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add comments + small fix/change

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svn path=/trunk/; revision=12924
This commit is contained in:
Gunnar Dalsnes 2005-01-11 01:47:35 +00:00
parent 5c84018967
commit b885ecfa57
1 changed files with 9 additions and 8 deletions
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17
reactos/include/pseh/prettybased.h
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@ -39,6 +39,10 @@ on this to access external variables
to prevent variables from being optimized into registers. to prevent variables from being optimized into registers.
See: http://alphalinux.org/archives/axp-list/1998/February1998/0330.html See: http://alphalinux.org/archives/axp-list/1998/February1998/0330.html
-you can't use return within a try/except/finally block
-you can't use __LEAVE within a (for/do/while) loop. it will only leave the loop
and not the try-block itself
USAGE: USAGE:
@ -98,7 +102,7 @@ typedef struct __SEHFrame
{ {
_SEHPortableFrame_t SEH_Header; _SEHPortableFrame_t SEH_Header;
_SEHJmpBuf_t SEH_JmpBuf; _SEHJmpBuf_t SEH_JmpBuf;
/* alternative: _SEHJmpBuf_t* SEH_JmpRetPtr; */ _SEHJmpBuf_t* SEH_JmpRetPtr;
} }
_SEHFrame_t; _SEHFrame_t;
@ -151,12 +155,8 @@ void __stdcall _FinallyPretty
if(_SEHSetJmp(jmpRetBuf) == 0) if(_SEHSetJmp(jmpRetBuf) == 0)
{ {
_SEHLongJmp_KeepEsp(myframe->SEH_JmpBuf, (int)&jmpRetBuf);
/* alternative:
myframe->SEH_JmpRetPtr = &jmpRetBuf; myframe->SEH_JmpRetPtr = &jmpRetBuf;
_SEHLongJmp_KeepEsp(myframe->SEH_JmpBuf, 2); _SEHLongJmp_KeepEsp(myframe->SEH_JmpBuf, 2);
*/
} }
} }
@ -259,10 +259,9 @@ void __stdcall _FinallyPretty
#define ___ENDTRY \ #define ___ENDTRY \
} while (0); \ } while (0); \
\ \
if (_ret > 1) \ if (_ret == 2) \
{ \ { \
_SEHLongJmp(*((_SEHJmpBuf_t*)_ret), 1); \ _SEHLongJmp(*_SEHFrame->SEH_JmpRetPtr, 1); \
/* alternative: _SEHLongJmp(*_SEHFrame->SEH_JmpRetPtr, 1); */ \
} \ } \
break; \ break; \
} \ } \
@ -282,6 +281,7 @@ void __stdcall _FinallyPretty
#define __ENDTRY #define __ENDTRY
#define _SEH_STATIC_FILTER(ACTION_) (ACTION_) #define _SEH_STATIC_FILTER(ACTION_) (ACTION_)
#define __LEAVE __leave #define __LEAVE __leave
#define __LEAVE2 __leave
#else #else
#define __TRY2 ___TRY #define __TRY2 ___TRY
#define __EXCEPT2 ___EXCEPT_DUAL #define __EXCEPT2 ___EXCEPT_DUAL
@ -292,6 +292,7 @@ void __stdcall _FinallyPretty
#define __FINALLY ___FINALLY_SINGLE #define __FINALLY ___FINALLY_SINGLE
#define __ENDTRY ___ENDTRY #define __ENDTRY ___ENDTRY
#define __LEAVE break #define __LEAVE break
#define __LEAVE2 break
#endif #endif