rm48x50: optimize a BEQ

Use condition flag in the ORR. This could eliminate a BEQ.

rm48x50: optimize a BEQ
Use condition flag in the ORR. This could eliminate a BEQ.
f08df088 · Grissiom · 19fe6251 · f08df088
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Showing with 1 addition and 3 deletion

libcpu/arm/rm48x50/context_ccs.asm libcpu/arm/rm48x50/context_ccs.asm +1 -3

未找到文件。
--- a/libcpu/arm/rm48x50/context_ccs.asm
+++ b/libcpu/arm/rm48x50/context_ccs.asm
@@ -53,10 +53,8 @@ rt_hw_context_switch
    MRS     r4, cpsr
    TST     lr, #0x01
-    BEQ     _ARM_MODE
+    ORRNE   r4, r4, #0x20       ; it's thumb code
-    ORR     r4, r4, #0x20       ; it's thumb code
-_ARM_MODE
    STMFD   sp!, {r4}           ; push cpsr
    STR     sp, [r0]            ; store sp in preempted tasks TCB