taitep/trve
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Make a dedicated function for advancing the PC by one instruction

Browse Source
This commit is contained in:
taitep
2025-12-21 16:00:54 +01:00
parent 390a2b3228
commit 25c3b9f5e2
2 changed files with 12 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/instructions/rvi.rs
View File

@@ -17,7 +17,7 @@ pub fn addi(core: &mut Core, instr: Instruction) -> InstructionResult {
core.reg_read(instr.rs1()).wrapping_add(instr.imm_i()),
);
core.pc = core.pc.wrapping_add(4);
core.advance_pc();
InstructionResult::Normal
}
@@ -27,7 +27,7 @@ pub fn addiw(core: &mut Core, instr: Instruction) -> InstructionResult {
core.reg_write(instr.rd(), res as i64 as u64);
core.pc = core.pc.wrapping_add(4);
core.advance_pc();
InstructionResult::Normal
}
@@ -46,7 +46,7 @@ pub fn sd(core: &mut Core, instr: Instruction) -> InstructionResult {
match core.mem.write_dword(page, offset, value) {
Ok(_) => {
core.pc = core.pc.wrapping_add(4);
core.advance_pc();
InstructionResult::Normal
}
Err(_) => InstructionResult::Exception(()),
@@ -62,7 +62,7 @@ pub fn sb(core: &mut Core, instr: Instruction) -> InstructionResult {
match core.mem.write_byte(page, offset, value) {
Ok(_) => {
core.pc = core.pc.wrapping_add(4);
core.advance_pc();
InstructionResult::Normal
}
Err(_) => InstructionResult::Exception(()),
@@ -79,7 +79,7 @@ pub fn lb(core: &mut Core, instr: Instruction) -> InstructionResult {
Ok(x) => {
let x = x as i8 as i64 as DWord;
core.reg_write(instr.rd(), x);
core.pc = core.pc.wrapping_add(4);
core.advance_pc();
InstructionResult::Normal
}
Err(_) => InstructionResult::Exception(()),
@@ -96,7 +96,7 @@ pub fn lbu(core: &mut Core, instr: Instruction) -> InstructionResult {
Ok(x) => {
let x = x as DWord;
core.reg_write(instr.rd(), x);
core.pc = core.pc.wrapping_add(4);
core.advance_pc();
InstructionResult::Normal
}
Err(_) => InstructionResult::Exception(()),
@@ -105,7 +105,7 @@ pub fn lbu(core: &mut Core, instr: Instruction) -> InstructionResult {
pub fn lui(core: &mut Core, instr: Instruction) -> InstructionResult {
core.reg_write(instr.rd(), instr.imm_u());
core.pc = core.pc.wrapping_add(4);
core.advance_pc();
InstructionResult::Normal
}
@@ -118,7 +118,7 @@ pub fn jal(core: &mut Core, instr: Instruction) -> InstructionResult {
pub fn slli(core: &mut Core, instr: Instruction) -> InstructionResult {
core.reg_write(instr.rd(), core.reg_read(instr.rs1()) << instr.imm_shamt());
core.pc = core.pc.wrapping_add(4);
core.advance_pc();
InstructionResult::Normal
}