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Add a hook for Gods Eater Burst's swizzled copy.

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This commit is contained in:
Unknown W. Brackets 2014-05-30 22:49:16 -07:00
parent d09be5a4bc
commit 5dd8ebe2b4
3 changed files with 40 additions and 0 deletions
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37
Core/HLE/ReplaceTables.cpp
View File

@ -438,6 +438,41 @@ static int Replace_dl_write_matrix() {
return 60;
}
static bool GetMIPSStaticAddress(u32 &addr, s32 lui_offset, s32 lw_offset) {
const MIPSOpcode upper = Memory::Read_Instruction(currentMIPS->pc + lui_offset);
if (upper != MIPS_MAKE_LUI(MIPS_GET_RT(upper), upper & 0xffff)) {
return false;
}
const MIPSOpcode lower = Memory::Read_Instruction(currentMIPS->pc + lw_offset);
if (lower != MIPS_MAKE_LW(MIPS_GET_RT(lower), MIPS_GET_RS(lower), lower & 0xffff)) {
return false;
}
addr = ((upper & 0xffff) << 16) + (s16)(lower & 0xffff);
return true;
}
static int Hook_godseaterburst_blit_texture() {
u32 texaddr;
// Only if there's no texture.
if (!GetMIPSStaticAddress(texaddr, 0x000c, 0x0030)) {
return 0;
}
u32 fb_infoaddr;
if (Memory::Read_U32(texaddr) != 0 || !GetMIPSStaticAddress(fb_infoaddr, 0x01d0, 0x01d4)) {
return 0;
}
const u32 fb_info = Memory::Read_U32(fb_infoaddr);
const u32 fb_address = Memory::Read_U32(fb_info);
if (Memory::IsVRAMAddress(fb_address)) {
// Cheat a bit to force a download of the framebuffer.
// VRAM + 0x00400000 is simply a VRAM mirror.
gpu->PerformMemoryCopy(fb_address ^ 0x00400000, fb_address, 0x00048000);
CBreakPoints::ExecMemCheck(fb_address, true, 0x00048000, currentMIPS->pc);
}
return 0;
}
// Can either replace with C functions or functions emitted in Asm/ArmAsm.
static const ReplacementTableEntry entries[] = {
// TODO: I think some games can be helped quite a bit by implementing the
@ -476,6 +511,8 @@ static const ReplacementTableEntry entries[] = {
// Haven't investigated write_matrix_4 and 5 but I think they are similar to 1 and 2.
// { "vmmul_q_transp", &Replace_vmmul_q_transp, 0, 0},
{ "godseaterburst_blit_texture", &Hook_godseaterburst_blit_texture, 0, REPFLAG_HOOKENTER},
{}
};

2
Core/MIPS/MIPSAnalyst.cpp
View File

@ -149,6 +149,7 @@ static const HardHashTableEntry hardcodedHashes[] = {
{ 0x317afeb882ff324a, 212, "memcpy", }, // Mimana
{ 0x31ea2e192f5095a1, 52, "vector_add_t", },
{ 0x31f523ef18898e0e, 420, "logf", },
{ 0x32215b1d2196377f, 844, "godseaterburst_blit_texture", },
{ 0x32806967fe81568b, 40, "vector_sub_t_2", },
{ 0x32ceb9a7f72b9385, 440, "_strtoul_r", },
{ 0x32e6bc7c151491ed, 68, "memchr", },
@ -294,6 +295,7 @@ static const HardHashTableEntry hardcodedHashes[] = {
{ 0xa1ca0640f11182e7, 72, "strcspn", },
{ 0xa243486be51ce224, 272, "cosf", },
{ 0xa2bcef60a550a3ef, 92, "matrix_rot_z", },
{ 0xa373f55c65cd757a, 312, "memcpy_swizzled" }, // God Eater Burst Demo
{ 0xa41989db0f9bf97e, 1304, "pow", },
{ 0xa46cc6ea720d5775, 44, "dl_write_cull", },
{ 0xa54967288afe8f26, 600, "ceil", },

1
Core/MIPS/MIPSCodeUtils.h
View File

@ -30,6 +30,7 @@
#define MIPS_MAKE_ADDIU(dreg, sreg, immval) ((9 << 26) | ((dreg) << 16) | ((sreg) << 21) | (immval))
#define MIPS_MAKE_LUI(reg, immval) (0x3c000000 | ((reg) << 16) | (immval))
#define MIPS_MAKE_LW(rt, rs, immval) (0x8c000000 | ((rs) << 21) | ((rt) << 16) | (immval))
#define MIPS_MAKE_SYSCALL(module, function) GetSyscallOp(module, GetNibByName(module, function))
#define MIPS_MAKE_BREAK() (13) // ! :)