From: notaz Date: Sun, 23 Jan 2022 23:49:45 +0000 (+0200) Subject: drc: a bit more sophisticated f1 hack X-Git-Tag: r23~38 X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f94b097581d5833921f6db86f18c7ef1203aa62;p=pcsx_rearmed.git drc: a bit more sophisticated f1 hack yes it sucks, I know... --- diff --git a/libpcsxcore/new_dynarec/emu_if.h b/libpcsxcore/new_dynarec/emu_if.h index 0ce9584c..db11f7b2 100644 --- a/libpcsxcore/new_dynarec/emu_if.h +++ b/libpcsxcore/new_dynarec/emu_if.h @@ -76,6 +76,7 @@ void rcnt2_read_count_m0(u32 addr, u32, u32 cycles); void rcnt2_read_count_m1(u32 addr, u32, u32 cycles); extern unsigned int address; +extern unsigned int hack_addr; extern void *psxH_ptr; extern void *zeromem_ptr; extern void *scratch_buf_ptr; diff --git a/libpcsxcore/new_dynarec/linkage_arm.S b/libpcsxcore/new_dynarec/linkage_arm.S index 63717315..d409aff5 100644 --- a/libpcsxcore/new_dynarec/linkage_arm.S +++ b/libpcsxcore/new_dynarec/linkage_arm.S @@ -60,7 +60,7 @@ DRC_VAR(pending_exception, 4) DRC_VAR(stop, 4) DRC_VAR(branch_target, 4) DRC_VAR(address, 4) -@DRC_VAR(align0, 4) /* unused/alignment */ +DRC_VAR(hack_addr, 4) DRC_VAR(psxRegs, LO_psxRegs_end - LO_psxRegs) /* psxRegs */ diff --git a/libpcsxcore/new_dynarec/linkage_arm64.S b/libpcsxcore/new_dynarec/linkage_arm64.S index 5e9626f5..b9ab726b 100644 --- a/libpcsxcore/new_dynarec/linkage_arm64.S +++ b/libpcsxcore/new_dynarec/linkage_arm64.S @@ -52,7 +52,7 @@ DRC_VAR(pending_exception, 4) DRC_VAR(stop, 4) DRC_VAR(branch_target, 4) DRC_VAR(address, 4) -#DRC_VAR(align0, 16) /* unused/alignment */ +DRC_VAR(hack_addr, 4) DRC_VAR(psxRegs, LO_psxRegs_end - LO_psxRegs) /* psxRegs */ diff --git a/libpcsxcore/new_dynarec/linkage_offsets.h b/libpcsxcore/new_dynarec/linkage_offsets.h index e9bb3abd..7ac2e611 100644 --- a/libpcsxcore/new_dynarec/linkage_offsets.h +++ b/libpcsxcore/new_dynarec/linkage_offsets.h @@ -8,8 +8,8 @@ #define LO_stop (LO_pending_exception + 4) #define LO_branch_target (LO_stop + 4) #define LO_address (LO_branch_target + 4) -#define LO_align0 (LO_address + 4) -#define LO_psxRegs (LO_align0 + 4) +#define LO_hack_addr (LO_address + 4) +#define LO_psxRegs (LO_hack_addr + 4) #define LO_reg (LO_psxRegs) #define LO_lo (LO_reg + 128) #define LO_hi (LO_lo + 4) diff --git a/libpcsxcore/new_dynarec/new_dynarec.c b/libpcsxcore/new_dynarec/new_dynarec.c index e937b762..0900736d 100644 --- a/libpcsxcore/new_dynarec/new_dynarec.c +++ b/libpcsxcore/new_dynarec/new_dynarec.c @@ -224,7 +224,7 @@ static struct decoded_insn static void *copy; static int expirep; static u_int stop_after_jal; - static u_int f1_hack; // 0 - off, ~0 - capture address, else addr + static u_int f1_hack; int new_dynarec_hacks; int new_dynarec_hacks_pergame; @@ -6831,6 +6831,7 @@ void new_dynarec_clear_full(void) literalcount=0; stop_after_jal=0; inv_code_start=inv_code_end=~0; + hack_addr=0; f1_hack=0; // TLB for(n=0;n<4096;n++) ll_clear(jump_in+n); @@ -7046,11 +7047,11 @@ void new_dynarec_load_blocks(const void *save, int size) memcpy(&psxRegs.GPR, regs_save, sizeof(regs_save)); } -static void apply_hacks(void) +static int apply_hacks(void) { int i; if (HACK_ENABLED(NDHACK_NO_COMPAT_HACKS)) - return; + return 0; /* special hack(s) */ for (i = 0; i < slen - 4; i++) { @@ -7075,11 +7076,12 @@ static void apply_hacks(void) if (dops[i].itype == STORELR && dops[i].rs1 == 6 && dops[i-1].itype == STORELR && dops[i-1].rs1 == 6) { - SysPrintf("F1 hack from %08x\n", start); - if (f1_hack == 0) - f1_hack = ~0u; + SysPrintf("F1 hack from %08x, old dst %08x\n", start, hack_addr); + f1_hack = 1; + return 1; } } + return 0; } int new_recompile_block(u_int addr) @@ -7117,9 +7119,11 @@ int new_recompile_block(u_int addr) ll_add_flags(jump_in+page,start,state_rflags,(void *)beginning); return 0; } - else if (f1_hack == ~0u || (f1_hack != 0 && start == f1_hack)) { + else if (f1_hack && hack_addr == 0) { void *beginning = start_block(); u_int page = get_page(start); + emit_movimm(start, 0); + emit_writeword(0, &hack_addr); emit_readword(&psxRegs.GPR.n.sp, 0); emit_readptr(&mem_rtab, 1); emit_shrimm(0, 12, 2); @@ -7135,7 +7139,6 @@ int new_recompile_block(u_int addr) ll_add_flags(jump_in + page, start, state_rflags, beginning); SysPrintf("F1 hack to %08x\n", start); - f1_hack = start; return 0; } @@ -7663,7 +7666,7 @@ int new_recompile_block(u_int addr) } assert(slen>0); - apply_hacks(); + int clear_hack_addr = apply_hacks(); /* Pass 2 - Register dependencies and branch targets */ @@ -9203,6 +9206,11 @@ int new_recompile_block(u_int addr) instr_addr[i] = out; assem_debug("<->\n"); drc_dbg_emit_do_cmp(i, ccadj[i]); + if (clear_hack_addr) { + emit_movimm(0, 0); + emit_writeword(0, &hack_addr); + clear_hack_addr = 0; + } // load regs if(regs[i].regmap_entry[HOST_CCREG]==CCREG&®s[i].regmap[HOST_CCREG]!=CCREG)