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LR35902: Increment INC and DEC on double-wide registers

This commit is contained in:
Jeffrey Pfau 2016-01-15 02:46:23 -08:00
parent e96da4c7b9
commit b104a5cd1c
2 changed files with 35 additions and 8 deletions
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16
src/lr35902/emitter-lr35902.h
View File

@ -13,7 +13,7 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, NOP), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDBC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDBC_A), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCBC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDB_), \
@ -21,14 +21,14 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECBC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDC_), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDDE), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDDE_A), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCDE), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
@ -37,7 +37,7 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, JR), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECDE), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDE_), \
@ -45,7 +45,7 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, JRNZ), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDHL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDIHLA), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCHL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDH_), \
@ -53,7 +53,7 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, JRZ), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECHL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDL_), \
@ -61,7 +61,7 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, JRNC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDSP), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDDHLA), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCSP), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDHL_), \
@ -69,7 +69,7 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, JRC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECSP), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDA_), \

27
src/lr35902/isa-lr35902.c
View File

@ -364,6 +364,33 @@ DEFINE_INSTRUCTION_LR35902(LDIOA, \
cpu->executionState = LR35902_CORE_READ_PC; \
cpu->instruction = _LR35902InstructionLDIOADelay;)
#define DEFINE_INCDEC_INSTRUCTION_LR35902(REG) \
DEFINE_INSTRUCTION_LR35902(INC ## REG, \
uint16_t reg = LR35902Read ## REG (cpu); \
LR35902Write ## REG (cpu, reg + 1); \
/* TODO: Stall properly */ \
cpu->cycles += 4;) \
DEFINE_INSTRUCTION_LR35902(DEC ## REG, \
uint16_t reg = LR35902Read ## REG (cpu); \
LR35902Write ## REG (cpu, reg - 1); \
/* TODO: Stall properly */ \
cpu->cycles += 4;) \
DEFINE_INCDEC_INSTRUCTION_LR35902(BC);
DEFINE_INCDEC_INSTRUCTION_LR35902(DE);
DEFINE_INCDEC_INSTRUCTION_LR35902(HL);
DEFINE_INSTRUCTION_LR35902(INCSP,
++cpu->sp;
// TODO: Stall properly
cpu->cycles += 4;)
DEFINE_INSTRUCTION_LR35902(DECSP,
--cpu->sp;
// TODO: Stall properly
cpu->cycles += 4;)
DEFINE_INSTRUCTION_LR35902(DI, cpu->irqh.setInterrupts(cpu, false));
DEFINE_INSTRUCTION_LR35902(EI, cpu->irqh.setInterrupts(cpu, true));