1#ifndef ISA_INLINES_H
  2#define ISA_INLINES_H
  3
  4#include "common.h"
  5
  6#include "arm.h"
  7
  8#define UNUSED(V) (void)(V)
  9
 10#define DO_4(DIRECTIVE) \
 11	DIRECTIVE, \
 12	DIRECTIVE, \
 13	DIRECTIVE, \
 14	DIRECTIVE
 15
 16#define DO_8(DIRECTIVE) \
 17	DIRECTIVE, \
 18	DIRECTIVE, \
 19	DIRECTIVE, \
 20	DIRECTIVE, \
 21	DIRECTIVE, \
 22	DIRECTIVE, \
 23	DIRECTIVE, \
 24	DIRECTIVE
 25
 26#define DO_256(DIRECTIVE) \
 27	DO_4(DO_8(DO_8(DIRECTIVE)))
 28
 29#define DO_INTERLACE(LEFT, RIGHT) \
 30	LEFT, \
 31	RIGHT
 32
 33#define ARM_COND_EQ (cpu->cpsr.z)
 34#define ARM_COND_NE (!cpu->cpsr.z)
 35#define ARM_COND_CS (cpu->cpsr.c)
 36#define ARM_COND_CC (!cpu->cpsr.c)
 37#define ARM_COND_MI (cpu->cpsr.n)
 38#define ARM_COND_PL (!cpu->cpsr.n)
 39#define ARM_COND_VS (cpu->cpsr.v)
 40#define ARM_COND_VC (!cpu->cpsr.v)
 41#define ARM_COND_HI (cpu->cpsr.c && !cpu->cpsr.z)
 42#define ARM_COND_LS (!cpu->cpsr.c || cpu->cpsr.z)
 43#define ARM_COND_GE (!cpu->cpsr.n == !cpu->cpsr.v)
 44#define ARM_COND_LT (!cpu->cpsr.n != !cpu->cpsr.v)
 45#define ARM_COND_GT (!cpu->cpsr.z && !cpu->cpsr.n == !cpu->cpsr.v)
 46#define ARM_COND_LE (cpu->cpsr.z || !cpu->cpsr.n != !cpu->cpsr.v)
 47#define ARM_COND_AL 1
 48
 49#define ARM_SIGN(I) ((I) >> 31)
 50#define ARM_ROR(I, ROTATE) ((((uint32_t) (I)) >> ROTATE) | ((I) << (32 - ROTATE)))
 51
 52#define ARM_CARRY_FROM(M, N, D) (((uint32_t) (M) >> 31) + ((uint32_t) (N) >> 31) > ((uint32_t) (D) >> 31))
 53#define ARM_BORROW_FROM(M, N, D) (((uint32_t) (M)) >= ((uint32_t) (N)))
 54#define ARM_V_ADDITION(M, N, D) (!(ARM_SIGN((M) ^ (N))) && (ARM_SIGN((M) ^ (D))) && (ARM_SIGN((N) ^ (D))))
 55#define ARM_V_SUBTRACTION(M, N, D) ((ARM_SIGN((M) ^ (N))) && (ARM_SIGN((M) ^ (D))))
 56
 57#define ARM_WAIT_MUL(R) \
 58	if ((R & 0xFFFFFF00) == 0xFFFFFF00 || !(R & 0xFFFFFF00)) { \
 59		cpu->cycles += 1; \
 60	} else if ((R & 0xFFFF0000) == 0xFFFF0000 || !(R & 0xFFFF0000)) { \
 61		cpu->cycles += 2; \
 62	} else if ((R & 0xFF000000) == 0xFF000000 || !(R & 0xFF000000)) { \
 63		cpu->cycles += 3; \
 64	} else { \
 65		cpu->cycles += 4; \
 66	}
 67
 68#define ARM_STUB cpu->board->hitStub(cpu->board, opcode)
 69#define ARM_ILL cpu->board->hitIllegal(cpu->board, opcode)
 70
 71#define ARM_WRITE_PC \
 72	cpu->gprs[ARM_PC] = (cpu->gprs[ARM_PC] & -WORD_SIZE_ARM) + WORD_SIZE_ARM; \
 73	cpu->memory->setActiveRegion(cpu->memory, cpu->gprs[ARM_PC] - WORD_SIZE_ARM); \
 74	currentCycles += 2 + cpu->memory->activeNonseqCycles32 + cpu->memory->activePrefetchCycles32;
 75
 76#define THUMB_WRITE_PC \
 77	cpu->gprs[ARM_PC] = (cpu->gprs[ARM_PC] & -WORD_SIZE_THUMB) + WORD_SIZE_THUMB; \
 78	cpu->memory->setActiveRegion(cpu->memory, cpu->gprs[ARM_PC] - WORD_SIZE_THUMB); \
 79	currentCycles += 2 + cpu->memory->activeNonseqCycles16 + cpu->memory->activePrefetchCycles16;
 80
 81static inline int _ARMModeHasSPSR(enum PrivilegeMode mode) {
 82	return mode != MODE_SYSTEM && mode != MODE_USER;
 83}
 84
 85static inline void _ARMSetMode(struct ARMCore* cpu, enum ExecutionMode executionMode) {
 86	if (executionMode == cpu->executionMode) {
 87		return;
 88	}
 89
 90	cpu->executionMode = executionMode;
 91	switch (executionMode) {
 92	case MODE_ARM:
 93		cpu->cpsr.t = 0;
 94		break;
 95	case MODE_THUMB:
 96		cpu->cpsr.t = 1;
 97	}
 98}
 99
100static inline void _ARMReadCPSR(struct ARMCore* cpu) {
101	_ARMSetMode(cpu, cpu->cpsr.t);
102	ARMSetPrivilegeMode(cpu, cpu->cpsr.priv);
103	cpu->board->readCPSR(cpu->board);
104}
105
106#endif