38 @@ ... NULL */ - .text .globl _start - + .type _start,@function + .size _start,_start_end - _start _start: - /* Clear the frame pointer since this is the outermost frame. */ + /* Clear the frame pointer since this is the outermost frame. (in delay slot) */ mov #0, r14 /* Pop argc off the stack and save a pointer to argv */ mov.l @r15+,r4 mov r15, r5 - /* set up the value for the environment pointer - r6 = (argc+1)*4+argv - */ + /* + * Setup the value for the environment pointer: + * r6 = (argc + 1) * 4 + * r6 += argv (in delay slot) + */ mov r4,r6 add #1,r6 shll2 r6 - add r5,r6 - - ! Clear BSS area - mov.l 3f, r1 - add #4, r1 - mov.l 4f, r2 - mov #0, r0 -9: cmp/hs r2, r1 - bf/s 9b ! while (r1 < r2) - mov.l r0,@-r2 /* call main */ - mov.l L_main,r1 - jsr @r1 - nop + mov.l L_main, r0 + jsr @r0 - /* should never get here....*/ - mov.l L_abort,r1 - jsr @r1 + /* We should not get here. */ + mov.l L_abort, r0 + jsr @r0 nop - +_start_end: .align 2 -3: .long __bss_start -4: .long _end L_main: .long __uClibc_main |