piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-23 22:29:39 -06:00
Code Issues Packages Projects Releases Wiki Activity

DSP: More work on dsptool. Minor bugfixes. Add some testdata for dsptool.

Browse Source 
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2993 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
hrydgard
2009-04-18 11:31:37 +00:00
parent c395b93590
commit e7e4ef4481
22 changed files with 2224 additions and 232 deletions
Download Patch File Download Diff File Expand all files Collapse all files

117
Source/Core/DSPCore/Src/disassemble.cpp
View File

@ -82,15 +82,8 @@ bool DSPDisassembler::Disassemble(int start_pc, const std::vector<u16> &code, st
fwrite(&code[0], 1, code.size() * 2, f);
fclose(f);
FILE* t = fopen(tmp2, "w");
if (!t)
return false;
bool success = DisFile(tmp1, t);
fclose(t);
File::ReadFileToString(true, tmp2, text);
return success;
// Run the two passes.
return DisFile(tmp1, 1, text) && DisFile(tmp1, 2, text);
}
char *DSPDisassembler::DisParams(const DSPOPCTemplate& opc, u16 op1, u16 op2, char *strbuf)
@ -101,31 +94,24 @@ char *DSPDisassembler::DisParams(const DSPOPCTemplate& opc, u16 op1, u16 op2, ch
if (j > 0)
buf += sprintf(buf, ", ");
u32 val;
if (opc.params[j].loc >= 1)
val = op2;
else
val = op1;
u32 val = (opc.params[j].loc >= 1) ? val = op2 : val = op1;
val &= opc.params[j].mask;
if (opc.params[j].lshift < 0)
val = val << (-opc.params[j].lshift);
else
val = val >> opc.params[j].lshift;
u32 type = opc.params[j].type;
if ((type & 0xff) == 0x10)
type &= 0xff00;
if (type & P_REG)
{
// Check for _D parameter - if so flip.
if (type == P_ACC_D) // Used to be P_ACCM_D TODO verify
val = (~val & 0x1) | ((type & P_REGS_MASK) >> 8);
else
val |= (type & P_REGS_MASK) >> 8;
type &= ~P_REGS_MASK;
}
@ -146,8 +132,12 @@ char *DSPDisassembler::DisParams(const DSPOPCTemplate& opc, u16 op1, u16 op2, ch
break;
case P_VAL:
case P_ADDR_I:
case P_ADDR_D:
if (settings_.decode_names)
{
sprintf(buf, "%s", pdname(val));
}
else
sprintf(buf, "0x%04x", val);
break;
@ -156,17 +146,19 @@ char *DSPDisassembler::DisParams(const DSPOPCTemplate& opc, u16 op1, u16 op2, ch
if (opc.params[j].size != 2)
{
if (opc.params[j].mask == 0x003f) // LSL, LSR, ASL, ASR
sprintf(buf, "#%d", (val & 0x20) ? (val | 0xFFFFFFC0) : val);
sprintf(buf, "#%d", (val & 0x20) ? (val | 0xFFFFFFC0) : val); // 6-bit sign extension
else
sprintf(buf, "#0x%02x", val);
}
else
{
sprintf(buf, "#0x%04x", val);
}
break;
case P_MEM:
if (opc.params[j].size != 2)
val = (u16)(s8)val;
val = (u16)(s16)(s8)val;
if (settings_.decode_names)
sprintf(buf, "@%s", pdname(val));
@ -185,12 +177,22 @@ char *DSPDisassembler::DisParams(const DSPOPCTemplate& opc, u16 op1, u16 op2, ch
return strbuf;
}
void DSPDisassembler::DisOpcode(const u16 *binbuf, u16 *pc, std::string *dest)
static void MakeLowerCase(char *ptr)
{
int i = 0;
while (ptr[i])
{
ptr[i] = tolower(ptr[i]);
i++;
}
}
void DSPDisassembler::DisOpcode(const u16 *binbuf, int pass, u16 *pc, std::string *dest)
{
u32 op2;
char buffer[256];
char *buf = buffer;
// Start with a space.
// Start with 8 spaces, if there's no label.
buf[0] = ' ';
buf[1] = '\0';
buf++;
@ -206,6 +208,7 @@ void DSPDisassembler::DisOpcode(const u16 *binbuf, u16 *pc, std::string *dest)
const DSPOPCTemplate *opc = NULL;
const DSPOPCTemplate *opc_ext = NULL;
// find opcode
for (int j = 0; j < opcodes_size; j++)
{
@ -222,13 +225,12 @@ void DSPDisassembler::DisOpcode(const u16 *binbuf, u16 *pc, std::string *dest)
break;
}
}
const DSPOPCTemplate fake_op = {"CW", 0x0000, 0x0000, nop, nop, 1, 1, {{P_VAL, 2, 0, 0, 0xffff}}, NULL, NULL,};
if (!opc)
opc = &fake_op;
bool extended;
if (opc->size & P_EXT && op1 & 0x00ff)
if ((opc->size & P_EXT) && (op1 & 0x00ff))
extended = true;
else
extended = false;
@ -250,52 +252,52 @@ void DSPDisassembler::DisOpcode(const u16 *binbuf, u16 *pc, std::string *dest)
// printing
if (settings_.show_pc)
sprintf(buf, "%04x ", *pc);
buf += sprintf(buf, "%04x ", *pc);
buf += strlen(buf);
u32 op2;
// Size 2 - the op has a large immediate.
if ((opc->size & ~P_EXT) == 2)
{
op2 = binbuf[*pc + 1];
if (settings_.show_hex)
sprintf(buf, "%04x %04x ", op1, op2);
buf += sprintf(buf, "%04x %04x ", op1, op2);
}
else
{
op2 = 0;
if (settings_.show_hex)
sprintf(buf, "%04x ", op1);
buf += sprintf(buf, "%04x ", op1);
}
buf += strlen(buf);
char tmpbuf[20];
char opname[20];
strcpy(opname, opc->name);
if (settings_.lower_case_ops)
MakeLowerCase(opname);
char ext_buf[20];
if (extended)
sprintf(tmpbuf, "%s%c%s", opc->name, settings_.ext_separator, opc_ext->name);
sprintf(ext_buf, "%s%c%s", opname, settings_.ext_separator, opc_ext->name);
else
sprintf(tmpbuf, "%s", opc->name);
sprintf(ext_buf, "%s", opname);
if (settings_.lower_case_ops)
MakeLowerCase(ext_buf);
if (settings_.print_tabs)
sprintf(buf, "%s\t", tmpbuf);
buf += sprintf(buf, "%s\t", ext_buf);
else
sprintf(buf, "%-12s", tmpbuf);
buf += strlen(buf);
buf += sprintf(buf, "%-12s", ext_buf);
if (opc->param_count > 0)
DisParams(*opc, op1, op2, buf);
buf += strlen(buf);
// Handle opcode extension.
if (extended)
{
if (opc->param_count > 0)
buf += sprintf(buf, " ");
buf += sprintf(buf, ": ");
if (opc_ext->param_count > 0)
DisParams(*opc_ext, op1, op2, buf);
@ -314,40 +316,33 @@ void DSPDisassembler::DisOpcode(const u16 *binbuf, u16 *pc, std::string *dest)
else
*pc += opc->size & ~P_EXT;
dest->append(buffer);
if (pass == 2)
dest->append(buffer);
}
bool DSPDisassembler::DisFile(const char* name, FILE* output)
bool DSPDisassembler::DisFile(const char* name, int pass, std::string *output)
{
FILE* in;
u32 size;
in = fopen(name, "rb");
if (in == NULL) {
FILE* in = fopen(name, "rb");
if (in == NULL)
{
printf("gd_dis_file: No input\n");
return false;
}
fseek(in, 0, SEEK_END);
size = (int)ftell(in) & ~1;
int size = (int)ftell(in) & ~1;
fseek(in, 0, SEEK_SET);
u16 *binbuf = new u16[size / 2];
fread(binbuf, 1, size, in);
fclose(in);
// Actually do the disassembly.
for (u16 pc = 0; pc < (size / 2);)
{
std::string str;
DisOpcode(binbuf, &pc, &str);
fprintf(output, "%s\n", str.c_str());
DisOpcode(binbuf, pass, &pc, output);
if (pass == 2)
output->append("\n");
}
fclose(in);
delete [] binbuf;
return true;
}
const char *gd_get_reg_name(u16 reg)
{
return regnames[reg].name;
}