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#define _GNU_SOURCE
#include <assert.h>
#include <glob.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "cbs.h"
#define TARGET "oryx"
enum {
SIMD_AVX2 = 1 << 0,
SIMD_NEON = 1 << 1,
SIMD_SSE4_1 = 1 << 2,
};
static char *cflags_all[] = {
"-pipe",
"-std=c11",
"-Wall",
"-Wextra",
"-Wno-attributes",
"-Wno-parentheses",
"-Wno-pointer-sign",
"-Wpedantic",
"-Wvla",
#if __GLIBC__
"-D_GNU_SOURCE",
#endif
};
static char *cflags_dbg[] = {
"-DDEBUG=1", "-fsanitize=address,undefined", "-g3", "-ggdb3", "-O0",
};
static char *cflags_rls[] = {
"-DNDEBUG=1", "-flto", "-march=native", "-mtune=native", "-O3",
};
static char *argv0;
static bool fflag, rflag;
static int simd_flags;
static void cc(void *);
static void ld(void);
static bool tagvalid(const char *);
static void ckd_cpu_flags(void);
static int globerr(const char *, int);
static void
usage(void)
{
fprintf(stderr,
"Usage: %s [-fr]\n"
" %s clean\n",
argv0, argv0);
exit(EXIT_FAILURE);
}
int
main(int argc, char **argv)
{
cbsinit(argc, argv);
rebuild();
argv0 = argv[0];
int opt;
while ((opt = getopt(argc, argv, "fr")) != -1) {
switch (opt) {
case 'f':
fflag = true;
break;
case 'r':
rflag = true;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
struct strs cmd = {0};
if (argc > 0) {
if (strcmp("clean", *argv) == 0) {
strspushl(&cmd, "find", ".", "-name", TARGET, "-or", "-name", "*.o",
"-delete");
cmdput(cmd);
cmdexec(cmd);
} else {
fprintf(stderr, "%s: invalid subcommand — ‘%s’\n", argv0, *argv);
usage();
}
return EXIT_SUCCESS;
}
ckd_cpu_flags();
glob_t g;
assert(glob("src/*.c", 0, globerr, &g) == 0);
int procs = nproc();
if (procs == -1)
procs = 8;
tpool tp;
tpinit(&tp, procs);
for (size_t i = 0; i < g.gl_pathc; i++)
tpenq(&tp, cc, g.gl_pathv[i], NULL);
tpwait(&tp);
tpfree(&tp);
ld();
globfree(&g);
strsfree(&cmd);
return EXIT_SUCCESS;
}
void
cc(void *arg)
{
if (!tagvalid(arg))
return;
struct strs cmd = {0};
char *dst = swpext(arg, "o"), *src = arg;
if (!fflag && !foutdatedl(dst, src))
goto out;
strspushenvl(&cmd, "CC", "cc");
strspush(&cmd, cflags_all, lengthof(cflags_all));
if (rflag)
strspushenv(&cmd, "CFLAGS", cflags_rls, lengthof(cflags_rls));
else
strspushenv(&cmd, "CFLAGS", cflags_dbg, lengthof(cflags_dbg));
if (simd_flags != 0)
strspushl(&cmd, "-DORYX_SIMD=1");
if (strcmp(arg, "src/codegen.c") == 0)
llvmquery(&cmd, LLVM_CFLAGS);
strspushl(&cmd, "-o", dst, "-c", src);
cmdput(cmd);
cmdexec(cmd);
strsfree(&cmd);
out:
free(dst);
}
void
ld(void)
{
glob_t g;
bool dobuild = fflag;
struct strs cmd = {0};
strspushenvl(&cmd, "CC", "cc");
strspush(&cmd, cflags_all, lengthof(cflags_all));
if (rflag)
strspushenv(&cmd, "CFLAGS", cflags_rls, lengthof(cflags_rls));
else
strspushenv(&cmd, "CFLAGS", cflags_dbg, lengthof(cflags_dbg));
llvmquery(&cmd, LLVM_LDFLAGS | LLVM_LIBS);
strspushl(&cmd, "-o", TARGET);
assert(glob("src/*.o", 0, globerr, &g) == 0);
for (size_t i = 0; i < g.gl_pathc; i++) {
if (!tagvalid(g.gl_pathv[i]))
continue;
if (foutdatedl(TARGET, g.gl_pathv[i]))
dobuild = true;
strspushl(&cmd, g.gl_pathv[i]);
}
if (dobuild) {
cmdput(cmd);
cmdexec(cmd);
}
globfree(&g);
strsfree(&cmd);
}
bool
tagvalid(const char *file)
{
if (strstr(file, "-avx2.") != NULL && (simd_flags & SIMD_AVX2) == 0)
return false;
if (strstr(file, "-neon.") != NULL && (simd_flags & SIMD_NEON) == 0)
return false;
if (strstr(file, "-sse4_1.") != NULL && (simd_flags & SIMD_SSE4_1) == 0)
return false;
return true;
}
void
ckd_cpu_flags(void)
{
if (!rflag)
return;
#if __GNUC__ && __x86_64__
uint32_t exx;
asm volatile("cpuid" : "=b"(exx) : "a"(7), "c"(0));
if (exx & (1 << 5)) {
simd_flags |= SIMD_AVX2;
return;
}
asm volatile("cpuid" : "=c"(exx) : "a"(1), "c"(0));
if (exx & (1 << 19))
simd_flags |= SIMD_SSE4_1;
#elif __ARM_NEON
simd_flags |= SIMD_NEON;
#endif
}
int
globerr(const char *s, int e)
{
fprintf(stderr, "glob: %s: %s\n", s, strerror(e));
exit(EXIT_FAILURE);
}
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