Bug #12644 » 0001-Support-debug-build-on-Windows-with-MSVC.patch
win32/win32.c | ||
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/* License: Ruby's */
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#if RUBY_MSVCRT_VERSION >= 140
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typedef char lowio_text_mode;
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typedef char lowio_pipe_lookahead[3];
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typedef struct {
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CRITICAL_SECTION lock;
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intptr_t osfhnd; // underlying OS file HANDLE
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__int64 startpos; // File position that matches buffer start
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unsigned char osfile; // Attributes of file (e.g., open in text mode?)
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char textmode;
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char _pipe_lookahead;
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lowio_text_mode textmode;
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lowio_pipe_lookahead _pipe_lookahead;
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uint8_t unicode : 1; // Was the file opened as unicode?
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uint8_t utf8translations : 1; // Buffer contains translations other than CRLF
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... | ... | |
#define IOINFO_ARRAY_ELTS (1 << IOINFO_L2E)
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#define _osfhnd(i) (_pioinfo(i)->osfhnd)
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#define _osfile(i) (_pioinfo(i)->osfile)
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#define _pipech(i) (_pioinfo(i)->pipech)
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#define rb_acrt_lowio_lock_fh(i) EnterCriticalSection(&_pioinfo(i)->lock)
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#define rb_acrt_lowio_unlock_fh(i) LeaveCriticalSection(&_pioinfo(i)->lock)
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... | ... | |
set_pioinfo_extra(void)
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{
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#if RUBY_MSVCRT_VERSION >= 140
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# define FUNCTION_RET 0xc3 /* ret */
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# ifdef _DEBUG
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# define UCRTBASE "ucrtbased.dll"
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# else
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# define UCRTBASE "ucrtbase.dll"
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# endif
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/* get __pioinfo addr with _isatty */
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char *p = (char*)get_proc_address("ucrtbase.dll", "_isatty", NULL);
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char *pend = p + 100;
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char *p = (char*)get_proc_address(UCRTBASE, "_isatty", NULL);
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char *pend = p;
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/* _osfile(fh) & FDEV */
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#if _WIN64
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# if _WIN64
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int32_t rel;
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char *rip;
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/* add rsp, _ */
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# define FUNCTION_BEFORE_RET_MARK "\x48\x83\xc4"
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# define FUNCTION_SKIP_BYTES 1
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# ifdef _DEBUG
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/* lea rcx,[__pioinfo's addr in RIP-relative 32bit addr] */
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# define PIOINFO_MARK "\x48\x8d\x0d"
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# else
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/* lea rdx,[__pioinfo's addr in RIP-relative 32bit addr] */
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# define PIOINFO_MARK "\x48\x8d\x15"
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#else
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# define PIOINFO_MARK "\x48\x8d\x15"
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# endif
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# else /* x86 */
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/* pop ebp */
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# define FUNCTION_BEFORE_RET_MARK "\x5d"
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# define FUNCTION_SKIP_BYTES 0
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/* mov eax,dword ptr [eax*4+100EB430h] */
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# define PIOINFO_MARK "\x8B\x04\x85"
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#endif
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for (p; p < pend; p++) {
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if (memcmp(p, PIOINFO_MARK, strlen(PIOINFO_MARK)) == 0) {
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goto found;
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# define PIOINFO_MARK "\x8B\x04\x85"
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# endif
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if (p) {
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for (pend += 10; pend < p + 300; pend++) {
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// find end of function
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if (memcmp(pend, FUNCTION_BEFORE_RET_MARK, sizeof(FUNCTION_BEFORE_RET_MARK) - 1) == 0 &&
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*(pend + (sizeof(FUNCTION_BEFORE_RET_MARK) - 1) + FUNCTION_SKIP_BYTES) & FUNCTION_RET == FUNCTION_RET) {
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// search backwards from end of function
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for (pend -= (sizeof(PIOINFO_MARK) - 1); pend > p; pend--) {
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if (memcmp(pend, PIOINFO_MARK, sizeof(PIOINFO_MARK) - 1) == 0) {
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p = pend;
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goto found;
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}
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}
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break;
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}
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}
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}
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fprintf(stderr, "unexpected ucrtbase.dll\n");
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fprintf(stderr, "unexpected " UCRTBASE "\n");
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_exit(1);
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found:
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p += strlen(PIOINFO_MARK);
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p += sizeof(PIOINFO_MARK) - 1;
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#if _WIN64
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rel = *(int32_t*)(p);
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rip = p + sizeof(int32_t);
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__pioinfo = (ioinfo**)(rip + rel);
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#else
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__pioinfo = (ioinfo**)(p);
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__pioinfo = *(ioinfo***)(p);
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#endif
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#else
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int fd;
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