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Trim down executable sizes

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This commit is contained in:
Justine Tunney 2021-02-11 08:37:18 -08:00
parent ec69413f83
commit bfa8581537
19 changed files with 1176 additions and 131 deletions
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28
libc/runtime/winmain.greg.c
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@ -35,6 +35,7 @@
#include "libc/nt/pedef.internal.h"
#include "libc/nt/process.h"
#include "libc/nt/runtime.h"
#include "libc/nt/struct/teb.h"
#include "libc/runtime/directmap.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/memtrack.h"
@ -64,11 +65,11 @@ static noasan textwindows void MakeLongDoubleLongAgain(void) {
asm volatile("fldcw\t%0" : /* no outputs */ : "m"(x87cw));
}
static noasan textwindows void NormalizeCmdExe(void) {
static noasan textwindows void NormalizeCmdExe(int version) {
uint32_t mode;
int64_t handle, hstdin, hstdout, hstderr;
if ((int)weakaddr("v_ntsubsystem") == kNtImageSubsystemWindowsCui &&
NtGetVersion() >= kNtVersionWindows10) {
version >= 10) {
hstdin = GetStdHandle(pushpop(kNtStdInputHandle));
hstdout = GetStdHandle(pushpop(kNtStdOutputHandle));
hstderr = GetStdHandle(pushpop(kNtStdErrorHandle));
@ -86,17 +87,16 @@ static noasan textwindows void NormalizeCmdExe(void) {
SetTrueColor();
SetConsoleOutputCP(kNtCpUtf8);
GetConsoleMode(handle, &mode);
SetConsoleMode(handle, mode | kNtEnableProcessedOutput |
kNtEnableWrapAtEolOutput |
(NtGetVersion() >= kNtVersionWindows10
? kNtEnableVirtualTerminalProcessing
: 0));
SetConsoleMode(
handle, mode | kNtEnableProcessedOutput | kNtEnableWrapAtEolOutput |
(version >= 10 ? kNtEnableVirtualTerminalProcessing : 0));
}
}
}
static noasan textwindows wontreturn void WinMainNew(void) {
int64_t h;
int version;
size_t size;
int i, count;
uint64_t addr;
@ -105,13 +105,15 @@ static noasan textwindows wontreturn void WinMainNew(void) {
const char16_t *env16;
extern char os asm("__hostos");
os = WINDOWS; /* madness https://news.ycombinator.com/item?id=21019722 */
NormalizeCmdExe();
addr = NtGetVersion() < kNtVersionWindows10 ? 0xff00000 : 0x777000000000;
version = NtGetPeb()->OSMajorVersion;
NormalizeCmdExe(version);
addr = version < 10 ? 0xff00000 : 0x777000000000;
size = ROUNDUP(STACKSIZE + sizeof(struct WinArgs), FRAMESIZE);
_mmi.p[0].h =
sys_mmap_nt((char *)addr, size, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE, -1, 0)
.maphandle;
MapViewOfFileExNuma((_mmi.p[0].h = CreateFileMappingNuma(
-1, &kNtIsInheritable, kNtPageExecuteReadwrite,
size >> 32, size, NULL, kNtNumaNoPreferredNode)),
kNtFileMapWrite | kNtFileMapExecute, 0, 0, size,
(void *)addr, kNtNumaNoPreferredNode);
_mmi.p[0].x = addr >> 16;
_mmi.p[0].y = (addr >> 16) + ((size >> 16) - 1);
_mmi.p[0].prot = PROT_READ | PROT_WRITE | PROT_EXEC;