first draft; needs tests

master
Clyne 3 years ago
parent 6a62488e15
commit 67f3a6c989

2
.gitignore vendored

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*.a
*.o

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CROSS :=
CC := $(CROSS)gcc
CFLAGS := -Os -ggdb -g3 \
-Wall -Wextra -pedantic -Werror
CSRC := $(wildcard src/*.c)
COBJ := $(patsubst %.c,%.o,$(CSRC))
all: lib430core.a
clean:
@echo " CLEAN"
@rm -f lib430core.a $(COBJ)
lib430core.a: $(COBJ)
@echo " AR " $@
@$(CROSS)ar rc $@ $(COBJ)
@$(CROSS)size -t $@
.c.o:
@echo " CC " $<
@$(CC) $(CFLAGS) -c $< -o $@

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SECTIONS {
. = 0x0000;
.text : {
* (.text);
. = ALIGN(8);
* (.rodata);
}
. = ALIGN(8);
.data : {
* (.data);
. = ALIGN(8);
* (.bss);
}
}

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#include "core.h"
#include <stdint.h>
#define MSP430_SR_C (1 << 0)
#define MSP430_SR_Z (1 << 1)
#define MSP430_SR_N (1 << 2)
#define MSP430_SR_V (1 << 8)
// r0 = pc
// r1 = sp
// r2 = sr
static int msp430_do_cycle_jump(msp430_t *state, uint16_t opcode);
int msp430_do_cycle_single_operand(msp430_t *state, uint16_t opcode);
int msp430_do_cycle_dual_operand(msp430_t *state, uint16_t opcode);
int msp430_do_cycle_single_operand_byte(msp430_t *state, uint16_t opcode);
int msp430_do_cycle_dual_operand_byte(msp430_t *state, uint16_t opcode);
uint16_t *msp430_do_cycle_get_single_operand(msp430_t *state, uint16_t opcode);
uint16_t *msp430_do_cycle_get_source_operand(msp430_t *state, uint16_t opcode);
uint16_t *msp430_do_cycle_get_dest_operand(msp430_t *state, uint16_t opcode);
static inline int msp430_get_opcode_bw(uint16_t opcode);
void msp430_init_state(msp430_t *state, void *mem)
{
for (int i = 0; i < 16; ++i)
state->reg[i] = 0;
state->mem = mem;
}
int msp430_do_cycle(msp430_t *state)
{
uint16_t pc = state->reg[0];
uint16_t opcode = *((uint16_t *)(state->mem + pc));
// Check for program end...
if (opcode == 0x4130 && state->reg[1] == 0)
return 1;
state->reg[0] = pc + 2;
int ret;
if ((opcode & 0xE000) == 0x2000) {
ret = msp430_do_cycle_jump(state, opcode);
} else {
int bw = msp430_get_opcode_bw(opcode);
if (bw == 0) {
if ((opcode & 0xFC00) == 0x1000)
ret = msp430_do_cycle_single_operand(state, opcode);
else
ret = msp430_do_cycle_dual_operand(state, opcode);
} else {
if ((opcode & 0xFC00) == 0x1000)
ret = msp430_do_cycle_single_operand_byte(state, opcode);
else
ret = msp430_do_cycle_dual_operand_byte(state, opcode);
}
}
return ret;
}
static void msp430_jump_to_offset(msp430_t *state, uint16_t opcode)
{
uint16_t addr = opcode & 0x3FF;
if (addr & (1 << 9))
addr |= 0xFC00;
int16_t saddr = (int16_t)addr * 2;
state->reg[0] += saddr;
}
int msp430_do_cycle_jump(msp430_t *state, uint16_t opcode)
{
// PC to become PC + ((opcode & 0x3FF) << 1)
switch ((opcode & 0x01C0) >> 10) {
case 0:
// JNE/JZ
if ((state->reg[2] & MSP430_SR_Z) == 0)
msp430_jump_to_offset(state, opcode);
break;
case 1:
// JEQ/JZ
if ((state->reg[2] & MSP430_SR_Z) == MSP430_SR_Z)
msp430_jump_to_offset(state, opcode);
break;
case 2:
// JNC/JLO
if ((state->reg[2] & MSP430_SR_C) == 0)
msp430_jump_to_offset(state, opcode);
break;
case 3:
// JC/JHS
if ((state->reg[2] & MSP430_SR_C) == MSP430_SR_C)
msp430_jump_to_offset(state, opcode);
break;
case 4:
// JN
if ((state->reg[2] & MSP430_SR_N) == MSP430_SR_N)
msp430_jump_to_offset(state, opcode);
break;
case 5: {
// JGE
uint16_t flags = state->reg[2] & (MSP430_SR_N | MSP430_SR_V);
if (flags == 0 || flags == (MSP430_SR_N | MSP430_SR_V))
msp430_jump_to_offset(state, opcode);
break; }
case 6: {
// JL
uint16_t flags = state->reg[2] & (MSP430_SR_N | MSP430_SR_V);
if (flags == MSP430_SR_N || flags == MSP430_SR_V)
msp430_jump_to_offset(state, opcode);
break; }
case 7:
// JMP
msp430_jump_to_offset(state, opcode);
break;
default:
return -1;
}
return 0;
}
uint16_t *msp430_do_cycle_get_operand(msp430_t *state, int AS, int BW, int SOURCE)
{
static uint16_t constants[6] = {
0, 1, 2, -1, 4, 8
};
if (SOURCE == 0) {
if (AS == 1) {
// Operand at PC + X
// X = word after PC
uint16_t offset = *((uint16_t *)(state->mem + state->reg[0]));
uint16_t *ret = (uint16_t *)(state->mem + state->reg[0] + offset);
state->reg[0] += 2;
return ret;
} else if (AS == 3) {
// Operand is X
uint16_t *ret = (uint16_t *)(state->mem + state->reg[0]);
state->reg[0] += 2;
return ret;
}
}
if (SOURCE == 2) {
switch (AS) {
case 0:
// R2
return &state->reg[2];
break;
case 1: {
// Operand at X
uint16_t offset = *((uint16_t *)(state->mem + state->reg[0]));
uint16_t *ret = (uint16_t *)(state->mem + offset);
state->reg[0] += 2;
return ret;
break; }
case 2:
return &constants[4];
break;
case 3:
return &constants[5];
break;
}
} else if (SOURCE == 3) {
// Constants
return &constants[AS];
} else {
switch (AS) {
case 0:
// Register
return &state->reg[SOURCE];
break;
case 1: {
// Operand at Rn + X
uint16_t offset = *((uint16_t *)(state->mem + state->reg[0]));
uint16_t *ret = (uint16_t *)(state->mem + state->reg[SOURCE] + offset);
state->reg[0] += 2;
return ret;
break; }
case 2:
// Operand at Rn
return (uint16_t *)(state->mem + state->reg[SOURCE]);
break;
case 3: {
// Operand at Rn, increment Rn
uint16_t *ret = (uint16_t *)(state->mem + state->reg[SOURCE]);
state->reg[SOURCE] += BW ? 1 : 2;
return ret;
break; }
}
}
return 0; // Failed...
}
inline int msp430_get_opcode_bw(uint16_t opcode)
{
return opcode & (1 << 6);
}
uint16_t *msp430_do_cycle_get_single_operand(msp430_t *state, uint16_t opcode)
{
return msp430_do_cycle_get_operand(state,
/* AS */ (opcode & 0x30) >> 4,
/* BW */ msp430_get_opcode_bw(opcode),
/* SOURCE */ (opcode & 0xF));
}
uint16_t *msp430_do_cycle_get_source_operand(msp430_t *state, uint16_t opcode)
{
return msp430_do_cycle_get_operand(state,
/* AS */ (opcode & 0x30) >> 4,
/* BW */ msp430_get_opcode_bw(opcode),
/* SOURCE */ (opcode & 0xF00) >> 8);
}
uint16_t *msp430_do_cycle_get_dest_operand(msp430_t *state, uint16_t opcode)
{
int AD = opcode & 0x80;
int DEST = opcode & 0xF;
if (AD == 0) {
// Byte operation? Clear MSB.
if (msp430_get_opcode_bw(opcode) == 0) {
return &state->reg[DEST];
} else {
uint16_t *ret = &state->reg[DEST];
*ret &= 0xFF;
return ret;
}
} else {
if (DEST == 0) {
// dest at PC + X
uint16_t offset = *((uint16_t *)(state->mem + state->reg[0]));
uint16_t *ret = (uint16_t *)(state->mem + state->reg[0] + offset);
state->reg[0] += 2;
return ret;
} else if (DEST == 2) {
// dest at X
uint16_t offset = *((uint16_t *)(state->mem + state->reg[0]));
uint16_t *ret = (uint16_t *)(state->mem + offset);
state->reg[0] += 2;
return ret;
} else {
// dest at Rn + X
uint16_t offset = *((uint16_t *)(state->mem + state->reg[0]));
uint16_t *ret = (uint16_t *)(state->mem + state->reg[DEST] + offset);
state->reg[0] += 2;
return ret;
}
}
return 0;
}

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#ifndef CORE_H
#define CORE_H
#include <stdint.h>
typedef struct {
uint16_t reg[16];
uint8_t *mem;
} msp430_t;
void msp430_init_state(msp430_t *state, void *mem);
int msp430_do_cycle(msp430_t *state);
#endif // CORE_H

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#include <stdint.h>
#define MSP430_SR_C (1 << 0)
#define MSP430_SR_Z (1 << 1)
#define MSP430_SR_N (1 << 2)
#define MSP430_SR_V (1 << 8)
// r0 = pc
// r1 = sp
// r2 = sr
typedef struct {
uint16_t reg[16];
uint8_t *mem;
} msp430_t;
extern uint16_t *msp430_do_cycle_get_single_operand(msp430_t *state, uint16_t opcode);
extern uint16_t *msp430_do_cycle_get_source_operand(msp430_t *state, uint16_t opcode);
extern uint16_t *msp430_do_cycle_get_dest_operand(msp430_t *state, uint16_t opcode);
int msp430_do_cycle_single_operand_byte(msp430_t *state, uint16_t opcode)
{
uint8_t *operand = (uint8_t *)msp430_do_cycle_get_single_operand(state, opcode);
if (operand == 0)
return -1;
switch ((opcode & 0x0380) >> 7) {
case 0: {
// RRC
uint8_t res = *operand;
uint16_t sr = 0;
if (res & 1)
sr |= MSP430_SR_C;
res >>= 1;
if (state->reg[2] & MSP430_SR_C)
res |= 0x80;
if (res == 0)
sr |= MSP430_SR_Z;
if ((int8_t)res < 0)
sr |= MSP430_SR_N;
*operand = res;
state->reg[2] = sr;
break; }
case 2: {
// RRA
uint8_t res = *operand;
uint16_t sr = 0;
if (res & 1)
sr |= MSP430_SR_C;
res >>= 1;
if (res == 0)
sr |= MSP430_SR_Z;
if ((int8_t)res < 0)
sr |= MSP430_SR_N;
*operand = res;
state->reg[2] = sr;
break; }
case 4: {
// PUSH
uint16_t sp = state->reg[1] - 2;
*((uint16_t *)(state->mem + sp)) = *operand;
state->reg[1] = sp;
break; }
default:
return -1;
break;
}
return 0;
}
int msp430_do_cycle_dual_operand_byte(msp430_t *state, uint16_t opcode)
{
uint8_t *src = (uint8_t *)msp430_do_cycle_get_source_operand(state, opcode);
uint8_t *dst = (uint8_t *)msp430_do_cycle_get_dest_operand(state, opcode);
if (src == 0 || dst == 0)
return -1;
switch ((opcode & 0xF000) >> 12) {
case 4:
// MOV
*dst = *src;
break;
case 5: {
// ADD
uint16_t res = *src + *dst;
uint16_t sr = 0;
if ((int8_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFF00) != 0)
sr |= MSP430_SR_C;
if (((*src & 0x80) ^ (*src & 0x80)) == 0 && (*src & 0x80) != (res & 0x80))
sr |= MSP430_SR_V;
*dst = res & 0xFF;
state->reg[2] = sr;
break; }
case 6: {
// ADDC
uint16_t res = *src + *dst + (state->reg[2] & MSP430_SR_C);
uint16_t sr = 0;
if ((int8_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFF00) != 0)
sr |= MSP430_SR_C;
if (((*src & 0x80) ^ (*src & 0x80)) == 0 && (*src & 0x80) != (res & 0x80))
sr |= MSP430_SR_V;
*dst = res & 0xFF;
state->reg[2] = sr;
break; }
case 7: {
// SUBC
uint16_t res = *dst + ~(*src) + (state->reg[2] & MSP430_SR_C);
uint16_t sr = 0;
if ((int8_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFF00) != 0)
sr |= MSP430_SR_C;
if (((*src & 0x80) ^ (*src & 0x80)) == 0 && (*src & 0x80) != (res & 0x80))
sr |= MSP430_SR_V;
*dst = res & 0xFF;
state->reg[2] = sr;
break; }
case 8: {
// SUB
uint16_t res = *dst + ~(*src) + 1;
uint16_t sr = 0;
if ((int8_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFF00) != 0) // TODO confirm
sr |= MSP430_SR_C;
if (((*src & 0x80) ^ (*src & 0x80)) == 0 && (*src & 0x80) != (res & 0x80))
sr |= MSP430_SR_V;
*dst = res & 0xFF;
state->reg[2] = sr;
break; }
case 9: {
// CMP
uint16_t res = *dst + ~(*src) + 1;
uint16_t sr = 0;
if ((int8_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFF00) != 0)
sr |= MSP430_SR_C;
if (((*src & 0x80) ^ (*src & 0x80)) == 0 && (*src & 0x80) != (res & 0x80))
sr |= MSP430_SR_V;
state->reg[2] = sr;
break; }
case 10:
// DADD TODO
break;
case 11: {
// BIT
uint8_t res = *dst & *src;
uint16_t sr = 0;
if (res & 0x80)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if (res != 0)
sr |= MSP430_SR_C;
state->reg[2] = sr;
break; }
case 12:
// BIC
*dst &= ~(*src);
break;
case 13:
// BIS
*dst |= *src;
break;
case 14: {
// XOR
uint8_t res = *dst ^ *src;
uint16_t sr = 0;
if (res & 0x80)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if (res != 0)
sr |= MSP430_SR_C;
if ((*dst & 0x80) && (*src & 0x80))
sr |= MSP430_SR_V;
*dst = res;
state->reg[2] = sr;
break; }
case 15: {
// AND
uint8_t res = *dst & *src;
uint16_t sr = 0;
if (res & 0x80)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if (res != 0)
sr |= MSP430_SR_C;
*dst = res;
state->reg[2] = sr;
break; }
default:
return -1;
}
return 0;
}

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#include <stdint.h>
#define MSP430_SR_C (1 << 0)
#define MSP430_SR_Z (1 << 1)
#define MSP430_SR_N (1 << 2)
#define MSP430_SR_V (1 << 8)
// r0 = pc
// r1 = sp
// r2 = sr
typedef struct {
uint16_t reg[16];
uint8_t *mem;
} msp430_t;
extern uint16_t *msp430_do_cycle_get_single_operand(msp430_t *state, uint16_t opcode);
extern uint16_t *msp430_do_cycle_get_source_operand(msp430_t *state, uint16_t opcode);
extern uint16_t *msp430_do_cycle_get_dest_operand(msp430_t *state, uint16_t opcode);
int msp430_do_cycle_single_operand(msp430_t *state, uint16_t opcode)
{
uint16_t *operand = msp430_do_cycle_get_single_operand(state, opcode);
if (operand == 0)
return -1;
switch ((opcode & 0x0380) >> 7) {
case 0: {
// RRC
uint16_t res = *operand;
uint16_t sr = 0;
if (res & 1)
sr |= MSP430_SR_C;
res >>= 1;
if (state->reg[2] & MSP430_SR_C)
res |= 0x8000;
if (res == 0)
sr |= MSP430_SR_Z;
if ((int16_t)res < 0)
sr |= MSP430_SR_N;
*operand = res;
state->reg[2] = sr;
break; }
case 1: {
// SWPB
uint16_t swapped = ((*operand & 0xFF00) >> 8) | ((*operand & 0x00FF) << 8);
*operand = swapped;
break; }
case 2: {
// RRA
uint16_t res = *operand;
uint16_t sr = 0;
if (res & 1)
sr |= MSP430_SR_C;
res >>= 1;
if (res == 0)
sr |= MSP430_SR_Z;
if ((int16_t)res < 0)
sr |= MSP430_SR_N;
*operand = res;
state->reg[2] = sr;
break; }
case 3: {
// SXT
uint16_t sr = 0;
uint16_t res = (*operand & 0x80) ? (*operand | 0xFF00) : *operand;
if ((int16_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if (res != 0)
sr |= MSP430_SR_C;
*operand = res;
state->reg[2] = sr;
break; }
case 4: {
// PUSH
uint16_t sp = state->reg[1] - 2;
*((uint16_t *)(state->mem + sp)) = *operand;
state->reg[1] = sp;
break; }
case 5: {
// CALL
uint16_t sp = state->reg[1] - 2;
*((uint16_t *)(state->mem + sp)) = state->reg[0];
state->reg[0] = *operand;
state->reg[1] = sp;
break; }
case 6: {
// RETI
uint16_t sp = state->reg[1];
state->reg[2] = *((uint16_t *)(state->mem + sp));
state->reg[0] = *((uint16_t *)(state->mem + sp + 2));
state->reg[1] = sp + 4;
break; }
default:
return -1;
break;
}
return 0;
}
int msp430_do_cycle_dual_operand(msp430_t *state, uint16_t opcode)
{
uint16_t *src = msp430_do_cycle_get_source_operand(state, opcode);
uint16_t *dst = msp430_do_cycle_get_dest_operand(state, opcode);
if (src == 0 || dst == 0)
return -1;
switch ((opcode & 0xF000) >> 12) {
case 4:
// MOV
*dst = *src;
break;
case 5: {
// ADD
uint32_t res = *src + *dst;
uint16_t sr = 0;
if ((int16_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFFFF0000) != 0)
sr |= MSP430_SR_C;
if (((*src & 0x8000) ^ (*src & 0x8000)) == 0 && (*src & 0x8000) != (res & 0x8000))
sr |= MSP430_SR_V;
*dst = (uint16_t)res;
state->reg[2] = sr;
break; }
case 6: {
// ADDC
uint32_t res = *src + *dst + (state->reg[2] & MSP430_SR_C);
uint16_t sr = 0;
if ((int16_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFFFF0000) != 0)
sr |= MSP430_SR_C;
if (((*src & 0x8000) ^ (*src & 0x8000)) == 0 && (*src & 0x8000) != (res & 0x8000))
sr |= MSP430_SR_V;
*dst = (uint16_t)res;
state->reg[2] = sr;
break; }
case 7: {
// SUBC
uint32_t res = *dst + ~(*src) + (state->reg[2] & MSP430_SR_C);
uint16_t sr = 0;
if ((int16_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFFFF0000) != 0)
sr |= MSP430_SR_C;
if (((*src & 0x8000) ^ (*src & 0x8000)) == 0 && (*src & 0x8000) != (res & 0x8000))
sr |= MSP430_SR_V;
*dst = (uint16_t)res;
state->reg[2] = sr;
break; }
case 8: {
// SUB
uint32_t res = *dst + ~(*src) + 1;
uint16_t sr = 0;
if ((int16_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFFFF0000) != 0) // TODO confirm
sr |= MSP430_SR_C;
if (((*src & 0x8000) ^ (*src & 0x8000)) == 0 && (*src & 0x8000) != (res & 0x8000))
sr |= MSP430_SR_V;
*dst = (uint16_t)res;
state->reg[2] = sr;
break; }
case 9: {
// CMP
uint32_t res = *dst + ~(*src) + 1;
uint16_t sr = 0;
if ((int16_t)res < 0)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if ((res & 0xFFFF0000) != 0)
sr |= MSP430_SR_C;
if (((*src & 0x8000) ^ (*src & 0x8000)) == 0 && (*src & 0x8000) != (res & 0x8000))
sr |= MSP430_SR_V;
state->reg[2] = sr;
break; }
case 10:
// DADD TODO
break;
case 11: {
// BIT
uint16_t res = *dst & *src;
uint16_t sr = 0;
if (res & 0x8000)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if (res != 0)
sr |= MSP430_SR_C;
state->reg[2] = sr;
break; }
case 12:
// BIC
*dst &= ~(*src);
break;
case 13:
// BIS
*dst |= *src;
break;
case 14: {
// XOR
uint16_t res = *dst ^ *src;
uint16_t sr = 0;
if (res & 0x8000)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if (res != 0)
sr |= MSP430_SR_C;
if ((*dst & 0x8000) && (*src & 0x8000))
sr |= MSP430_SR_V;
*dst = res;
state->reg[2] = sr;
break; }
case 15: {
// AND
uint16_t res = *dst & *src;
uint16_t sr = 0;
if (res & 0x8000)
sr |= MSP430_SR_N;
if (res == 0)
sr |= MSP430_SR_Z;
if (res != 0)
sr |= MSP430_SR_C;
*dst = res;
state->reg[2] = sr;
break; }
default:
return -1;
}
return 0;
}

@ -0,0 +1,24 @@
DEBUG := #-DDEBUG
LIB430COREDIR = ..
TEST_CSRC = test.c
TEST_OUT = $(patsubst %.c,%.o,$(TEST_CSRC))
all: $(LIB430COREDIR)/lib430core.a $(TEST_OUT)
$(LIB430COREDIR)/lib430core.a:
@$(MAKE) -C ..
.c.o:
@echo "Testing" $< "..."
@msp430-elf32-gcc -T../link.ld $< -o tmp.elf -nostdlib -lgcc -lc
@msp430-elf32-objcopy -Obinary tmp.elf tmp.bin
@echo "#define TESTBIN \\" > test.h
@od -t x1 tmp.bin | awk '{for (i=2; i<=NF; i++) printf "0x" $$i ", "}' >> test.h
@printf "\n#define TESTSIZE %u \n" $$(msp430-elf32-objdump tmp.elf -Dj .text | grep -E "^\s+[0-9a-fA-F]+:" | wc -l) >> test.h
@echo >> test.h
@gcc -Os -ggdb -g3 -Wall -W -pedantic $(DEBUG) -I../src -o tmp \
core_test.c -L$(LIB430COREDIR) -l430core
@./tmp > log
@rm log tmp.elf tmp.bin tmp test.h

@ -0,0 +1,52 @@
#include "core.h"
#include "test.h"
#include <stdio.h>
//#define DEBUG
#ifdef DEBUG
static void dump_state(msp430_t *state)
{
puts("MSP430 dump state:");
printf("R0/PC: 0x%04x R1/SP: 0x%04x R2/SR: 0x%04x R3: 0x%04x\n",
state->reg[0], state->reg[1], state->reg[2], state->reg[3]);
printf("R4: 0x%04x R5: 0x%04x R6: 0x%04x R7: 0x%04x\n",
state->reg[4], state->reg[5], state->reg[6], state->reg[7]);
printf("R8: 0x%04x R9: 0x%04x R10: 0x%04x R11: 0x%04x\n",
state->reg[8], state->reg[9], state->reg[10], state->reg[11]);
printf("R12: 0x%04x R13: 0x%04x R14: 0x%04x R15: 0x%04x\n\n",
state->reg[12], state->reg[13], state->reg[14], state->reg[15]);
}
#endif // DEBUG
static uint8_t mem[0x10000] = {
TESTBIN
};
int main()
{
msp430_t state;
msp430_init_state(&state, mem);
#ifdef DEBUG
dump_state(&state);
#endif // DEBUG
int r;
do {
r = msp430_do_cycle(&state);
if (r < 0) {
printf("Failed to execute near PC=0x%04x!\n", state.reg[0]);
return 1;
//break;
}
#ifdef DEBUG
dump_state(&state);
#endif // DEBUG
} while (r != 1);
return 0;
}

@ -0,0 +1,8 @@
int main()
{
volatile int *mem = (int *)0x200;
*mem = 24;
for (int i = 0; i < 8; ++i)
*mem += 2;
return *mem;
}
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