iris/kaizen
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

unmap cartridge and imem/dmem from fastmem (checks outweighed the performance) + support for PAL framerate

Browse Source
This commit is contained in:
CocoSimone
2023-02-11 12:58:18 +01:00
parent 30c6931f09
commit 2cd82dff69
5 changed files with 39 additions and 228 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/backend/core/interpreter/instructions.cpp
View File

@@ -1,6 +1,5 @@
#include <core/Interpreter.hpp>
#define se_imm(x) ((s16)((x) & 0xFFFF))
#define check_address_error(mask, vaddr) (((!regs.cop0.is_64bit_addressing) && (s32)(vaddr) != (vaddr)) || (((vaddr) & (mask)) != 0))
#define check_signed_overflow(op1, op2, res) (((~((op1) ^ (op2)) & ((op1) ^ (res))) >> ((sizeof(res) * 8) - 1)) & 1)
#define check_signed_underflow(op1, op2, res) (((((op1) ^ (op2)) & ((op1) ^ (res))) >> ((sizeof(res) * 8) - 1)) & 1)
@@ -161,27 +160,31 @@ void Interpreter::branch_likely(bool cond, s64 address) {
}
void Interpreter::b(u32 instr, bool cond) {
s64 offset = (s64)se_imm(instr) << 2;
s16 imm = instr;
s64 offset = (s64)imm << 2;
s64 address = regs.pc + offset;
branch(cond, address);
}
void Interpreter::blink(u32 instr, bool cond) {
regs.gpr[31] = regs.nextPC;
s64 offset = (s64)se_imm(instr) << 2;
s16 imm = instr;
s64 offset = (s64)imm << 2;
s64 address = regs.pc + offset;
branch(cond, address);
}
void Interpreter::bl(u32 instr, bool cond) {
s64 offset = (s64)se_imm(instr) << 2;
s16 imm = instr;
s64 offset = (s64)imm << 2;
s64 address = regs.pc + offset;
branch_likely(cond, address);
}
void Interpreter::bllink(u32 instr, bool cond) {
regs.gpr[31] = regs.nextPC;
s64 offset = (s64)se_imm(instr) << 2;
s16 imm = instr;
s64 offset = (s64)imm << 2;
s64 address = regs.pc + offset;
branch_likely(cond, address);
}
@@ -605,11 +608,13 @@ void Interpreter::jalr(u32 instr) {
}
void Interpreter::slti(u32 instr) {
regs.gpr[RT(instr)] = regs.gpr[RS(instr)] < se_imm(instr);
s16 imm = instr;
regs.gpr[RT(instr)] = regs.gpr[RS(instr)] < imm;
}
void Interpreter::sltiu(u32 instr) {
regs.gpr[RT(instr)] = (u64)regs.gpr[RS(instr)] < se_imm(instr);
s16 imm = instr;
regs.gpr[RT(instr)] = (u64)regs.gpr[RS(instr)] < imm;
}
void Interpreter::slt(u32 instr) {