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Make more functions friendly to Address Sanitizer

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This commit is contained in:
Justine Tunney 2021-02-02 03:45:31 -08:00
parent 3ab76b2312
commit cbfd4ccd1e
70 changed files with 1267 additions and 291 deletions
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2
libc/calls/calls.mk
View file

@ -21,6 +21,7 @@ LIBC_CALLS_A_FILES := \
$(wildcard libc/calls/struct/*) \
$(wildcard libc/calls/*)
LIBC_CALLS_A_HDRS = $(filter %.h,$(LIBC_CALLS_A_FILES))
LIBC_CALLS_A_INCS = $(filter %.inc,$(LIBC_CALLS_A_FILES))
LIBC_CALLS_A_SRCS_S = $(filter %.S,$(LIBC_CALLS_A_FILES))
LIBC_CALLS_A_SRCS_C = $(filter %.c,$(LIBC_CALLS_A_FILES))
@ -86,6 +87,7 @@ o/$(MODE)/libc/calls/mkntenvblock.o: \
LIBC_CALLS_LIBS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)))
LIBC_CALLS_SRCS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_SRCS))
LIBC_CALLS_HDRS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_HDRS))
LIBC_CALLS_INCS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_INCS))
LIBC_CALLS_BINS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_BINS))
LIBC_CALLS_CHECKS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_CHECKS))
LIBC_CALLS_OBJS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_OBJS))

3
libc/calls/dup3-sysv.c
View file

@ -25,13 +25,14 @@ int32_t dup3$sysv(int32_t oldfd, int32_t newfd, int flags) {
static bool once, demodernize;
int olderr, fd;
if (!once) {
once = true;
olderr = errno;
fd = __dup3$sysv(oldfd, newfd, flags);
if ((fd == -1 && errno == ENOSYS) || fd == __NR_dup3_linux) {
demodernize = true;
once = true;
errno = olderr;
} else {
once = true;
return fd;
}
} else if (!demodernize) {

4
libc/calls/madvise-nt.c
View file

@ -29,9 +29,9 @@ forceinline typeof(PrefetchVirtualMemory) *GetPrefetchVirtualMemory(void) {
static bool once;
static typeof(PrefetchVirtualMemory) *PrefetchVirtualMemory_;
if (!once) {
once = true;
PrefetchVirtualMemory_ = /* win8.1+ */
GetProcAddressModule("Kernel32.dll", "PrefetchVirtualMemory");
once = true;
}
return PrefetchVirtualMemory_;
}
@ -40,9 +40,9 @@ forceinline typeof(OfferVirtualMemory) *GetOfferVirtualMemory(void) {
static bool once;
static typeof(OfferVirtualMemory) *OfferVirtualMemory_;
if (!once) {
once = true;
OfferVirtualMemory_ = /* win8.1+ */
GetProcAddressModule("Kernel32.dll", "OfferVirtualMemory");
once = true;
}
return OfferVirtualMemory_;
}

19
libc/calls/now.c
View file

@ -23,6 +23,7 @@
#include "libc/dce.h"
#include "libc/nexgen32e/rdtsc.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/clock.h"
#include "libc/time/time.h"
@ -55,19 +56,21 @@ static long double MeasureNanosPerCycle(void) {
}
static void InitTime(void) {
g_now.cpn = MeasureNanosPerCycle();
g_now.r0 = dtime(CLOCK_REALTIME);
g_now.k0 = rdtsc();
g_now.once = true;
struct Now now;
now.cpn = MeasureNanosPerCycle();
now.r0 = dtime(CLOCK_REALTIME);
now.k0 = rdtsc();
now.once = true;
memcpy(&g_now, &now, sizeof(now));
}
long double converttickstonanos(uint64_t ticks) {
long double ConvertTicksToNanos(uint64_t ticks) {
if (!g_now.once) InitTime();
return ticks * g_now.cpn; /* pico scale */
}
long double converttickstoseconds(uint64_t ticks) {
return 1 / 1e9 * converttickstonanos(ticks);
static long double ConvertTicksToSeconds(uint64_t ticks) {
return 1 / 1e9 * ConvertTicksToNanos(ticks);
}
long double nowl$sys(void) {
@ -78,5 +81,5 @@ long double nowl$art(void) {
uint64_t ticks;
if (!g_now.once) InitTime();
ticks = unsignedsubtract(rdtsc(), g_now.k0);
return g_now.r0 + converttickstoseconds(ticks);
return g_now.r0 + ConvertTicksToSeconds(ticks);
}