diff options
Diffstat (limited to 'c/src/lib/libbsp/sh/shsim/start/start.S')
| -rw-r--r-- | c/src/lib/libbsp/sh/shsim/start/start.S | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sh/shsim/start/start.S b/c/src/lib/libbsp/sh/shsim/start/start.S new file mode 100644 index 0000000000..9b5c0798a8 --- /dev/null +++ b/c/src/lib/libbsp/sh/shsim/start/start.S @@ -0,0 +1,55 @@ + .section .text + .global start +start: + mov.l stack_k,r15 + + ! zero out bss + mov.l edata_k,r0 + mov.l end_k,r1 + mov #0,r2 +start_l: + mov.l r2,@r0 + add #4,r0 + cmp/ge r0,r1 + bt start_l + +#if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY) + mov.l set_fpscr_k, r1 + jsr @r1 + mov #0,r4 + lds r3,fpscr +#endif /* defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) */ + + ! call the mainline + mov.l boot_card_k,r0 + jsr @r0 + or r0,r0 + + ! call exit + mov r0,r4 + mov.l exit_k,r0 + jsr @r0 + or r0,r0 + + .align 2 +#if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) +set_fpscr_k: + .long ___set_fpscr +#endif /* defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(SH4_SINGLE_ONLY) */ +stack_k: + .long _stack +edata_k: + .long _edata +end_k: + .long _end +boot_card_k: + .long _boot_card +exit_k: + .long _exit + +#ifdef __ELF__ + .section .stack,"aw" +#else + .section .stack +#endif +_stack: .long 0xdeaddead |