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use ALTZP offset to avoid test/branch

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Aaron Culliney 2014-05-10 18:09:32 -07:00
parent 0c25ec25d6
commit 442fe390de
1 changed files with 4 additions and 4 deletions
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8
src/asm386/cpu.S
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@ -137,10 +137,10 @@
movb SN(cpu65_current)+4, X_Reg; \
movb SN(cpu65_current)+5, Y_Reg; \
movb SN(cpu65_current)+6, SP_Reg_L; \
testl $SS_ALTZP, SN(softswitches); \
jz 9f; \
orl $BANK2, SP_Reg; \
9:
movl SN(base_stackzp), %eax; \
subl $SN(apple_ii_64k), %eax; \
orl %eax, SP_Reg; \
xorl %eax, %eax;
#define BranchXCycles \
incb DebugCycleCount; /* +1 branch taken */ \