Previously it was a tagged union which was one of: * baseline * a specific CPU * a set of features Now, it's possible to have a CPU but also modify the CPU's feature set on top of that. This is closer to what LLVM does. This is more correct because Zig's notion of CPUs (and LLVM's) is not exact CPU models. For example "skylake" is not one very specific model; there are several different pieces of hardware that match "skylake" that have different feature sets enabled.
147 lines
4.6 KiB
C++
147 lines
4.6 KiB
C++
// This file is a shim for zig1. The real implementations of these are in
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// src-self-hosted/stage1.zig
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#include "userland.h"
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#include "util.hpp"
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#include "zig_llvm.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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Error stage2_translate_c(struct Stage2Ast **out_ast,
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struct Stage2ErrorMsg **out_errors_ptr, size_t *out_errors_len,
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const char **args_begin, const char **args_end, const char *resources_path)
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{
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const char *msg = "stage0 called stage2_translate_c";
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stage2_panic(msg, strlen(msg));
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}
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void stage2_free_clang_errors(struct Stage2ErrorMsg *ptr, size_t len) {
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const char *msg = "stage0 called stage2_free_clang_errors";
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stage2_panic(msg, strlen(msg));
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}
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void stage2_zen(const char **ptr, size_t *len) {
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const char *msg = "stage0 called stage2_zen";
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stage2_panic(msg, strlen(msg));
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}
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void stage2_attach_segfault_handler(void) { }
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void stage2_panic(const char *ptr, size_t len) {
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fwrite(ptr, 1, len, stderr);
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fprintf(stderr, "\n");
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fflush(stderr);
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abort();
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}
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void stage2_render_ast(struct Stage2Ast *ast, FILE *output_file) {
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const char *msg = "stage0 called stage2_render_ast";
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stage2_panic(msg, strlen(msg));
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}
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int stage2_fmt(int argc, char **argv) {
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const char *msg = "stage0 called stage2_fmt";
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stage2_panic(msg, strlen(msg));
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}
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stage2_DepTokenizer stage2_DepTokenizer_init(const char *input, size_t len) {
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const char *msg = "stage0 called stage2_DepTokenizer_init";
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stage2_panic(msg, strlen(msg));
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}
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void stage2_DepTokenizer_deinit(stage2_DepTokenizer *self) {
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const char *msg = "stage0 called stage2_DepTokenizer_deinit";
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stage2_panic(msg, strlen(msg));
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}
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stage2_DepNextResult stage2_DepTokenizer_next(stage2_DepTokenizer *self) {
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const char *msg = "stage0 called stage2_DepTokenizer_next";
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stage2_panic(msg, strlen(msg));
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}
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struct Stage2Progress {
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int trash;
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};
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struct Stage2ProgressNode {
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int trash;
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};
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Stage2Progress *stage2_progress_create(void) {
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return nullptr;
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}
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void stage2_progress_destroy(Stage2Progress *progress) {}
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Stage2ProgressNode *stage2_progress_start_root(Stage2Progress *progress,
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const char *name_ptr, size_t name_len, size_t estimated_total_items)
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{
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return nullptr;
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}
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Stage2ProgressNode *stage2_progress_start(Stage2ProgressNode *node,
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const char *name_ptr, size_t name_len, size_t estimated_total_items)
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{
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return nullptr;
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}
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void stage2_progress_end(Stage2ProgressNode *node) {}
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void stage2_progress_complete_one(Stage2ProgressNode *node) {}
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void stage2_progress_disable_tty(Stage2Progress *progress) {}
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void stage2_progress_update_node(Stage2ProgressNode *node, size_t completed_count, size_t estimated_total_items){}
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struct Stage2CpuFeatures {
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const char *llvm_cpu_name;
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const char *llvm_cpu_features;
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const char *builtin_str;
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const char *cache_hash;
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};
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Error stage2_cpu_features_parse(struct Stage2CpuFeatures **out, const char *zig_triple,
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const char *cpu_name, const char *cpu_features)
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{
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if (zig_triple == nullptr) {
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Stage2CpuFeatures *result = allocate<Stage2CpuFeatures>(1, "Stage2CpuFeatures");
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result->llvm_cpu_name = ZigLLVMGetHostCPUName();
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result->llvm_cpu_features = ZigLLVMGetNativeFeatures();
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result->builtin_str = "arch.getBaselineCpuFeatures();\n";
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result->cache_hash = "native\n\n";
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*out = result;
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return ErrorNone;
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}
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if (cpu_name == nullptr && cpu_features == nullptr) {
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Stage2CpuFeatures *result = allocate<Stage2CpuFeatures>(1, "Stage2CpuFeatures");
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result->builtin_str = "arch.getBaselineCpuFeatures();\n";
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result->cache_hash = "\n\n";
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*out = result;
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return ErrorNone;
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}
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const char *msg = "stage0 called stage2_cpu_features_parse with non-null cpu name or features";
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stage2_panic(msg, strlen(msg));
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}
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void stage2_cpu_features_get_cache_hash(const Stage2CpuFeatures *cpu_features,
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const char **ptr, size_t *len)
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{
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*ptr = cpu_features->cache_hash;
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*len = strlen(cpu_features->cache_hash);
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}
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const char *stage2_cpu_features_get_llvm_cpu(const Stage2CpuFeatures *cpu_features) {
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return cpu_features->llvm_cpu_name;
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}
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const char *stage2_cpu_features_get_llvm_features(const Stage2CpuFeatures *cpu_features) {
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return cpu_features->llvm_cpu_features;
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}
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void stage2_cpu_features_get_builtin_str(const Stage2CpuFeatures *cpu_features,
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const char **ptr, size_t *len)
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{
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*ptr = cpu_features->builtin_str;
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*len = strlen(cpu_features->builtin_str);
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}
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int stage2_cmd_targets(const char *zig_triple) {
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const char *msg = "stage0 called stage2_cmd_targets";
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stage2_panic(msg, strlen(msg));
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}
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