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Automatically exported from code.google.com/p/smileos
asm.S文件中
BIC R2, R2, #ARM_MODE_MASK 这句是疏忽吧?
应该是
AND R2, R2, #ARM_MODE_MASK
arch_switch_context:
MRS R2, CPSR
BIC R2, R2, #ARM_MODE_MASK
CMP R2, #ARM_SVC_MODE
BEQ svc_mode_ctx_save
CMP R2, #ARM_SYS_MODE
BEQ sys_mode_ctx_save
B trap_mode_ctx_save
Original issue reported on code.google.com by [email protected]
on 26 Oct 2014 at 4:23
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