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ntdll: Add support for FreeBSD on ARM.

This commit is contained in:
André Hentschel 2015-03-26 23:16:49 +01:00 committed by Alexandre Julliard
parent f974d72672
commit a29ca210e6
1 changed files with 53 additions and 6 deletions
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59
dlls/ntdll/signal_arm.c
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@ -2,7 +2,7 @@
* ARM signal handling routines
*
* Copyright 2002 Marcus Meissner, SuSE Linux AG
* Copyright 2010, 2011 André Hentschel
* Copyright 2010-2013, 2015 André Hentschel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -96,9 +96,21 @@ typedef struct ucontext
/* Exceptions */
# define ERROR_sig(context) REG_sig(error_code, context)
# define FAULT_sig(context) REG_sig(fault_address, context)
# define TRAP_sig(context) REG_sig(trap_no, context)
#elif defined(__FreeBSD__)
/* All Registers access - only for local access */
# define REGn_sig(reg_num, context) ((context)->uc_mcontext.__gregs[reg_num])
/* Special Registers access */
# define SP_sig(context) REGn_sig(_REG_SP, context) /* Stack pointer */
# define LR_sig(context) REGn_sig(_REG_LR, context) /* Link register */
# define PC_sig(context) REGn_sig(_REG_PC, context) /* Program counter */
# define CPSR_sig(context) REGn_sig(_REG_CPSR, context) /* Current State Register */
# define IP_sig(context) REGn_sig(_REG_R12, context) /* Intra-Procedure-call scratch register */
# define FP_sig(context) REGn_sig(_REG_FP, context) /* Frame pointer */
#endif /* linux */
enum arm_trap_code
@ -123,6 +135,35 @@ struct UNWIND_INFO
WORD unknown2 : 4;
};
/***********************************************************************
* get_trap_code
*
* Get the trap code for a signal.
*/
static inline enum arm_trap_code get_trap_code( const ucontext_t *sigcontext )
{
#ifdef TRAP_sig
return TRAP_sig(sigcontext);
#else
return TRAP_ARM_UNKNOWN; /* unknown trap code */
#endif
}
/***********************************************************************
* get_error_code
*
* Get the error code for a signal.
*/
static inline WORD get_error_code( const ucontext_t *sigcontext )
{
#ifdef ERROR_sig
return ERROR_sig(sigcontext);
#else
return 0;
#endif
}
/***********************************************************************
* dispatch_signal
*/
@ -587,7 +628,7 @@ static void segv_handler( int signal, siginfo_t *info, void *ucontext )
ucontext_t *context = ucontext;
/* check for page fault inside the thread stack */
if (TRAP_sig(context) == TRAP_ARM_PAGEFLT &&
if (get_trap_code(context) == TRAP_ARM_PAGEFLT &&
(char *)info->si_addr >= (char *)NtCurrentTeb()->DeallocationStack &&
(char *)info->si_addr < (char *)NtCurrentTeb()->Tib.StackBase &&
virtual_handle_stack_fault( info->si_addr ))
@ -604,7 +645,7 @@ static void segv_handler( int signal, siginfo_t *info, void *ucontext )
rec = setup_exception( context, raise_segv_exception );
if (rec->ExceptionCode == EXCEPTION_STACK_OVERFLOW) return;
switch(TRAP_sig(context))
switch(get_trap_code(context))
{
case TRAP_ARM_PRIVINFLT: /* Invalid opcode exception */
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
@ -612,14 +653,20 @@ static void segv_handler( int signal, siginfo_t *info, void *ucontext )
case TRAP_ARM_PAGEFLT: /* Page fault */
rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
rec->NumberParameters = 2;
rec->ExceptionInformation[0] = (ERROR_sig(context) & 0x800) != 0;
rec->ExceptionInformation[0] = (get_error_code(context) & 0x800) != 0;
rec->ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
break;
case TRAP_ARM_ALIGNFLT: /* Alignment check exception */
rec->ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
case TRAP_ARM_UNKNOWN: /* Unknown fault code */
rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
rec->NumberParameters = 2;
rec->ExceptionInformation[0] = 0;
rec->ExceptionInformation[1] = 0xffffffff;
break;
default:
ERR("Got unexpected trap %ld\n", TRAP_sig(context));
ERR("Got unexpected trap %d\n", get_trap_code(context));
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}