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Refactoring: removing redundant code

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This commit is contained in:
Aaron Culliney 2014-06-07 14:10:35 -07:00
parent 23e6e0ea75
commit efc63aeb7a
1 changed files with 5 additions and 14 deletions
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19
src/x86/cpu.S
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@ -818,8 +818,7 @@ E(op_BRK)
Push(%ah)
Push(%al)
orb $(B_Flag|X_Flag), F_Reg
xorl _XAX,_XAX
movb F_Reg, %al
movzbl F_Reg, _XAX
movb SN(cpu65_flags_encode)(,_XAX,1), %al
Push(%al)
orb $I_Flag, F_Reg
@ -1153,7 +1152,6 @@ E(op_JMP_abs)
Continue
E(op_JMP_ind) // 0x6c
xorl _XAX, _XAX
GetFromPC_B
xchgb %al, %ah
GetFromPC_B
@ -1451,7 +1449,6 @@ E(op_PLA) // 0x68
---------------------------------- */
E(op_PLP) // 0x28
xorl _XAX, _XAX
Pop(%al)
movb SN(cpu65_flags_decode)(,_XAX,1), F_Reg
orb $(B_Flag|X_Flag), F_Reg
@ -1545,7 +1542,6 @@ E(op_ROR_abs_x) // 0x7e
---------------------------------- */
E(op_RTI) // 0x40
xorl _XAX, _XAX
Pop(%al)
movb SN(cpu65_flags_decode)(,_XAX,1), F_Reg
orb $(B_Flag|X_Flag), F_Reg
@ -1965,8 +1961,7 @@ E(op_WAI_65c02)
------------------------------------------------------------------------- */
continue:
xorl _XAX, _XAX
movb DebugCurrOpcode, %al
movzbl DebugCurrOpcode, _XAX
movb SN(cpu65__opcycles)(,_XAX,1), %al
addb DebugCycleCount, %al
movb %al, DebugCycleCount
@ -2006,14 +2001,12 @@ ex_irq: testb $I_Flag, F_Reg // Already interrupt
Push(%ah)
Push(%al)
orb $X_Flag, F_Reg
xorl _XAX,_XAX
movb F_Reg, %al
movzbl F_Reg, _XAX
movb SN(cpu65_flags_encode)(,_XAX,1), %al
Push(%al)
orb $(B_Flag | I_Flag), F_Reg
//andb $~D_Flag, F_Reg // AppleWin clears Decimal bit?
andl $0xFFFF, EffectiveAddr_X// HACK FIXME : there is a bug somewhere that is occasionally corrupting EffectiveAddr_X
movw $0xFFFE, EffectiveAddr // ROM interrupt vector
movl $0xFFFE, EffectiveAddr_X// HACK FIXME : there is a bug somewhere that is occasionally corrupting EffectiveAddr_X
GetFromEA_W
movw %ax, PC_Reg
xorb %ah, %ah
@ -2043,7 +2036,6 @@ E(cpu65_run)
subl $SN(apple_ii_64k), _XAX
orl _XAX, SP_Reg_X
#endif
xorl _XAX, _XAX
jmp continue1
1: movb $0, SN(emul_reinitialize)
@ -2058,11 +2050,10 @@ E(cpu65_run)
exit_cpu65_run:
// Save CPU state when returning from being called from C
xorl _XAX, _XAX
movw EffectiveAddr, DebugCurrEA
movw PC_Reg, SN(cpu65_current)
movb A_Reg, SN(cpu65_current)+2
movb F_Reg, %al
movzbl F_Reg, _XAX
movb SN(cpu65_flags_encode)(,_XAX,1), %al
movb %al, SN(cpu65_current)+3
movb X_Reg, SN(cpu65_current)+4