diff options
Diffstat (limited to 'code/qcommon')
| -rw-r--r-- | code/qcommon/vm_x86_64.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/code/qcommon/vm_x86_64.c b/code/qcommon/vm_x86_64.c index 1d9480c..64dfae0 100644 --- a/code/qcommon/vm_x86_64.c +++ b/code/qcommon/vm_x86_64.c @@ -648,21 +648,21 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) { XJ("jb"); break; case OP_LOAD1: - emit("movl 0(%%rsi), %%eax"); // get pointer from stack + emit("movl 0(%%rsi), %%eax"); // get value from stack RANGECHECK(eax); emit("movb 0(%%r8, %%rax, 1), %%al"); // deref into eax emit("andq $255, %%rax"); emit("movl %%eax, 0(%%rsi)"); // store on stack break; case OP_LOAD2: - emit("movl 0(%%rsi), %%eax"); // get pointer from stack + emit("movl 0(%%rsi), %%eax"); // get value from stack RANGECHECK(eax); - emit("movw 0(%%r8, %%rax, 1), %%rax"); // deref into eax + emit("movw 0(%%r8, %%rax, 1), %%ax"); // deref into eax emit("movl %%eax, 0(%%rsi)"); // store on stack break; case OP_LOAD4: - emit("movl 0(%%rsi), %%eax"); // get pointer from stack - RANGECHECK(eax); + emit("movl 0(%%rsi), %%eax"); // get value from stack + RANGECHECK(eax); // not a pointer!? emit("movl 0(%%r8, %%rax, 1), %%eax"); // deref into eax emit("movl %%eax, 0(%%rsi)"); // store on stack break; @@ -678,7 +678,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) { emit("movl 0(%%rsi), %%eax"); // get value from stack emit("movl -4(%%rsi), %%ebx"); // get pointer from stack RANGECHECK(ebx); - emit("movw %%rax, 0(%%r8, %%rbx, 1)"); // store in memory + emit("movw %%ax, 0(%%r8, %%rbx, 1)"); // store in memory emit("subq $8, %%rsi"); break; case OP_STORE4: @@ -717,14 +717,14 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) { break; case OP_SEX8: - emit("movw 0(%%rsi), %%rax"); + emit("movw 0(%%rsi), %%ax"); emit("andq $255, %%rax"); emit("cbw"); emit("cwde"); emit("movl %%eax, 0(%%rsi)"); break; case OP_SEX16: - emit("movw 0(%%rsi), %%rax"); + emit("movw 0(%%rsi), %%ax"); emit("cwde"); emit("movl %%eax, 0(%%rsi)"); break; @@ -755,14 +755,15 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) { emit("subq $4, %%rsi"); emit("movl 0(%%rsi), %%eax"); emit("xorl %%edx, %%edx"); - emit("divl 4(%%rsi)"); + emit("cdq"); + emit("idivl 4(%%rsi)"); emit("movl %%edx, 0(%%rsi)"); break; case OP_MODU: emit("subq $4, %%rsi"); emit("movl 0(%%rsi), %%eax"); emit("xorl %%edx, %%edx"); - emit("idivl 4(%%rsi)"); + emit("divl 4(%%rsi)"); emit("movl %%edx, 0(%%rsi)"); break; case OP_MULI: |