Created
July 23, 2010 18:32
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.h8300sx | |
.section .text | |
.global _switch_without_restore | |
.global _switch_with_restore | |
; void switch_without_restore(char *cur_sp, char *next_sp, function entry); | |
_switch_without_restore: | |
mov.l er6,@-er7 | |
mov.l er7,er6 | |
mov.l er0,@-er7 ; save general registers | |
mov.l er1,@-er7 | |
mov.l er2,@-er7 | |
mov.l er3,@-er7 | |
mov.l er4,@-er7 | |
mov.l er5,@-er7 | |
mov.l er6,@-er7 | |
mov.l er7,@er0 ; save SP | |
mov.l er1,er7 ; switch SP | |
jmp @er2 ; jump! | |
; void switch_without_restore(char *cur_sp, char *next_sp); | |
_switch_with_restore: | |
mov.l er6,@-er7 | |
mov.l er7,er6 | |
mov.l er0,@-er7 ; save general registers | |
mov.l er1,@-er7 | |
mov.l er2,@-er7 | |
mov.l er3,@-er7 | |
mov.l er4,@-er7 | |
mov.l er5,@-er7 | |
mov.l er6,@-er7 | |
mov.l er7,@er0 ; save SP | |
mov.l er1,er7 ; switch SP | |
mov.l @er7+,er6 ; restore general registers | |
mov.l @er7+,er5 | |
mov.l @er7+,er4 | |
mov.l @er7+,er3 | |
mov.l @er7+,er2 | |
mov.l @er7+,er1 | |
mov.l @er7+,er0 | |
rts/l er6 |
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