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Added support for retrieving page fault address on Solaris (based on a 

patch by Robert Lunnon).
This commit is contained in:
Alexandre Julliard 2003-05-06 18:50:08 +00:00
parent c80c290e51
commit ebe67a2864
1 changed files with 15 additions and 22 deletions
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37
dlls/ntdll/signal_i386.c
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@ -316,15 +316,15 @@ typedef struct
#endif
#ifdef linux
#define CR2_sig(context) ((context)->cr2)
#define ERROR_sig(context) ((context)->sc_err)
#define FPU_sig(context) ((FLOATING_SAVE_AREA*)((context)->i387))
#define FAULT_ADDRESS ((void *)HANDLER_CONTEXT->cr2)
#endif
#ifdef __FreeBSD__
#define EFL_sig(context) ((context)->sc_efl)
/* FreeBSD, see i386/i386/traps.c::trap_pfault va->err kludge */
#define CR2_sig(context) ((context)->sc_err)
#define FAULT_ADDRESS ((void *)HANDLER_CONTEXT->sc_err)
#else
#define EFL_sig(context) ((context)->sc_eflags)
#endif
@ -368,6 +368,8 @@ typedef struct
#define TRAP_sig(context) ((context)->uc_mcontext.gregs[TRAPNO])
#endif
#define FAULT_ADDRESS (__siginfo->si_addr)
#endif /* svr4 || SCO_DS */
@ -453,21 +455,6 @@ static inline int get_error_code( const SIGCONTEXT *sigcontext )
#endif
}
/***********************************************************************
* get_cr2_value
*
* Get the CR2 value for a signal.
*/
static inline void *get_cr2_value( const SIGCONTEXT *sigcontext )
{
#ifdef CR2_sig
return (void *)CR2_sig(sigcontext);
#else
return NULL;
#endif
}
#ifdef __HAVE_VM86
/***********************************************************************
* save_vm86_context
@ -761,7 +748,7 @@ static void do_segv( CONTEXT *context, int trap_code, void *cr2, int err_code )
EXCEPTION_RECORD rec;
DWORD page_fault_code = EXCEPTION_ACCESS_VIOLATION;
#ifdef CR2_sig
#ifdef FAULT_ADDRESS
/* we want the page-fault case to be fast */
if (trap_code == T_PAGEFLT)
if (!(page_fault_code = VIRTUAL_HandleFault( cr2 ))) return;
@ -793,11 +780,11 @@ static void do_segv( CONTEXT *context, int trap_code, void *cr2, int err_code )
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
break;
case T_PAGEFLT: /* Page fault */
#ifdef CR2_sig
#ifdef FAULT_ADDRESS
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = (err_code & 2) != 0;
rec.ExceptionInformation[1] = (DWORD)cr2;
#endif /* CR2_sig */
#endif
rec.ExceptionCode = page_fault_code;
break;
case T_ALIGNFLT: /* Alignment check exception */
@ -1024,9 +1011,15 @@ static HANDLER_DEF(alrm_handler)
static HANDLER_DEF(segv_handler)
{
CONTEXT context;
void *cr2;
save_context( &context, HANDLER_CONTEXT );
do_segv( &context, get_trap_code(HANDLER_CONTEXT),
get_cr2_value(HANDLER_CONTEXT), get_error_code(HANDLER_CONTEXT) );
#ifdef FAULT_ADDRESS
cr2 = FAULT_ADDRESS;
#else
cr2 = NULL;
#endif
do_segv( &context, get_trap_code(HANDLER_CONTEXT), cr2, get_error_code(HANDLER_CONTEXT) );
restore_context( &context, HANDLER_CONTEXT );
}