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Add add instruction to compiler

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This commit is contained in:
Maxwell
2026-01-21 13:50:54 +11:00
parent 31577fcc62
commit bf68f1500c
2 changed files with 42 additions and 8 deletions
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11
README.md
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@@ -98,3 +98,14 @@ Commands:
* eval (code): Runs Ground code in the current scope
* help: Shows a help message
## Compiler
CGround now includes an experimental Ground -> x86_64 Linux ASM compiler. You can try it by adding the `-c` flag when running Ground. This will print the generated ASM to the console.
At present only the `int` data type is supported.
Supported instructions so far:
* set
* add
* end

39
src/compiler.c
View File

@@ -105,17 +105,10 @@ char* compileGroundProgram(GroundProgram* program) {
}
char* varName= gi.args.args[0].value.refName;
GroundValue val = gi.args.args[1].value.value;
if (val.type != INT) {
runtimeError(ARG_TYPE_MISMATCH, "For now only ints are supported", &gi, i);
}
char valueStr[32];
snprintf(valueStr, sizeof(valueStr), "%" PRId64, val.data.intVal);
APPEND_ESTR(start, " ; set\n")
APPEND_ESTR(start, " mov rax, ");
APPEND_ESTR(start, valueStr);
APPEND_ESTR(start, processValueString(gi.args.args[1]));
APPEND_ESTR(start, "\n");
APPEND_ESTR(start, " mov [");
APPEND_ESTR(start, varName);
@@ -123,6 +116,36 @@ char* compileGroundProgram(GroundProgram* program) {
break;
}
case ADD: {
if (gi.args.length < 3) {
runtimeError(TOO_FEW_ARGS, "Expecting 2 args for add instruction", &gi, i);
}
if (gi.args.length > 3) {
runtimeError(TOO_MANY_ARGS, "Expecting 2 args for add instruction", &gi, i);
}
if (gi.args.args[0].type != VALUE && gi.args.args[0].type != VALREF) {
runtimeError(ARG_TYPE_MISMATCH, "Expecting an Int for arg 1", &gi, i);
}
if (gi.args.args[1].type != VALUE && gi.args.args[1].type != VALREF) {
runtimeError(ARG_TYPE_MISMATCH, "Expecting an Int for arg 2", &gi, i);
}
if (gi.args.args[2].type != DIRREF) {
runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef for arg 3", &gi, i);
}
char* varName= gi.args.args[2].value.refName;
APPEND_ESTR(start, " ; add\n");
APPEND_ESTR(start, " mov rax, ");
APPEND_ESTR(start, processValueString(gi.args.args[0]));
APPEND_ESTR(start, "\n");
APPEND_ESTR(start, " add rax, ");
APPEND_ESTR(start, processValueString(gi.args.args[1]));
APPEND_ESTR(start, "\n");
APPEND_ESTR(start, " mov [");
APPEND_ESTR(start, varName);
APPEND_ESTR(start, "], rax\n");
break;
}
case END: {
if (gi.args.length < 1) {
runtimeError(TOO_FEW_ARGS, "Expecting 1 arg for end instruction", &gi, i);