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Implement syscall for arm32

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This commit is contained in:
gingerBill
2022-05-01 23:32:31 +01:00
parent 0e27b27b81
commit 18ad6c33ef
1 changed files with 96 additions and 71 deletions
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src/llvm_backend_proc.cpp
+68 -43
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@@ -189,7 +189,7 @@ lbProcedure *lb_create_procedure(lbModule *m, Entity *entity, bool ignore_body)
GB_ASSERT(entity->kind == Entity_Procedure); GB_ASSERT(entity->kind == Entity_Procedure);
String link_name = entity->Procedure.link_name; String link_name = entity->Procedure.link_name;
if (entity->flags & EntityFlag_CustomLinkName && if (entity->flags & EntityFlag_CustomLinkName &&
link_name != "") { link_name != "") {
if (string_starts_with(link_name, str_lit("__"))) { if (string_starts_with(link_name, str_lit("__"))) {
LLVMSetLinkage(p->value, LLVMExternalLinkage); LLVMSetLinkage(p->value, LLVMExternalLinkage);
} else { } else {
@@ -1315,9 +1315,9 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
case BuiltinProc_clamp: case BuiltinProc_clamp:
return lb_emit_clamp(p, type_of_expr(expr), return lb_emit_clamp(p, type_of_expr(expr),
lb_build_expr(p, ce->args[0]), lb_build_expr(p, ce->args[0]),
lb_build_expr(p, ce->args[1]), lb_build_expr(p, ce->args[1]),
lb_build_expr(p, ce->args[2])); lb_build_expr(p, ce->args[2]));
case BuiltinProc_soa_zip: case BuiltinProc_soa_zip:
@@ -1370,7 +1370,7 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
case BuiltinProc_cpu_relax: case BuiltinProc_cpu_relax:
if (build_context.metrics.arch == TargetArch_i386 || if (build_context.metrics.arch == TargetArch_i386 ||
build_context.metrics.arch == TargetArch_amd64) { build_context.metrics.arch == TargetArch_amd64) {
LLVMTypeRef func_type = LLVMFunctionType(LLVMVoidTypeInContext(p->module->ctx), nullptr, 0, false); LLVMTypeRef func_type = LLVMFunctionType(LLVMVoidTypeInContext(p->module->ctx), nullptr, 0, false);
LLVMValueRef the_asm = llvm_get_inline_asm(func_type, str_lit("pause"), {}, true); LLVMValueRef the_asm = llvm_get_inline_asm(func_type, str_lit("pause"), {}, true);
GB_ASSERT(the_asm != nullptr); GB_ASSERT(the_asm != nullptr);
@@ -1993,47 +1993,72 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
break; break;
case TargetArch_arm64: case TargetArch_arm64:
{ {
GB_ASSERT(arg_count <= 7); GB_ASSERT(arg_count <= 7);
if(build_context.metrics.os == TargetOs_darwin) { if(build_context.metrics.os == TargetOs_darwin) {
char asm_string[] = "svc #0x80"; char asm_string[] = "svc #0x80";
gbString constraints = gb_string_make(heap_allocator(), "={x0}"); gbString constraints = gb_string_make(heap_allocator(), "={x0}");
for (unsigned i = 0; i < arg_count; i++) { for (unsigned i = 0; i < arg_count; i++) {
constraints = gb_string_appendc(constraints, ",{"); constraints = gb_string_appendc(constraints, ",{");
static char const *regs[] = { static char const *regs[] = {
"x16", "x16",
"x0", "x0",
"x1", "x1",
"x2", "x2",
"x3", "x3",
"x4", "x4",
"x5", "x5",
}; };
constraints = gb_string_appendc(constraints, regs[i]); constraints = gb_string_appendc(constraints, regs[i]);
constraints = gb_string_appendc(constraints, "}"); constraints = gb_string_appendc(constraints, "}");
} }
inline_asm = llvm_get_inline_asm(func_type, make_string_c(asm_string), make_string_c(constraints)); inline_asm = llvm_get_inline_asm(func_type, make_string_c(asm_string), make_string_c(constraints));
} else { } else {
char asm_string[] = "svc #0"; char asm_string[] = "svc #0";
gbString constraints = gb_string_make(heap_allocator(), "={x0}"); gbString constraints = gb_string_make(heap_allocator(), "={x0}");
for (unsigned i = 0; i < arg_count; i++) { for (unsigned i = 0; i < arg_count; i++) {
constraints = gb_string_appendc(constraints, ",{"); constraints = gb_string_appendc(constraints, ",{");
static char const *regs[] = { static char const *regs[] = {
"x8", "x8",
"x0", "x0",
"x1", "x1",
"x2", "x2",
"x3", "x3",
"x4", "x4",
"x5", "x5",
}; };
constraints = gb_string_appendc(constraints, regs[i]); constraints = gb_string_appendc(constraints, regs[i]);
constraints = gb_string_appendc(constraints, "}"); constraints = gb_string_appendc(constraints, "}");
} }
inline_asm = llvm_get_inline_asm(func_type, make_string_c(asm_string), make_string_c(constraints)); inline_asm = llvm_get_inline_asm(func_type, make_string_c(asm_string), make_string_c(constraints));
} }
}
break;
case TargetArch_arm32:
{
// TODO(bill): Check this is correct
GB_ASSERT(arg_count <= 7);
char asm_string[] = "svc #0";
gbString constraints = gb_string_make(heap_allocator(), "={r0}");
for (unsigned i = 0; i < arg_count; i++) {
constraints = gb_string_appendc(constraints, ",{");
static char const *regs[] = {
"r8",
"r0",
"r1",
"r2",
"r3",
"r4",
"r5",
};
constraints = gb_string_appendc(constraints, regs[i]);
constraints = gb_string_appendc(constraints, "}");
}
inline_asm = llvm_get_inline_asm(func_type, make_string_c(asm_string), make_string_c(constraints));
} }
break; break;
default: default: