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* win32/win32.c (set_pioinfo_extra): use more reliable way to search

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the position of pioinfo of VC14, and also support debug library of it.
  patched by davispuh AT gmail.com
  [ruby-core:76644] [Bug #12644]
  this fixes also [Bug #12631]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55792 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
usa 2016-08-01 19:12:28 +00:00
parent c7924b1305
commit 441cbf59f5
2 changed files with 56 additions and 16 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
Tue Aug 2 04:07:29 2016 NAKAMURA Usaku <usa@ruby-lang.org>
* win32/win32.c (set_pioinfo_extra): use more reliable way to search
the position of pioinfo of VC14, and also support debug library of it.
patched by davispuh AT gmail.com
[ruby-core:76644] [Bug #12644]
this fixes also [Bug #12631]
Mon Aug 1 21:39:52 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* ext/extmk.rb: [EXPERIMENTAL] build extension libraries in

64
win32/win32.c
View file

@ -2312,13 +2312,16 @@ typedef struct {
/* License: Ruby's */
#if RUBY_MSVCRT_VERSION >= 140
typedef char lowio_text_mode;
typedef char lowio_pipe_lookahead[3];
typedef struct {
CRITICAL_SECTION lock;
intptr_t osfhnd; // underlying OS file HANDLE
__int64 startpos; // File position that matches buffer start
unsigned char osfile; // Attributes of file (e.g., open in text mode?)
char textmode;
char _pipe_lookahead;
lowio_text_mode textmode;
lowio_pipe_lookahead _pipe_lookahead;
uint8_t unicode : 1; // Was the file opened as unicode?
uint8_t utf8translations : 1; // Buffer contains translations other than CRLF
@ -2356,7 +2359,6 @@ static inline ioinfo* _pioinfo(int);
#define IOINFO_ARRAY_ELTS (1 << IOINFO_L2E)
#define _osfhnd(i) (_pioinfo(i)->osfhnd)
#define _osfile(i) (_pioinfo(i)->osfile)
#define _pipech(i) (_pioinfo(i)->pipech)
#define rb_acrt_lowio_lock_fh(i) EnterCriticalSection(&_pioinfo(i)->lock)
#define rb_acrt_lowio_unlock_fh(i) LeaveCriticalSection(&_pioinfo(i)->lock)
@ -2368,35 +2370,65 @@ static void
set_pioinfo_extra(void)
{
#if RUBY_MSVCRT_VERSION >= 140
# define FUNCTION_RET 0xc3 /* ret */
# ifdef _DEBUG
# define UCRTBASE "ucrtbased.dll"
# else
# define UCRTBASE "ucrtbase.dll"
# endif
/* get __pioinfo addr with _isatty */
char *p = (char*)get_proc_address("ucrtbase.dll", "_isatty", NULL);
char *pend = p + 100;
char *p = (char*)get_proc_address(UCRTBASE, "_isatty", NULL);
char *pend = p;
/* _osfile(fh) & FDEV */
#if _WIN64
# if _WIN64
int32_t rel;
char *rip;
/* add rsp, _ */
# define FUNCTION_BEFORE_RET_MARK "\x48\x83\xc4"
# define FUNCTION_SKIP_BYTES 1
# ifdef _DEBUG
/* lea rcx,[__pioinfo's addr in RIP-relative 32bit addr] */
# define PIOINFO_MARK "\x48\x8d\x0d"
# else
/* lea rdx,[__pioinfo's addr in RIP-relative 32bit addr] */
# define PIOINFO_MARK "\x48\x8d\x15"
#else
# define PIOINFO_MARK "\x48\x8d\x15"
# endif
# else /* x86 */
/* pop ebp */
# define FUNCTION_BEFORE_RET_MARK "\x5d"
# define FUNCTION_SKIP_BYTES 0
/* mov eax,dword ptr [eax*4+100EB430h] */
# define PIOINFO_MARK "\x8B\x04\x85"
#endif
for (p; p < pend; p++) {
if (memcmp(p, PIOINFO_MARK, strlen(PIOINFO_MARK)) == 0) {
goto found;
# define PIOINFO_MARK "\x8B\x04\x85"
# endif
if (p) {
for (pend += 10; pend < p + 300; pend++) {
// find end of function
if (memcmp(pend, FUNCTION_BEFORE_RET_MARK, sizeof(FUNCTION_BEFORE_RET_MARK) - 1) == 0 &&
*(pend + (sizeof(FUNCTION_BEFORE_RET_MARK) - 1) + FUNCTION_SKIP_BYTES) & FUNCTION_RET == FUNCTION_RET) {
// search backwards from end of function
for (pend -= (sizeof(PIOINFO_MARK) - 1); pend > p; pend--) {
if (memcmp(pend, PIOINFO_MARK, sizeof(PIOINFO_MARK) - 1) == 0) {
p = pend;
goto found;
}
}
break;
}
}
}
fprintf(stderr, "unexpected ucrtbase.dll\n");
fprintf(stderr, "unexpected " UCRTBASE "\n");
_exit(1);
found:
p += strlen(PIOINFO_MARK);
p += sizeof(PIOINFO_MARK) - 1;
#if _WIN64
rel = *(int32_t*)(p);
rip = p + sizeof(int32_t);
__pioinfo = (ioinfo**)(rip + rel);
#else
__pioinfo = (ioinfo**)(p);
__pioinfo = *(ioinfo***)(p);
#endif
#else
int fd;