mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 12:03:41 +00:00
e75ffde09e
You can now build Cosmopolitan with Clang:
make -j8 MODE=llvm
o/llvm/examples/hello.com
The assembler and linker code is now friendly to LLVM too.
So it's not needed to configure Clang to use binutils under
the hood. If you love LLVM then you can now use pure LLVM.
348 lines
12 KiB
C
348 lines
12 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/fmt/bing.internal.h"
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#include "libc/math.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/gc.h"
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#include "libc/stdio/stdio.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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#include "tool/build/lib/endian.h"
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#include "tool/build/lib/fpu.h"
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#include "tool/build/lib/machine.h"
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#include "tool/build/lib/memory.h"
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const uint8_t kPi80[] = {
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0xd9, 0xe8, // fld1
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0xb8, 0x0a, 0x00, 0x00, 0x00, // mov $0xa,%eax
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0x31, 0xd2, // xor %edx,%edx
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0xd9, 0xee, // fldz
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0x48, 0x98, // cltq
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0x48, 0x39, 0xc2, // cmp %rax,%rdx
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0xd9, 0x05, 0x1a, 0x00, 0x00, 0x00, // flds 0x1a(%rip)
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0x7d, 0x13, // jge 2b <pi80+0x2b>
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0xde, 0xc1, // faddp
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0x48, 0xff, 0xc2, // inc %rdx
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0xd9, 0xfa, // fsqrt
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0xd9, 0x05, 0x0f, 0x00, 0x00, 0x00, // flds 15(%rip)
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0xd8, 0xc9, // fmul %st(1),%st
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0xde, 0xca, // fmulp %st,%st(2)
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0xeb, 0xe2, // jmp d <pi80+0xd>
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0xdd, 0xd9, // fstp %st(1)
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0xde, 0xf1, // fdivp
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0xf4, // hlt
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0x00, 0x00, 0x00, 0x40, // .float 2.0
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0x00, 0x00, 0x00, 0x3f, // .float 0.5
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};
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const uint8_t kTenthprime[] = {
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0x31, 0xd2, // xor %edx,%edx
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0x45, 0x31, 0xc0, // xor %r8d,%r8d
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0x31, 0xc9, // xor %ecx,%ecx
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0xbe, 0x03, 0x00, 0x00, 0x00, // mov $0x3,%esi
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0x41, 0xff, 0xc0, // inc %r8d
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0x44, 0x89, 0xc0, // mov %r8d,%eax
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0x83, 0xf9, 0x0a, // cmp $0xa,%ecx
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0x74, 0x0b, // je 20
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0x99, // cltd
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0xf7, 0xfe, // idiv %esi
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0x83, 0xfa, 0x01, // cmp $0x1,%edx
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0x83, 0xd9, 0xff, // sbb $-1,%ecx
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0xeb, 0xea, // jmp a
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0xf4, // hlt
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};
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const uint8_t kTenthprime2[] = {
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0xE8, 0x11, 0x00, 0x00, 0x00, //
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0xF4, //
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0x89, 0xF8, //
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0xB9, 0x03, 0x00, 0x00, 0x00, //
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0x99, //
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0xF7, 0xF9, //
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0x85, 0xD2, //
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0x0F, 0x95, 0xC0, //
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0xC3, //
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0x55, //
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0x48, 0x89, 0xE5, //
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0x31, 0xF6, //
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0x45, 0x31, 0xC0, //
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0x44, 0x89, 0xC7, //
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0xE8, 0xDF, 0xFF, 0xFF, 0xFF, //
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0x0F, 0xB6, 0xC0, //
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0x66, 0x83, 0xF8, 0x01, //
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0x83, 0xDE, 0xFF, //
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0x41, 0xFF, 0xC0, //
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0x83, 0xFE, 0x0A, //
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0x75, 0xE6, //
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0x44, 0x89, 0xC0, //
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0x5D, //
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0xC3, //
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};
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struct Machine *m;
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void SetUp(void) {
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m = NewMachine();
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m->mode = XED_MACHINE_MODE_LONG_64;
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m->cr3 = AllocateLinearPage(m);
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ReserveVirtual(m, 0, 4096, 0x0207);
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ASSERT_EQ(0x1007, Read64(m->real.p + 0x0000)); // PML4T
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ASSERT_EQ(0x2007, Read64(m->real.p + 0x1000)); // PDPT
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ASSERT_EQ(0x3007, Read64(m->real.p + 0x2000)); // PDE
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ASSERT_EQ(0x0207, Read64(m->real.p + 0x3000)); // PT
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ASSERT_EQ(0x4000, m->real.i);
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ASSERT_EQ(1, m->memstat.reserved);
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ASSERT_EQ(4, m->memstat.committed);
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ASSERT_EQ(4, m->memstat.allocated);
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ASSERT_EQ(3, m->memstat.pagetables);
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Write64(m->sp, 4096);
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}
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void TearDown(void) {
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FreeVirtual(m, 0, 4096);
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ASSERT_EQ(0x1007, Read64(m->real.p + 0x0000)); // PML4T
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ASSERT_EQ(0x2007, Read64(m->real.p + 0x1000)); // PDPT
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ASSERT_EQ(0x3007, Read64(m->real.p + 0x2000)); // PDE
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ASSERT_EQ(0x0000, Read64(m->real.p + 0x3000)); // PT
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FreeMachine(m);
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}
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int ExecuteUntilHalt(struct Machine *m) {
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int rc;
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if (!(rc = setjmp(m->onhalt))) {
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for (;;) {
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LoadInstruction(m);
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ExecuteInstruction(m);
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}
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} else {
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return rc;
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}
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}
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TEST(machine, test) {
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VirtualRecv(m, 0, kTenthprime, sizeof(kTenthprime));
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ASSERT_EQ(kMachineHalt, ExecuteUntilHalt(m));
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ASSERT_EQ(15, Read32(m->ax));
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}
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TEST(machine, testFpu) {
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VirtualRecv(m, 0, kPi80, sizeof(kPi80));
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ASSERT_EQ(kMachineHalt, ExecuteUntilHalt(m));
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ASSERT_TRUE(fabsl(3.14159 - FpuPop(m)) < 0.0001);
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m->ip = 0;
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ASSERT_EQ(kMachineHalt, ExecuteUntilHalt(m));
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ASSERT_TRUE(fabsl(3.14159 - FpuPop(m)) < 0.0001);
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}
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BENCH(machine, benchPrimeNumberPrograms) {
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VirtualRecv(m, 0, kTenthprime2, sizeof(kTenthprime2));
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EZBENCH2("tenthprime2", m->ip = 0, ExecuteUntilHalt(m));
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ASSERT_EQ(15, Read32(m->ax));
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VirtualRecv(m, 0, kTenthprime, sizeof(kTenthprime));
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EZBENCH2("tenthprime", m->ip = 0, ExecuteUntilHalt(m));
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ASSERT_EQ(15, Read32(m->ax));
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}
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static void machine_benchFpu_fn(void) {
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ExecuteUntilHalt(m);
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FpuPop(m);
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}
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BENCH(machine, benchFpu) {
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VirtualRecv(m, 0, kPi80, sizeof(kPi80));
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EZBENCH2("pi80", m->ip = 0, machine_benchFpu_fn());
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}
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BENCH(machine, benchLoadExec2) {
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uint8_t kMovCode[] = {0xbe, 0x03, 0x00, 0x00, 0x00};
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VirtualRecv(m, 0, kMovCode, sizeof(kMovCode));
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LoadInstruction(m);
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EZBENCH2("mov", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchLoadExec3) {
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uint8_t kMovdCode[] = {0x66, 0x0f, 0x6e, 0xc0};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kMovdCode, sizeof(kMovdCode));
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LoadInstruction(m);
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EZBENCH2("movd", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchLoadExec4) {
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uint8_t kAddpsRegregCode[] = {0x0f, 0x58, 0xC0};
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uint8_t kAddpsMemregCode[] = {0x0f, 0x58, 0x00};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kAddpsRegregCode, sizeof(kAddpsRegregCode));
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LoadInstruction(m);
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EZBENCH2("addps reg reg", m->ip = 0, ExecuteInstruction(m));
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VirtualRecv(m, 0, kAddpsMemregCode, sizeof(kAddpsMemregCode));
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LoadInstruction(m);
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EZBENCH2("addps mem reg", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchLoadExec5) {
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uint8_t kPaddwRegregCode[] = {0x66, 0x0F, 0xFD, 0xC0};
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uint8_t kPaddwMemregCode[] = {0x66, 0x0F, 0xFD, 0x00};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kPaddwRegregCode, sizeof(kPaddwRegregCode));
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LoadInstruction(m);
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EZBENCH2("paddw", m->ip = 0, ExecuteInstruction(m));
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VirtualRecv(m, 0, kPaddwMemregCode, sizeof(kPaddwMemregCode));
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LoadInstruction(m);
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EZBENCH2("paddw mem", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchLoadExec6) {
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uint8_t kPsubqRegregCode[] = {0x66, 0x0F, 0xFB, 0xC0};
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uint8_t kPsubqMemregCode[] = {0x66, 0x0F, 0xFB, 0x00};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kPsubqRegregCode, sizeof(kPsubqRegregCode));
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LoadInstruction(m);
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EZBENCH2("psubq", m->ip = 0, ExecuteInstruction(m));
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VirtualRecv(m, 0, kPsubqMemregCode, sizeof(kPsubqMemregCode));
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LoadInstruction(m);
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EZBENCH2("psubq mem", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchAddqMem) {
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uint8_t kAddMemregCode[] = {0x48, 0x03, 0x08};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kAddMemregCode, sizeof(kAddMemregCode));
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LoadInstruction(m);
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EZBENCH2("addq mem", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchAddlMem) {
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uint8_t kAddMemregCode[] = {0x03, 0x08};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kAddMemregCode, sizeof(kAddMemregCode));
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LoadInstruction(m);
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EZBENCH2("addl mem", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchAddq) {
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uint8_t kAddqCode[] = {0x48, 0x01, 0xd8};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kAddqCode, sizeof(kAddqCode));
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LoadInstruction(m);
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EZBENCH2("addq", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchAddb) {
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uint8_t kAddbCode[] = {0x00, 0xd8};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kAddbCode, sizeof(kAddbCode));
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LoadInstruction(m);
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EZBENCH2("addb", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchXorReg) {
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VirtualRecv(m, 0, kTenthprime, sizeof(kTenthprime));
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LoadInstruction(m);
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EZBENCH2("xor", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchLoadExec8) {
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uint8_t kFchsCode[] = {0xd9, 0xe0};
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Write64(m->ax, 0);
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OpFinit(m);
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*FpuSt(m, 0) = M_PI;
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FpuSetTag(m, 0, kFpuTagValid);
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VirtualRecv(m, 0, kFchsCode, sizeof(kFchsCode));
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LoadInstruction(m);
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EZBENCH2("fchs", m->ip = 0, ExecuteInstruction(m));
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}
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static void machine_benchPushpop_fn(void) {
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LoadInstruction(m);
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ExecuteInstruction(m);
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LoadInstruction(m);
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ExecuteInstruction(m);
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}
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BENCH(machine, benchPushpop) {
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uint8_t kPushpop[] = {0x50, 0x58};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kPushpop, sizeof(kPushpop));
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EZBENCH2("pushpop", m->ip = 0, machine_benchPushpop_fn());
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}
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BENCH(machine, benchPause) {
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uint8_t kPause[] = {0xf3, 0x90};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kPause, sizeof(kPause));
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LoadInstruction(m);
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EZBENCH2("pause", m->ip = 0, ExecuteInstruction(m));
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}
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BENCH(machine, benchClc) {
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uint8_t kClc[] = {0xf8};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kClc, sizeof(kClc));
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LoadInstruction(m);
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EZBENCH2("clc", m->ip = 0, ExecuteInstruction(m));
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}
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static void machine_benchNop_fn(void) {
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LoadInstruction(m);
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ExecuteInstruction(m);
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}
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BENCH(machine, benchNop) {
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uint8_t kNop[] = {0x90};
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Write64(m->ax, 0);
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VirtualRecv(m, 0, kNop, sizeof(kNop));
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LoadInstruction(m);
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EZBENCH2("nop", m->ip = 0, ExecuteInstruction(m));
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EZBENCH2("nop w/ load", m->ip = 0, machine_benchNop_fn());
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}
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TEST(x87, fprem1) {
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// 1 rem -1.5
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const uint8_t prog[] = {
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0xd9, 0x05, 0x05, 0x00, 0x00, 0x00, // flds
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0xd9, 0xe8, // fld1
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0xd9, 0xf8, // fprem
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0xf4, // hlt
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0x00, 0x00, 0xc0, 0xbf, // .float -1.5
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};
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VirtualRecv(m, 0, prog, sizeof(prog));
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ASSERT_EQ(kMachineHalt, ExecuteUntilHalt(m));
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ASSERT_LDBL_EQ(1, FpuPop(m));
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}
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TEST(x87, fprem2) {
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// 12300000000000000. rem .0000000000000123
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const uint8_t prog[] = {
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0xdd, 0x05, 0x11, 0x00, 0x00, 0x00, // fldl
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0xdd, 0x05, 0x03, 0x00, 0x00, 0x00, // fldl
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0xd9, 0xf8, // fprem
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0xf4, // hlt
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0x00, 0x60, 0x5e, 0x75, 0x64, 0xd9, 0x45, 0x43, //
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0x5b, 0x14, 0xea, 0x9d, 0x77, 0xb2, 0x0b, 0x3d, //
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};
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VirtualRecv(m, 0, prog, sizeof(prog));
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ASSERT_EQ(kMachineHalt, ExecuteUntilHalt(m));
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ASSERT_LDBL_EQ(1.1766221079117338e-14, FpuPop(m));
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}
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TEST(machine, sizeIsReasonable) {
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ASSERT_LE(sizeof(struct Machine), 65536 * 3);
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}
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