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valid step function

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This commit is contained in:
inixyz
2023-10-21 12:25:36 +03:00
parent 88c2be59cd
commit 4041cc3056
2 changed files with 17 additions and 8 deletions
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2
src/main.c
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@@ -152,7 +152,7 @@ int main(int argc, char** argv){
//program execution
tinyriscv_init(&hart);
while(hart.pc < file_size + tinyriscv_MEM_OFFSET) tinyriscv_step(&hart);
while(tinyriscv_valid_step(&hart)) tinyriscv_step(&hart);
if(do_regdump) regdump(&hart);
if(do_memdump) memdump(&hart, dump_addr);

23
src/tinyriscv.h
View File

@@ -150,6 +150,22 @@ void tinyriscv_r_type(const u8 func3, const u8 func7, u32 x[32], const u8 rd,
////////////////////////////////////////////////////////////////////////////////
void tinyriscv_init(tinyriscv_hart* hart){
hart->x[2] = tinyriscv_MEM_OFFSET + hart->mem_size;
hart->pc = tinyriscv_MEM_OFFSET;
}
////////////////////////////////////////////////////////////////////////////////
u8 tinyriscv_valid_step(const tinyriscv_hart* hart){
if(!load32(hart->mem, hart->pc)) return 0;
if(hart->pc >= hart->mem_size + tinyriscv_MEM_OFFSET) return 0;
return 1;
}
////////////////////////////////////////////////////////////////////////////////
void tinyriscv_step(tinyriscv_hart* hart){
//fetch
const u32 inst = load32(hart->mem, hart->pc);
@@ -194,11 +210,4 @@ void tinyriscv_step(tinyriscv_hart* hart){
////////////////////////////////////////////////////////////////////////////////
void tinyriscv_init(tinyriscv_hart* hart){
hart->x[2] = tinyriscv_MEM_OFFSET + hart->mem_size;
hart->pc = tinyriscv_MEM_OFFSET;
}
////////////////////////////////////////////////////////////////////////////////
#endif //TINYRISCV_H