mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-06-27 06:48:31 +00:00
Make numerous improvements
- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands
This commit is contained in:
Justine Tunney
parent
fa7b4f5bd1
commit
39bf41f4eb
806 changed files with 77494 additions and 63859 deletions
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@ -48,13 +48,9 @@ static bool have_getrandom;
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* - RtlGenRandom() on Windows
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* - getentropy() on XNU and OpenBSD
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* - sysctl(KERN_ARND) on FreeBSD and NetBSD
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* - RDSEED on Broadwell+ and Xen+ unless GRND_NORDRND
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* - RDRAND on Ivybridge+ and Xen+ unless GRND_NORDRND
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*
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* The following flags may be specified:
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*
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* - GRND_NORDRND: Don't source rando from hardware.
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* - GRND_NOSYSTEM: Don't source rando from operating system.
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* - GRND_RANDOM: Halt the entire system while I tap an entropy pool
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* so small that it's hard to use statistics to test if it's random
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* - GRND_NONBLOCK: Do not wait for i/o events or me to jiggle my
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@ -75,137 +71,44 @@ ssize_t getrandom(void *p, size_t n, unsigned f) {
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int fd, cmd[2];
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sigset_t neu, old;
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if (n > 256) n = 256;
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if (!IsTiny() &&
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((f & ~(GRND_RANDOM | GRND_NONBLOCK | GRND_NORDRND | GRND_NOSYSTEM)) ||
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(f & (GRND_NORDRND | GRND_NOSYSTEM)) ==
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(GRND_NORDRND | GRND_NOSYSTEM))) {
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return einval();
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}
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if (!(f & GRND_NOSYSTEM)) {
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if (IsWindows()) {
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if (RtlGenRandom(p, n)) {
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rc = n;
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} else {
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return __winerr();
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}
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} else if (IsFreebsd() || IsNetbsd()) {
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if (IsFreebsd()) {
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cmd[0] = 1; /* CTL_KERN */
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cmd[1] = 37; /* KERN_ARND */
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} else {
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cmd[0] = 1; /* CTL_KERN */
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cmd[1] = 81; /* KERN_ARND */
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}
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m = n;
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if ((rc = sysctl(cmd, 2, p, &m, 0, 0)) != -1) {
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rc = m;
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}
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} else if (have_getrandom) {
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if ((rc = sys_getrandom(p, n, f & (GRND_RANDOM | GRND_NONBLOCK))) != -1) {
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if (!rc && (IsXnu() || IsOpenbsd())) {
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rc = n;
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}
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}
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} else if ((fd = __sys_openat(
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AT_FDCWD,
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(f & GRND_RANDOM) ? "/dev/random" : "/dev/urandom",
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O_RDONLY | ((f & GRND_NONBLOCK) ? O_NONBLOCK : 0), 0)) !=
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-1) {
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rc = sys_read(fd, p, n);
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sys_close(fd);
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if ((f & ~(GRND_RANDOM | GRND_NONBLOCK))) return einval();
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if (IsWindows()) {
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if (RtlGenRandom(p, n)) {
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rc = n;
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} else {
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return enosys();
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return __winerr();
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}
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} else if (IsFreebsd() || IsNetbsd()) {
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if (IsFreebsd()) {
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cmd[0] = 1; /* CTL_KERN */
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cmd[1] = 37; /* KERN_ARND */
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} else {
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cmd[0] = 1; /* CTL_KERN */
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cmd[1] = 81; /* KERN_ARND */
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}
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m = n;
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if ((rc = sysctl(cmd, 2, p, &m, 0, 0)) != -1) {
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rc = m;
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}
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} else if (have_getrandom) {
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if ((rc = sys_getrandom(p, n, f & (GRND_RANDOM | GRND_NONBLOCK))) != -1) {
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if (!rc && (IsXnu() || IsOpenbsd())) {
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rc = n;
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}
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}
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} else if ((fd = __sys_openat(
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AT_FDCWD, (f & GRND_RANDOM) ? "/dev/random" : "/dev/urandom",
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O_RDONLY | ((f & GRND_NONBLOCK) ? O_NONBLOCK : 0), 0)) !=
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-1) {
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rc = sys_read(fd, p, n);
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sys_close(fd);
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} else {
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memset(p, 0, n);
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rc = n;
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}
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if (rc != -1) {
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if (!IsTiny()) {
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if (rc < 0 || rc > n) {
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abort();
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}
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if (f & (GRND_RANDOM | GRND_NONBLOCK)) {
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if (n && !rc) {
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abort();
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}
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} else {
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if (rc != n) {
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abort();
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}
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}
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}
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if (!(f & GRND_NORDRND)) {
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if (X86_HAVE(RDSEED)) {
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for (i = j = 0; i < rc; ++j) {
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/* CF=1: Destination register valid. Quoth Intel DRNG-SIG 4.1.3 */
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asm volatile(CFLAG_ASM("rdseed\t%1")
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: CFLAG_CONSTRAINT(cf), "=r"(x)
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: /* no inputs */
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: "cc");
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if (cf) {
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j = 0;
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if (i + 8 <= rc) {
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x ^= READ64LE((char *)p + i);
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WRITE64LE((char *)p + i, x);
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i += 8;
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} else {
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for (; i < rc; x >>= 8) {
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((char *)p)[i++] ^= x;
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}
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}
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} else if (j == 10) {
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asm volatile("pause");
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}
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}
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rc = i;
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} else if (X86_HAVE(RDRND)) {
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for (i = j = 0; i < rc; ++j) {
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/* CF=1: Destination register valid. Quoth Intel DRNG-SIG 4.1.3 */
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asm volatile(CFLAG_ASM("rdrand\t%1")
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: CFLAG_CONSTRAINT(cf), "=r"(x)
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: /* no inputs */
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: "cc");
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if (cf) {
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j = 0;
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if (i + 8 <= rc) {
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x ^= READ64LE((char *)p + i);
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WRITE64LE((char *)p + i, x);
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i += 8;
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} else {
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for (; i < rc; x >>= 8) {
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((char *)p)[i++] ^= x;
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}
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}
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} else if (j == 10) {
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asm volatile("pause");
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}
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}
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rc = i;
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} else if (f & GRND_NOSYSTEM) {
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return enosys();
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}
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}
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return enosys();
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}
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return rc;
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}
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static textstartup void getrandom_init(int argc, char **argv, char **envp,
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intptr_t *auxv) {
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extern unsigned kMutableCpuids[KCPUIDS_LEN][4] asm("kCpuids");
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/*
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* Clear RDRAND on AMD models before Zen and then some
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* since it's not only slow but can freeze after sleep
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* https://bugzilla.redhat.com/show_bug.cgi?id=1150286
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*/
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if ((X86_HAVE(RDRND) || X86_HAVE(RDSEED)) &&
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(IsAuthenticAMD() &&
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(kX86CpuFamily < 0x17 ||
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(kX86CpuFamily == 0x17 &&
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(0x70 <= kX86CpuModel && kX86CpuModel <= 0x7F))))) {
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kMutableCpuids[KCPUIDS_1H][KCPUIDS_ECX] &= ~(1u << 30);
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kMutableCpuids[KCPUIDS_7H][KCPUIDS_EBX] &= ~(1u << 18);
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}
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static textstartup void getrandom_init(void) {
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if (sys_getrandom(0, 0, 0) == 0) {
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have_getrandom = true;
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}
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