Efthimis/First
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

CPU: Fixed a bug with the PUSH/POP instructions where only the lower 24bits were saved

Browse Source
This commit is contained in:
(Tim) Efthimis Kritikos 2024-02-16 21:54:17 +00:00
parent da8ffaf3a4
commit 7ae98d8353
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
cpu.c
View File

@ -393,6 +393,7 @@ int exec(struct simdata_t *simdata){
simdata->RAM[simdata->registers->SP ]=simdata->registers->GPR[simdata->exec_data->in_op1->data]&0x000000FF; simdata->RAM[simdata->registers->SP ]=simdata->registers->GPR[simdata->exec_data->in_op1->data]&0x000000FF;
simdata->RAM[simdata->registers->SP+1]=(simdata->registers->GPR[simdata->exec_data->in_op1->data]&0x0000FF00)>>8; simdata->RAM[simdata->registers->SP+1]=(simdata->registers->GPR[simdata->exec_data->in_op1->data]&0x0000FF00)>>8;
simdata->RAM[simdata->registers->SP+2]=(simdata->registers->GPR[simdata->exec_data->in_op1->data]&0x00FF0000)>>16; simdata->RAM[simdata->registers->SP+2]=(simdata->registers->GPR[simdata->exec_data->in_op1->data]&0x00FF0000)>>16;
simdata->RAM[simdata->registers->SP+3]=(simdata->registers->GPR[simdata->exec_data->in_op1->data]&0xFF000000)>>24;
simdata->registers->SP+=4; simdata->registers->SP+=4;
break; break;
case POP: case POP:
@ -400,6 +401,7 @@ int exec(struct simdata_t *simdata){
simdata->registers->GPR[simdata->exec_data->in_op1->data]=simdata->RAM[simdata->registers->SP]; simdata->registers->GPR[simdata->exec_data->in_op1->data]=simdata->RAM[simdata->registers->SP];
simdata->registers->GPR[simdata->exec_data->in_op1->data]|=simdata->RAM[simdata->registers->SP+1]<<8; simdata->registers->GPR[simdata->exec_data->in_op1->data]|=simdata->RAM[simdata->registers->SP+1]<<8;
simdata->registers->GPR[simdata->exec_data->in_op1->data]|=simdata->RAM[simdata->registers->SP+2]<<16; simdata->registers->GPR[simdata->exec_data->in_op1->data]|=simdata->RAM[simdata->registers->SP+2]<<16;
simdata->registers->GPR[simdata->exec_data->in_op1->data]|=simdata->RAM[simdata->registers->SP+3]<<24;
break; break;
} }
add_to_instr_list(&simdata->cpu_gui_hints->executing_list,simdata->exec_data->address); add_to_instr_list(&simdata->cpu_gui_hints->executing_list,simdata->exec_data->address);