ShuriZma
/
mgba
mirror of https://github.com/mgba-emu/mgba.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

LR35902: Implement INC/DEC

This commit is contained in:
Jeffrey Pfau 2016-01-15 16:01:22 -08:00
parent 3603958e02
commit cbc54ca09a
2 changed files with 73 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
src/lr35902/emitter-lr35902.h
View File

@ -14,23 +14,23 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, LDBC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDBC_A), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCBC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDB_), \
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, INCC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECC), \
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, INCDE), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCD), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECD), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDD_), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
@ -38,40 +38,40 @@
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, INCE), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECE), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDE_), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, JRNZ), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDHL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDIHLA), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCHL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCH), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECH), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDH_), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, JRZ), \
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, INCL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDL_), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, JRNC), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDSP), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDDHLA), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INCSP), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, INC_HL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DEC_HL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDHL_), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, JRC), \
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, INCA), \
DECLARE_INSTRUCTION_LR35902(EMITTER, DECA), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDA_), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDB_B), \
@ -243,7 +243,7 @@
DECLARE_INSTRUCTION_LR35902(EMITTER, AND), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, JPHL), \
DECLARE_INSTRUCTION_LR35902(EMITTER, LDIA), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \

60
src/lr35902/isa-lr35902.c
View File

@ -43,6 +43,10 @@ DEFINE_INSTRUCTION_LR35902(JPDelay,
DEFINE_CONDITIONAL_INSTRUCTION_LR35902(JP);
DEFINE_INSTRUCTION_LR35902(JPHL,
cpu->pc = LR35902ReadHL(cpu);
cpu->memory.setActiveRegion(cpu, cpu->pc);)
DEFINE_INSTRUCTION_LR35902(JRFinish,
if (cpu->condition) {
cpu->pc += (int8_t) cpu->bus;
@ -360,7 +364,7 @@ DEFINE_INSTRUCTION_LR35902(LDIOA, \
cpu->executionState = LR35902_CORE_READ_PC; \
cpu->instruction = _LR35902InstructionLDIOADelay;)
#define DEFINE_INCDEC_INSTRUCTION_LR35902(REG) \
#define DEFINE_INCDEC_WIDE_INSTRUCTION_LR35902(REG) \
DEFINE_INSTRUCTION_LR35902(INC ## REG, \
uint16_t reg = LR35902Read ## REG (cpu); \
LR35902Write ## REG (cpu, reg + 1); \
@ -370,9 +374,57 @@ DEFINE_INSTRUCTION_LR35902(LDIOA, \
LR35902Write ## REG (cpu, reg - 1); \
cpu->executionState = LR35902_CORE_STALL;)
DEFINE_INCDEC_INSTRUCTION_LR35902(BC);
DEFINE_INCDEC_INSTRUCTION_LR35902(DE);
DEFINE_INCDEC_INSTRUCTION_LR35902(HL);
DEFINE_INCDEC_WIDE_INSTRUCTION_LR35902(BC);
DEFINE_INCDEC_WIDE_INSTRUCTION_LR35902(DE);
DEFINE_INCDEC_WIDE_INSTRUCTION_LR35902(HL);
#define DEFINE_INC_INSTRUCTION_LR35902(NAME, OPERAND) \
DEFINE_INSTRUCTION_LR35902(INC ## NAME, \
int diff = OPERAND + 1; \
OPERAND = diff; \
cpu->f.n = 0; \
cpu->f.z = !diff; \
/* TODO: Find explanation of H flag */)
#define DEFINE_DEC_INSTRUCTION_LR35902(NAME, OPERAND) \
DEFINE_INSTRUCTION_LR35902(DEC ## NAME, \
int diff = OPERAND - 1; \
OPERAND = diff; \
cpu->f.n = 1; \
cpu->f.z = !diff; \
/* TODO: Find explanation of H flag */)
DEFINE_ALU_INSTRUCTION_LR35902_NOHL(INC);
DEFINE_ALU_INSTRUCTION_LR35902_NOHL(DEC);
DEFINE_INSTRUCTION_LR35902(INC_HLDelay,
int diff = cpu->bus + 1;
cpu->bus = diff;
cpu->f.n = 0;
cpu->f.z = !diff;
/* TODO: Find explanation of H flag */
cpu->instruction = _LR35902InstructionNOP;
cpu->executionState = LR35902_CORE_MEMORY_STORE;)
DEFINE_INSTRUCTION_LR35902(INC_HL,
cpu->index = LR35902ReadHL(cpu);
cpu->instruction = _LR35902InstructionINC_HLDelay;
cpu->executionState = LR35902_CORE_MEMORY_LOAD;)
DEFINE_INSTRUCTION_LR35902(DEC_HLDelay,
int diff = cpu->bus - 1;
cpu->bus = diff;
cpu->f.n = 1;
cpu->f.z = !diff;
/* TODO: Find explanation of H flag */
cpu->instruction = _LR35902InstructionNOP;
cpu->executionState = LR35902_CORE_MEMORY_STORE;)
DEFINE_INSTRUCTION_LR35902(DEC_HL,
cpu->index = LR35902ReadHL(cpu);
cpu->instruction = _LR35902InstructionDEC_HLDelay;
cpu->executionState = LR35902_CORE_MEMORY_LOAD;)
DEFINE_INSTRUCTION_LR35902(INCSP,
++cpu->sp;