* *
* C Implementation File *
* *
- * Copyright (C) 1992-2014, Free Software Foundation, Inc. *
+ * Copyright (C) 1992-2015, Free Software Foundation, Inc. *
* *
* GNAT is free software; you can redistribute it and/or modify it under *
* terms of the GNU General Public License as published by the Free Soft- *
installed by this file are used to catch the resulting signals that come
from these probes failing (i.e. touching protected pages). */
-/* This file should be kept synchronized with 2sinit.ads, 2sinit.adb,
- s-init-ae653-cert.adb and s-init-xi-sparc.adb. All these files implement
- the required functionality for different targets. */
+/* This file should be kept synchronized with s-init.ads, s-init.adb and the
+ s-init-*.adb variants. All these files implement the required functionality
+ for different targets. */
/* The following include is here to meet the published VxWorks requirement
that the __vxworks header appear before any other include. */
#endif
#ifdef __ANDROID__
-#undef linux
+#undef __linux__
#endif
#ifdef IN_RTS
/* GNU/Linux Section */
/*********************/
-#elif defined (linux)
+#elif defined (__linux__)
#include <signal.h>
#endif
-#if defined (i386) || defined (__x86_64__) || defined (__ia64__) \
+#if defined (__i386__) || defined (__x86_64__) || defined (__ia64__) \
|| defined (__ARMEL__)
#define HAVE_GNAT_ADJUST_CONTEXT_FOR_RAISE
The stack checking code guarantees that this address is unused by the
time this happens. */
-#if defined (i386)
+#if defined (__i386__)
unsigned long *pc = (unsigned long *)mcontext->gregs[REG_EIP];
/* The pattern is "orl $0x0,(%esp)" for a probe in 32-bit mode. */
if (signo == SIGSEGV && pc && *pc == 0x00240c83)
msg = "unhandled signal";
}
- Raise_From_Signal_Handler(exception, msg);
+ Raise_From_Signal_Handler (exception, msg);
}
void
/* Solaris Section */
/*******************/
-#elif defined (sun) && defined (__SVR4) && !defined (__vxworks)
+#elif defined (__sun__) && !defined (__vxworks)
#include <signal.h>
#include <siginfo.h>
/* FreeBSD Section */
/*******************/
-#elif defined (__FreeBSD__)
+#elif defined (__FreeBSD__) || defined (__DragonFly__)
#include <signal.h>
#include <sys/ucontext.h>
}
void
-__gnat_install_handler ()
+__gnat_install_handler (void)
{
struct sigaction act;
__gnat_handler_installed = 1;
}
-/*******************/
-/* VxWorks Section */
-/*******************/
+/*************************************/
+/* VxWorks Section (including Vx653) */
+/*************************************/
#elif defined(__vxworks)
#include <signal.h>
#include <taskLib.h>
+#if defined (__i386__) && !defined (VTHREADS)
+#include <sysLib.h>
+#endif
#ifndef __RTP__
#include <intLib.h>
}
/* Handle different SIGnal to exception mappings in different VxWorks
- versions. */
-static void
+ versions. */
+void
__gnat_map_signal (int sig, siginfo_t *si ATTRIBUTE_UNUSED,
void *sc ATTRIBUTE_UNUSED)
{
msg = "SIGBUS: possible stack overflow";
break;
#endif
-#elif (_WRS_VXWORKS_MAJOR == 6)
+#elif (_WRS_VXWORKS_MAJOR >= 6)
case SIGILL:
exception = &constraint_error;
msg = "SIGILL";
Raise_From_Signal_Handler (exception, msg);
}
+#if defined (__i386__) && !defined (VTHREADS)
+extern void
+__gnat_vxsim_error_handler (int sig, siginfo_t *si, void *sc);
+
+static int is_vxsim = 0;
+#endif
+
/* Tasking and Non-tasking signal handler. Map SIGnal to Ada exception
propagation after the required low level adjustments. */
sigdelset (&mask, sig);
sigprocmask (SIG_SETMASK, &mask, NULL);
-#if defined (__ARMEL__) || defined (__PPC__)
- /* On PowerPC, kernel mode, we process signals through a Call Frame Info
- trampoline, voiding the need for myriads of fallback_frame_state
+#if defined (__ARMEL__) || defined (__PPC__) || defined (__i386__)
+ /* On certain targets, kernel mode, we process signals through a Call Frame
+ Info trampoline, voiding the need for myriads of fallback_frame_state
variants in the ZCX runtime. We have no simple way to distinguish ZCX
from SJLJ here, so we do this for SJLJ as well even though this is not
necessary. This only incurs a few extra instructions and a tiny
amount of extra stack usage. */
+#if defined (__i386__) && !defined (VTHREADS)
+ /* On x86, the vxsim signal context is subtly different and is processeed
+ by a handler compiled especially for vxsim. */
+
+ if (is_vxsim)
+ __gnat_vxsim_error_handler (sig, si, sc);
+#endif
+
#include "sigtramp.h"
__gnat_sigtramp (sig, (void *)si, (void *)sc,
__gnat_install_handler (void)
{
struct sigaction act;
+ char *model ATTRIBUTE_UNUSED;
/* Setup signal handler to map synchronous signals to appropriate
exceptions. Make sure that the handler isn't interrupted by another
trap_0_entry->inst_fourth = 0xa1480000;
#endif
+#if defined (__i386__) && !defined (VTHREADS)
+ /* By experiment, found that sysModel () returns the following string
+ prefix for vxsim when running on Linux and Windows. */
+ model = sysModel ();
+ if ((strncmp (model, "Linux", 5) == 0)
+ || (strncmp (model, "Windows", 7) == 0))
+ is_vxsim = 1;
+#endif
+
__gnat_handler_installed = 1;
}
#if defined (_ARCH_PPC) && !defined (_SOFT_FLOAT) && (!defined (VTHREADS) || defined (__VXWORKSMILS__))
#if defined (__SPE__)
{
- const unsigned long spefscr_mask = 0xfffffff3;
- unsigned long spefscr;
- asm ("mfspr %0, 512" : "=r" (spefscr));
- spefscr = spefscr & spefscr_mask;
- asm ("mtspr 512, %0\n\tisync" : : "r" (spefscr));
+ /* For e500v2, do nothing and leave the responsibility to install the
+ handler and enable the exceptions to the BSP. */
}
#else
asm ("mtfsb0 25");
#endif
#endif
-#if (defined (__i386__) || defined (i386)) && !defined (VTHREADS)
+#if defined (__i386__) && !defined (VTHREADS)
/* This is used to properly initialize the FPU on an x86 for each
process thread. */
asm ("finit");
msg = "unhandled signal";
}
- Raise_From_Signal_Handler(exception, msg);
+ Raise_From_Signal_Handler (exception, msg);
}
void
msg = "unhandled signal";
}
- Raise_From_Signal_Handler(exception, msg);
+ Raise_From_Signal_Handler (exception, msg);
}
void
#include <stdlib.h>
#include <sys/syscall.h>
#include <sys/sysctl.h>
-#include <mach/mach_vm.h>
-#include <mach/mach_init.h>
-#include <mach/vm_statistics.h>
/* This must be in keeping with System.OS_Interface.Alternate_Stack_Size. */
char __gnat_alternate_stack[32 * 1024]; /* 1 * MINSIGSTKSZ */
Tell the kernel to re-use alt stack when delivering a signal. */
#define UC_RESET_ALT_STACK 0x80000000
+#ifndef __arm__
+#include <mach/mach_vm.h>
+#include <mach/mach_init.h>
+#include <mach/vm_statistics.h>
+#endif
+
/* Return true if ADDR is within a stack guard area. */
static int
__gnat_is_stack_guard (mach_vm_address_t addr)
{
+#ifndef __arm__
kern_return_t kret;
vm_region_submap_info_data_64_t info;
mach_vm_address_t start;
&& info.user_tag == VM_MEMORY_STACK)
return 1;
return 0;
+#else
+ /* Pagezero for arm. */
+ return addr >= 4096;
+#endif
}
#define HAVE_GNAT_ADJUST_CONTEXT_FOR_RAISE
#if defined (_WIN32) || defined (__INTERIX) \
|| defined (__Lynx__) || defined(__NetBSD__) || defined(__FreeBSD__) \
- || defined (__OpenBSD__)
+ || defined (__OpenBSD__) || defined (__DragonFly__)
#define HAVE_GNAT_INIT_FLOAT
void
__gnat_init_float (void)
{
-#if defined (__i386__) || defined (i386) || defined (__x86_64)
+#if defined (__i386__) || defined (__x86_64__)
/* This is used to properly initialize the FPU on an x86 for each
process thread. */
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