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Add x86_64-linux-gnu emulator

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I wanted a tiny scriptable meltdown proof way to run userspace programs
and visualize how program execution impacts memory. It helps to explain
how things like Actually Portable Executable works. It can show you how
the GCC generated code is going about manipulating matrices and more. I
didn't feel fully comfortable with Qemu and Bochs because I'm not smart
enough to understand them. I wanted something like gVisor but with much
stronger levels of assurances. I wanted a single binary that'll run, on
all major operating systems with an embedded GPL barrier ZIP filesystem
that is tiny enough to transpile to JavaScript and run in browsers too.

https://justine.storage.googleapis.com/emulator625.mp4
This commit is contained in:
Justine Tunney 2020-08-25 04:23:25 -07:00
parent 467504308a
commit f4f4caab0e
1052 changed files with 65667 additions and 7825 deletions
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13
libc/testlib/testlib.h
View file

@ -1,6 +1,6 @@
#ifndef COSMOPOLITAN_LIBC_TESTLIB_H_
#define COSMOPOLITAN_LIBC_TESTLIB_H_
#include "libc/bits/bits.h"
#include "libc/bits/weaken.h"
#include "libc/runtime/gc.h"
#include "libc/testlib/ugly.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
@ -15,7 +15,7 @@ COSMOPOLITAN_C_START_
* Test cases are guaranteed by the linker to be run in order, sorted by
* the (SUITE, NAME) tuple passed here.
*/
#define TEST(SUITE, NAME) __TEST_PROTOTYPE(SUITE, NAME, __TEST_ARRAY)
#define TEST(SUITE, NAME) __TEST_PROTOTYPE(SUITE, NAME, __TEST_ARRAY, )
/**
* Declares function that globally modifies program state.
@ -48,7 +48,7 @@ COSMOPOLITAN_C_START_
*/
#define BENCH(SUITE, NAME) \
STATIC_YOINK("__bench_start"); \
__TEST_PROTOTYPE(SUITE, NAME, __BENCH_ARRAY)
__TEST_PROTOTYPE(SUITE, NAME, __BENCH_ARRAY, optimizespeed)
#define ASSERT_GE(C, X) _TEST2("ASSERT_GE", C, >=, (X), #C, " ≥ ", #X, 1)
#define ASSERT_GT(C, X) _TEST2("ASSERT_GT", C, >, (X), #C, " > ", #X, 1)
@ -82,9 +82,11 @@ COSMOPOLITAN_C_START_
#define ASSERT_EQ(WANT, GOT, ...) \
__TEST_EQ(assert, __FILE__, __LINE__, __FUNCTION__, #WANT, #GOT, WANT, GOT, \
__VA_ARGS__)
#define EXPECT_EQ(WANT, GOT, ...) \
__TEST_EQ(expect, __FILE__, __LINE__, __FUNCTION__, #WANT, #GOT, WANT, GOT, \
__VA_ARGS__)
#define __TEST_EQ(KIND, FILE, LINE, FUNC, WANTCODE, GOTCODE, WANT, GOT, ...) \
({ \
autotype(GOT) Got = _I(GOT); \
@ -272,6 +274,7 @@ void *tunbing(const char16_t *)
void *tunbinga(size_t, const char16_t *)
paramsnonnull() returnsnonnull returnspointerwithnoaliases nodiscard
attributeallocalign((1));
void testlib_clearxmmregisters(void);
#define tgc(TMEM) \
({ \
@ -533,8 +536,8 @@ forceinline void assertStartsWith(FILIFU_ARGS size_t cw, const char *prefix,
if (testlib_startswith(cw, s, prefix)) return;
if (g_testlib_shoulddebugbreak) DebugBreak();
testlib_showerror(file, line, func, "assertStartsWith", "≠", gotcode,
testlib_formatstr(1, s, -1),
testlib_formatstr(1, prefix, -1));
testlib_formatstr(1, prefix, -1),
testlib_formatstr(1, s, -1));
testlib_onfail2(isfatal);
}