diff options
Diffstat (limited to 'psp/mips_emit.h')
| -rw-r--r-- | psp/mips_emit.h | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/psp/mips_emit.h b/psp/mips_emit.h index 73f589a..12685e8 100644 --- a/psp/mips_emit.h +++ b/psp/mips_emit.h @@ -2984,24 +2984,23 @@ static void emit_ignorestore_stub(unsigned size, u8 **tr_ptr) { mips_emit_jr(mips_reg_ra); mips_emit_nop(); - // Region 8-B - tmemst[size][ 8] = tmemst[size][ 9] = - tmemst[size][10] = tmemst[size][11] = (u32)translation_ptr; + // Region 9-C + tmemst[size][ 9] = tmemst[size][10] = + tmemst[size][11] = tmemst[size][12] = (u32)translation_ptr; - mips_emit_srl(reg_temp, reg_a0, 26); // Check 6 MSB to be 0x02 - mips_emit_xori(reg_temp, reg_temp, 0x02); + mips_emit_srl(reg_temp, reg_a0, 24); + mips_emit_addiu(reg_temp, reg_temp, -9); + mips_emit_srl(reg_temp, reg_temp, 2); mips_emit_b(bne, reg_temp, reg_zero, st_phndlr_branch(size)); mips_emit_nop(); mips_emit_jr(mips_reg_ra); mips_emit_nop(); - // Region C or F (or bigger!) - tmemst[size][12] = tmemst[size][15] = (u32)translation_ptr; + // Region F or higher + tmemst[size][15] = (u32)translation_ptr; mips_emit_srl(reg_temp, reg_a0, 24); - mips_emit_sltiu(reg_rv, reg_temp, 0x0F); - mips_emit_b(beq, reg_rv, reg_zero, 3); // If 15 or bigger, ignore store - mips_emit_xori(reg_rv, reg_temp, 0x0C); - mips_emit_b(bne, reg_temp, reg_zero, st_phndlr_branch(size)); + mips_emit_sltiu(reg_rv, reg_temp, 0x0F); // Is < 15? + mips_emit_b(bne, reg_rv, reg_zero, st_phndlr_branch(size)); mips_emit_nop(); mips_emit_jr(mips_reg_ra); mips_emit_nop(); @@ -3009,7 +3008,7 @@ static void emit_ignorestore_stub(unsigned size, u8 **tr_ptr) { *tr_ptr = translation_ptr; } -// Stubs for regions with EEPROM or flash/SRAM +// Stubs for regions with EEPROM or flash/SRAM (also RTC) static void emit_saveaccess_stub(u8 **tr_ptr) { unsigned opt, i, strop; u8 *translation_ptr = *tr_ptr; @@ -3062,6 +3061,21 @@ static void emit_saveaccess_stub(u8 **tr_ptr) { } } + // RTC writes, only for 16 bit accesses + for (strop = 0; strop <= 3; strop++) { + tmemst[strop][8] = (u32)translation_ptr; + mips_emit_srl(reg_temp, reg_a0, 24); + mips_emit_xori(reg_rv, reg_temp, 0x08); + mips_emit_b(bne, reg_rv, reg_zero, st_phndlr_branch(strop)); + if (strop == 1) { + emit_mem_call(&write_rtc, 0xFF); // Addr + } else { + mips_emit_nop(); + mips_emit_jr(mips_reg_ra); // Do nothing + mips_emit_nop(); + } + } + // Region 4 writes // I/O writes are also a bit special, they can trigger things like DMA, IRQs... // Also: aligned (strop==3) accesses do not trigger IRQs |