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xbox.cpp: add debugger command "xbox vdeclaration" (nw)

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Used to decode the vertex shader declaration stored at a certain
address.
This commit is contained in:
yz70s 2020-05-24 08:29:18 +02:00
parent c044818e99
commit a8f10201bf
2 changed files with 97 additions and 0 deletions
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1
src/mame/includes/xbox.h
View File

@ -164,6 +164,7 @@ private:
void grab_texture_command(int ref, const std::vector<std::string> &params);
void grab_vprog_command(int ref, const std::vector<std::string> &params);
void vprogdis_command(int ref, const std::vector<std::string> &params);
void vdeclaration_command(int ref, const std::vector<std::string> &params);
void help_command(int ref, const std::vector<std::string> &params);
void xbox_debug_commands(int ref, const std::vector<std::string> &params);
int find_bios_index();

96
src/mame/machine/xbox.cpp
View File

@ -21,6 +21,18 @@ const xbox_base_state::debugger_constants xbox_base_state::debugp[] = {
{ 0x49d8055a, {0x8003aae0, 0x5c, 0x1c, 0x28, 0x210, 8, 0x28, 0x1c} }
};
const struct {
const char *name;
const int value;
} vertex_format_names[] = {
{"NONE", 0x02}, {"NORMSHORT1", 0x11}, {"FLOAT1", 0x12}, {"PBYTE1", 0x14},
{"SHORT1", 0x15}, {"NORMPACKED3", 0x16}, {"NORMSHORT2", 0x21},
{"FLOAT2", 0x22}, {"PBYTE2", 0x24}, {"SHORT2", 0x25}, {"NORMSHORT3", 0x31},
{"FLOAT3", 0x32}, {"PBYTE3", 0x34}, {"SHORT3", 0x35}, {"D3DCOLOR", 0x40},
{"FLOAT4", 0x42}, {"NORMSHORT4", 0x41}, {"PBYTE4", 0x44}, {"SHORT4", 0x45},
{"FLOAT2H", 0x72}, { nullptr, 0}
};
int xbox_base_state::find_bios_index()
{
u8 sb = system_bios();
@ -450,6 +462,87 @@ void xbox_base_state::vprogdis_command(int ref, const std::vector<std::string> &
}
}
void xbox_base_state::vdeclaration_command(int ref, const std::vector<std::string> &params)
{
address_space &space = m_maincpu->space();
if (params.size() < 1)
return;
uint64_t addr;
if (!machine().debugger().commands().validate_number_parameter(params[1], addr))
return;
debugger_console &con = machine().debugger().console();
for (int n = 128; n > 0; n--)
{
offs_t address = (offs_t)addr;
if (!m_maincpu->translate(AS_PROGRAM, TRANSLATE_READ_DEBUG, address))
return;
uint32_t w = space.read_dword_unaligned(address);
if (w == 0xffffffff)
{
con.printf("D3DVSD_END()\n");
break;
}
switch ((w >> 29) & 7)
{
case 0:
con.printf("D3DVSD_NOP()\n");
break;
case 1:
if (w & (1 << 28))
con.printf("D3DVSD_STREAM_TESS()\n");
else
con.printf("D3DVSD_STREAM(%d)\n", w & 0x1fffffff);
break;
case 2:
if (w & 0x18000000)
con.printf("D3DVSD_SKIPBYTES(%d)\n", (w >> 16) & 0xfff);
else if (w & 0x10000000)
con.printf("D3DVSD_SKIP(%d)\n", (w >> 16) & 0xfff);
else
{
const char *t = "???";
for (int s = 0; vertex_format_names[s].value != 0; s++)
{
if (vertex_format_names[s].value == ((w >> 16) & 0xfff))
{
t = vertex_format_names[s].name;
break;
}
}
con.printf("D3DVSD_REG(%d, D3DVSDT_%s)\n", w & 0xffff, t);
}
break;
case 3:
if (w & 0x10000000)
con.printf("D3DVSD_TESSUV(%d)\n", w & 0xf);
else
con.printf("D3DVSD_TESSNORMAL(%d, %d)\n", (w >> 20) & 0xf, w & 0xf);
break;
case 4:
con.printf("D3DVSD_CONST(%d, %d)\n", (w & 0xff) - 96, (w >> 25) & 0xf);
for (int n = 0; n < ((w >> 23) & 0x3c); n++)
{
addr += 4;
address = (offs_t)addr;
if (!m_maincpu->translate(AS_PROGRAM, TRANSLATE_READ_DEBUG, address))
return;
w = space.read_dword_unaligned(address);
con.printf("%08x\n", w);
}
break;
default:
con.printf("??? %08x\n", w);
n = 0;
}
addr += 4;
}
}
void xbox_base_state::help_command(int ref, const std::vector<std::string> &params)
{
debugger_console &con = machine().debugger().console();
@ -469,6 +562,7 @@ void xbox_base_state::help_command(int ref, const std::vector<std::string> &para
con.printf(" xbox grab_texture,<type>,<filename> -- Save to <filename> the next used texture of type <type>\n");
con.printf(" xbox grab_vprog,<filename> -- save current vertex program instruction slots to <filename>\n");
con.printf(" xbox vprogdis,<address>,<length>[,<type>] -- disassemble <lenght> vertex program instructions at <address> of <type>\n");
con.printf(" xbox vdeclaration,<address> -- decode vertex program declaration at <address>\n");
con.printf(" xbox help -- this list\n");
}
@ -504,6 +598,8 @@ void xbox_base_state::xbox_debug_commands(int ref, const std::vector<std::string
grab_vprog_command(ref, params);
else if (params[0] == "vprogdis")
vprogdis_command(ref, params);
else if (params[0] == "vdeclaration")
vdeclaration_command(ref, params);
else
help_command(ref, params);
}