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cosmopolitan/test/tool/build/lib/bsu_test.c
Justine Tunney 23e235b7a5
Fix bugs in cosmocc toolchain 
This change integrates e58abc1110b335a3341e8ad5821ad8e3880d9bb2 from
https://github.com/ahgamut/musl-cross-make/ which fixes the issues we
were having with our C language extension for symbolic constants. This
change also performs some code cleanup and bug fixes to getaddrinfo().
It's now possible to compile projects like ncurses, readline and python
without needing to patch anything upstream, except maybe a line or two.
Pretty soon it should be possible to build a Linux distro on Cosmo.
2023-06-08 23:44:03 -07:00

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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/testlib/testlib.h"
#include "test/tool/build/lib/numbers.h"
#include "test/tool/build/lib/optest.h"
#include "tool/build/lib/alu.h"
#include "tool/build/lib/flags.h"
#include "tool/build/lib/machine.h"
#ifdef __x86_64__
#define NATIVE_ALU2(MODE, INSTRUCTION) \
asm("pushf\n\t" \
"andl\t%3,(%%rsp)\n\t" \
"orl\t%4,(%%rsp)\n\t" \
"popf\n\t" INSTRUCTION "\t%b2,%" MODE "0\n\t" \
"pushf\n\t" \
"pop\t%q1" \
: "+r"(x), "=r"(*f) \
: "c"(y), "i"(~FMASK), "r"(*f & FMASK) \
: "cc")
#define NATIVE_ALU2_ANYBITS(INSTRUCTION, MUTATING) \
switch (w) { \
case 0: \
NATIVE_ALU2("b", INSTRUCTION); \
if (MUTATING) x &= 0xff; \
return x; \
case 1: \
NATIVE_ALU2("w", INSTRUCTION); \
if (MUTATING) x &= 0xffff; \
return x; \
case 2: \
NATIVE_ALU2("k", INSTRUCTION); \
return x; \
case 3: \
NATIVE_ALU2("q", INSTRUCTION); \
return x; \
default: \
abort(); \
}
int64_t Bsu(int w, int h, uint64_t x, uint64_t y, uint32_t *f) {
switch (h & 7) {
case BSU_SHR:
switch (w) {
case 0:
return Shr8(x, y, f);
case 1:
return Shr16(x, y, f);
case 2:
return Shr32(x, y, f);
case 3:
return Shr64(x, y, f);
default:
__builtin_unreachable();
}
case BSU_SAL:
case BSU_SHL:
switch (w) {
case 0:
return Shl8(x, y, f);
case 1:
return Shl16(x, y, f);
case 2:
return Shl32(x, y, f);
case 3:
return Shl64(x, y, f);
default:
__builtin_unreachable();
}
case BSU_SAR:
switch (w) {
case 0:
return Sar8(x, y, f);
case 1:
return Sar16(x, y, f);
case 2:
return Sar32(x, y, f);
case 3:
return Sar64(x, y, f);
default:
__builtin_unreachable();
}
case BSU_ROL:
switch (w) {
case 0:
return Rol8(x, y, f);
case 1:
return Rol16(x, y, f);
case 2:
return Rol32(x, y, f);
case 3:
return Rol64(x, y, f);
default:
__builtin_unreachable();
}
case BSU_ROR:
switch (w) {
case 0:
return Ror8(x, y, f);
case 1:
return Ror16(x, y, f);
case 2:
return Ror32(x, y, f);
case 3:
return Ror64(x, y, f);
default:
__builtin_unreachable();
}
case BSU_RCR:
switch (w) {
case 0:
return Rcr8(x, y, f);
case 1:
return Rcr16(x, y, f);
case 2:
return Rcr32(x, y, f);
case 3:
return Rcr64(x, y, f);
default:
__builtin_unreachable();
}
case BSU_RCL:
switch (w) {
case 0:
return Rcl8(x, y, f);
case 1:
return Rcl16(x, y, f);
case 2:
return Rcl32(x, y, f);
case 3:
return Rcl64(x, y, f);
default:
__builtin_unreachable();
}
default:
__builtin_unreachable();
}
}
int64_t RunGolden(char w, int h, uint64_t x, uint64_t y, uint32_t *f) {
switch (h & 7) {
case BSU_ROR:
NATIVE_ALU2_ANYBITS("ror", true);
case BSU_SHL:
NATIVE_ALU2_ANYBITS("shl", true);
case BSU_SAL:
NATIVE_ALU2_ANYBITS("sal", true);
case BSU_RCR:
NATIVE_ALU2_ANYBITS("rcr", true);
case BSU_SAR:
NATIVE_ALU2_ANYBITS("sar", true);
case BSU_SHR:
NATIVE_ALU2_ANYBITS("shr", true);
case BSU_RCL:
NATIVE_ALU2_ANYBITS("rcl", true);
case BSU_ROL:
NATIVE_ALU2_ANYBITS("rol", true);
default:
abort();
}
}
const uint8_t kBsuOps[] = {
BSU_SHR, BSU_SHL, BSU_ROL, BSU_ROR, BSU_RCL,
BSU_RCR, BSU_SHL, BSU_SAL, BSU_SAR,
};
const char *const kBsuNames[] = {
[BSU_ROL] = "rol", [BSU_ROR] = "ror", [BSU_RCL] = "rcl", [BSU_RCR] = "rcr",
[BSU_SHL] = "shl", [BSU_SHR] = "shr", [BSU_SAL] = "sal", [BSU_SAR] = "sar",
};
int64_t RunOpTest(char w, int h, uint64_t x, uint64_t y, uint32_t *f) {
return Bsu(w, h, x, y, f);
}
void FixupUndefOpTestFlags(char w, int h, uint64_t x, uint64_t y,
uint32_t goldenflags, uint32_t *flags) {
y &= w == 3 ? 0x3F : 0x1F;
if (y != 0 && y != 1) {
*flags = SetFlag(*flags, FLAGS_OF, GetFlag(goldenflags, FLAGS_OF));
}
if (y >= w) {
*flags = SetFlag(*flags, FLAGS_CF, GetFlag(goldenflags, FLAGS_CF));
}
}
TEST(bsu, test) {
RunOpTests(kBsuOps, ARRAYLEN(kBsuOps), kBsuNames);
}
TEST(shrd32, smoke) {
int i, j, k;
uint8_t b, cf, of;
uint32_t x, y, z1, f, z2, unflag;
for (i = 0; i < ARRAYLEN(kNumbers); ++i) {
x = kNumbers[i];
for (j = 0; j < ARRAYLEN(kNumbers); ++j) {
y = kNumbers[j];
for (k = 0; k < ARRAYLEN(kNumbers); ++k) {
f = 0;
cf = 0;
of = 0;
b = kNumbers[k];
z1 = BsuDoubleShift(2, x, y, b, true, &f);
z2 = x;
asm("xor\t%1,%1\n\t"
"shrd\t%5,%4,%0"
: "+rm"(z2), "=&r"(unflag), "=@ccc"(cf), "=@cco"(of)
: "r"(y), "c"(b)
: "cc");
ASSERT_EQ(z2, z1);
ASSERT_EQ(cf, GetFlag(f, FLAGS_CF));
if (b <= 1) ASSERT_EQ(of, GetFlag(f, FLAGS_OF));
}
}
}
}
TEST(shld16, smoke) {
uint32_t f;
int i, j, k;
uint8_t b, cf, of;
uint16_t x, y, z1, z2, unflag;
for (i = 0; i < ARRAYLEN(kNumbers); ++i) {
x = kNumbers[i];
for (j = 0; j < ARRAYLEN(kNumbers); ++j) {
y = kNumbers[j];
for (k = 0; k < ARRAYLEN(kNumbers); ++k) {
f = 0;
cf = 0;
of = 0;
b = kNumbers[k];
if (b > 16) continue;
z1 = BsuDoubleShift(1, x, y, b, false, &f);
z2 = x;
asm("xor\t%1,%1\n\t"
"shldw\t%5,%4,%0"
: "+rm"(z2), "=&r"(unflag), "=@ccc"(cf), "=@cco"(of)
: "r"(y), "c"(b)
: "cc");
ASSERT_EQ(z2, z1);
ASSERT_EQ(cf, GetFlag(f, FLAGS_CF));
if (b <= 1) ASSERT_EQ(of, GetFlag(f, FLAGS_OF));
}
}
}
}
TEST(shld32, smoke) {
int i, j, k;
uint8_t b, cf, of;
uint32_t x, y, z1, f, z2, unflag;
for (i = 0; i < ARRAYLEN(kNumbers); ++i) {
x = kNumbers[i];
for (j = 0; j < ARRAYLEN(kNumbers); ++j) {
y = kNumbers[j];
for (k = 0; k < ARRAYLEN(kNumbers); ++k) {
f = 0;
cf = 0;
of = 0;
b = kNumbers[k];
if (b > 32) continue;
z1 = BsuDoubleShift(2, x, y, b, false, &f);
z2 = x;
asm("xor\t%1,%1\n\t"
"shld\t%5,%4,%0"
: "+rm"(z2), "=&r"(unflag), "=@ccc"(cf), "=@cco"(of)
: "r"(y), "c"(b)
: "cc");
ASSERT_EQ(z2, z1);
ASSERT_EQ(cf, GetFlag(f, FLAGS_CF));
if (b <= 1) ASSERT_EQ(of, GetFlag(f, FLAGS_OF));
}
}
}
}
TEST(shld64, smoke) {
uint32_t f;
int i, j, k;
uint8_t b, cf, of;
uint64_t x, y, z1, z2, unflag;
for (i = 0; i < ARRAYLEN(kNumbers); ++i) {
x = kNumbers[i];
for (j = 0; j < ARRAYLEN(kNumbers); ++j) {
y = kNumbers[j];
for (k = 0; k < ARRAYLEN(kNumbers); ++k) {
f = 0;
cf = 0;
of = 0;
b = kNumbers[k];
if (b > 64) continue;
z1 = BsuDoubleShift(3, x, y, b, false, &f);
z2 = x;
asm("xor\t%1,%1\n\t"
"shldq\t%5,%4,%0"
: "+rm"(z2), "=&r"(unflag), "=@ccc"(cf), "=@cco"(of)
: "r"(y), "c"(b)
: "cc");
ASSERT_EQ(z2, z1);
ASSERT_EQ(cf, GetFlag(f, FLAGS_CF));
if (b <= 1) ASSERT_EQ(of, GetFlag(f, FLAGS_OF));
}
}
}
}
#endif /* __x86_64__ */
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