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https://github.com/jart/cosmopolitan.git
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39bf41f4eb
- 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
96 lines
3.6 KiB
C
96 lines
3.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/macros.internal.h"
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#include "libc/math.h"
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#include "libc/mem/mem.h"
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#include "libc/str/str.h"
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#include "tool/build/lib/flags.h"
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#include "tool/build/lib/machine.h"
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#define LDBL 3
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#define RINT 0
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static void ResetFpu(struct Machine *m) {
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long i;
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long double fval;
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fval = -NAN;
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m->fpu.sw = 0;
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m->fpu.tw = -1;
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m->fpu.cw = 0;
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m->fpu.im = true;
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m->fpu.dm = true;
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m->fpu.zm = true;
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m->fpu.om = true;
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m->fpu.um = true;
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m->fpu.pm = true;
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m->fpu.pc = LDBL;
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m->fpu.rc = RINT;
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for (i = 0; i < ARRAYLEN(m->fpu.st); ++i) {
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memcpy(&m->fpu.st[i], &fval, sizeof(fval));
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}
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}
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static void ResetSse(struct Machine *m) {
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m->sse.mxcsr = 0;
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m->sse.daz = false;
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m->sse.im = true;
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m->sse.dm = true;
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m->sse.zm = true;
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m->sse.om = true;
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m->sse.um = true;
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m->sse.pm = true;
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m->sse.rc = RINT;
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m->sse.ftz = false;
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bzero(m->xmm, sizeof(m->xmm));
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}
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void ResetInstructionCache(struct Machine *m) {
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memset(m->icache, -1, sizeof(m->icache));
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}
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void ResetCpu(struct Machine *m) {
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m->faultaddr = 0;
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m->stashsize = 0;
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m->stashaddr = 0;
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m->writeaddr = 0;
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m->readaddr = 0;
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m->writesize = 0;
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m->readsize = 0;
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m->flags = SetFlag(m->flags, FLAGS_DF, false);
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m->flags = SetFlag(m->flags, FLAGS_CF, false);
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m->flags = SetFlag(m->flags, FLAGS_ZF, false);
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m->flags = SetFlag(m->flags, FLAGS_SF, false);
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m->flags = SetFlag(m->flags, FLAGS_IF, true);
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m->flags = SetFlag(m->flags, FLAGS_F1, true);
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m->flags = SetFlag(m->flags, FLAGS_F0, false);
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m->flags = SetFlag(m->flags, FLAGS_IOPL, 3);
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bzero(m->reg, sizeof(m->reg));
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bzero(m->bofram, sizeof(m->bofram));
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bzero(&m->freelist, sizeof(m->freelist));
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ResetSse(m);
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ResetFpu(m);
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}
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void ResetTlb(struct Machine *m) {
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m->tlbindex = 0;
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bzero(m->tlb, sizeof(m->tlb));
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m->codevirt = 0;
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m->codehost = 0;
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}
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