diff options
| author | PikalaxALT <pikalaxalt@gmail.com> | 2017-12-15 09:38:53 -0500 |
|---|---|---|
| committer | PikalaxALT <pikalaxalt@gmail.com> | 2017-12-15 09:39:34 -0500 |
| commit | f95a4a932476be2ba99e2fd081e8d2bc6ea12813 (patch) | |
| tree | 75f67192cb2d7b7b575c94edda318e475239b63c /newlib/libc/sys/h8300hms/crt0.S | |
| parent | f60aca96985e68c7d8a52eb7bc955fb80e132f73 (diff) | |
Import newlib and create makefile
Diffstat (limited to 'newlib/libc/sys/h8300hms/crt0.S')
| -rw-r--r-- | newlib/libc/sys/h8300hms/crt0.S | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/newlib/libc/sys/h8300hms/crt0.S b/newlib/libc/sys/h8300hms/crt0.S new file mode 100644 index 0000000..94a4e29 --- /dev/null +++ b/newlib/libc/sys/h8300hms/crt0.S @@ -0,0 +1,69 @@ +; h8/300 and h8/300h start up file. + +#ifdef __H8300__ + + .section .text + .global _start +_start: + mov.w #_stack,sp + mov.w #_edata,r0 + mov.w #_end,r1 + mov.w #0,r2 +.loop: mov.w r2,@r0 + adds #2,r0 + cmp r1,r0 + blo .loop + jsr @___main + jsr @_main + jsr @_exit + + .section .stack +_stack: .word 1 + +#endif + +#ifdef __H8300H__ + + .h8300h + .section .text + .global _start +_start: + mov.l #_stack,sp + mov.l #_edata,er0 + mov.l #_end,er1 + mov.w #0,r2 ; not sure about alignment requirements +.loop: mov.w r2,@er0 ; playing it safe for now + adds #2,er0 + cmp.l er1,er0 + blo .loop + jsr @___main + jsr @_main + jsr @_exit + + .section .stack +_stack: .long 1 + +#endif + +#ifdef __H8300S__ + + .h8300s + .section .text + .global _start +_start: + mov.l #_stack,sp + mov.l #_edata,er0 + mov.l #_end,er1 + mov.w #0,r2 ; not sure about alignment requirements +.loop: mov.w r2,@er0 ; playing it safe for now + adds #2,er0 + cmp.l er1,er0 + blo .loop + jsr @___main + jsr @_main + jsr @_exit + + .section .stack +_stack: .long 1 + +#endif |