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Pay off more technical debt

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This makes breaking changes to add underscores to many non-standard
function names provided by the c library. MODE=tiny is now tinier and
we now use smaller locks that are better for tiny apps in this mode.
Some headers have been renamed to be in the same folder as the build
package, so it'll be easier to know which build dependency is needed.
Certain old misguided interfaces have been removed. Intel intrinsics
headers are now listed in libc/isystem (but not in the amalgamation)
to help further improve open source compatibility. Header complexity
has also been reduced. Lastly, more shell scripts are now available.
This commit is contained in:
Justine Tunney 2022-09-12 23:10:38 -07:00
parent b69f3d2488
commit 6f7d0cb1c3
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GPG key ID: BE714B4575D6E328
960 changed files with 4072 additions and 4873 deletions
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19
libc/runtime/mmap.c
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@ -19,7 +19,6 @@
#include "libc/assert.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
@ -28,8 +27,8 @@
#include "libc/intrin/bits.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/likely.h"
#include "libc/thread/thread.h"
#include "libc/intrin/safemacros.internal.h"
#include "libc/intrin/strace.internal.h"
#include "libc/intrin/weaken.h"
#include "libc/limits.h"
#include "libc/log/backtrace.internal.h"
@ -49,6 +48,7 @@
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/prot.h"
#include "libc/sysv/errfuns.h"
#include "libc/thread/thread.h"
#define MAP_ANONYMOUS_linux 0x00000020
#define MAP_ANONYMOUS_openbsd 0x00001000
@ -64,10 +64,9 @@
#define FRAME(x) ((int)((intptr_t)(x) >> 16))
static wontreturn void OnUnrecoverableMmapError(const char *s) {
if (weaken(__die)) weaken(__die)();
if (_weaken(__die)) _weaken(__die)();
STRACE("%s %m", s);
__restorewintty();
_Exit(199);
_Exitr(199);
}
static noasan inline bool OverlapsExistingMapping(char *p, size_t n) {
@ -165,8 +164,8 @@ static noasan void *FinishMemory(void *addr, size_t size, int prot, int flags,
}
return MAP_FAILED;
}
if (weaken(__asan_map_shadow) && !OverlapsShadowSpace(addr, size)) {
weaken(__asan_map_shadow)((intptr_t)addr, size);
if (_weaken(__asan_map_shadow) && !OverlapsShadowSpace(addr, size)) {
_weaken(__asan_map_shadow)((intptr_t)addr, size);
}
return addr;
}
@ -227,8 +226,8 @@ static textwindows dontinline noasan void *MapMemories(char *addr, size_t size,
OnUnrecoverableMmapError("MapMemories unrecoverable #2");
}
}
if (weaken(__asan_map_shadow) && !OverlapsShadowSpace(addr, size)) {
weaken(__asan_map_shadow)((intptr_t)addr, size);
if (_weaken(__asan_map_shadow) && !OverlapsShadowSpace(addr, size)) {
_weaken(__asan_map_shadow)((intptr_t)addr, size);
}
return addr;
}
@ -323,7 +322,7 @@ static noasan inline void *Mmap(void *addr, size_t size, int prot, int flags,
return VIP(einval());
}
a = max(1, rounddown2pow(size) >> 16);
a = max(1, _rounddown2pow(size) >> 16);
f = (flags & ~MAP_FIXED_NOREPLACE) | MAP_FIXED;
if (flags & MAP_FIXED) {