version 1.1.1.1, 1999/11/27 10:58:33 |
version 1.1.1.2, 2000/04/14 11:07:57 |
|
|
/* |
/* |
|
* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers |
* Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. |
* Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. |
* Copyright (c) 1996-1997 by Silicon Graphics. All rights reserved. |
* Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. |
|
* Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved. |
* |
* |
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED |
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED |
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK. |
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK. |
|
|
/* make sure the former gets defined to be the latter if appropriate. */ |
/* make sure the former gets defined to be the latter if appropriate. */ |
# include <features.h> |
# include <features.h> |
# if 2 <= __GLIBC__ |
# if 2 <= __GLIBC__ |
# if 0 == __GLIBC_MINOR__ |
# if 2 == __GLIBC__ && 0 == __GLIBC_MINOR__ |
/* glibc 2.1 no longer has sigcontext.h. But signal.h */ |
/* glibc 2.1 no longer has sigcontext.h. But signal.h */ |
/* has the right declaration for glibc 2.1. */ |
/* has the right declaration for glibc 2.1. */ |
# include <sigcontext.h> |
# include <sigcontext.h> |
|
|
# include <signal.h> |
# include <signal.h> |
|
|
/* Blatantly OS dependent routines, except for those that are related */ |
/* Blatantly OS dependent routines, except for those that are related */ |
/* dynamic loading. */ |
/* to dynamic loading. */ |
|
|
# if !defined(THREADS) && !defined(STACKBOTTOM) && defined(HEURISTIC2) |
# if !defined(THREADS) && !defined(STACKBOTTOM) && defined(HEURISTIC2) |
# define NEED_FIND_LIMIT |
# define NEED_FIND_LIMIT |
# endif |
# endif |
|
|
# if defined(IRIX_THREADS) |
# if defined(IRIX_THREADS) || defined(HPUX_THREADS) |
# define NEED_FIND_LIMIT |
# define NEED_FIND_LIMIT |
# endif |
# endif |
|
|
|
|
# define NEED_FIND_LIMIT |
# define NEED_FIND_LIMIT |
# endif |
# endif |
|
|
# if defined(LINUX) && (defined(POWERPC) || defined(SPARC)) |
# if defined(LINUX) && \ |
|
(defined(POWERPC) || defined(SPARC) || defined(ALPHA) || defined(IA64)) |
# define NEED_FIND_LIMIT |
# define NEED_FIND_LIMIT |
# endif |
# endif |
|
|
|
|
# define OPT_PROT_EXEC 0 |
# define OPT_PROT_EXEC 0 |
#endif |
#endif |
|
|
#if defined(LINUX) && defined(POWERPC) |
#if defined(LINUX) && (defined(POWERPC) || defined(SPARC) || defined(ALPHA) \ |
|
|| defined(IA64)) |
|
/* The I386 case can be handled without a search. The Alpha case */ |
|
/* used to be handled differently as well, but the rules changed */ |
|
/* for recent Linux versions. This seems to be the easiest way to */ |
|
/* cover all versions. */ |
ptr_t GC_data_start; |
ptr_t GC_data_start; |
|
|
void GC_init_linuxppc() |
extern char * GC_copyright[]; /* Any data symbol would do. */ |
{ |
|
extern ptr_t GC_find_limit(); |
|
extern char **_environ; |
|
/* This may need to be environ, without the underscore, for */ |
|
/* some versions. */ |
|
GC_data_start = GC_find_limit((ptr_t)&_environ, FALSE); |
|
} |
|
#endif |
|
|
|
#if defined(LINUX) && defined(SPARC) |
void GC_init_linux_data_start() |
ptr_t GC_data_start; |
|
|
|
void GC_init_linuxsparc() |
|
{ |
{ |
extern ptr_t GC_find_limit(); |
extern ptr_t GC_find_limit(); |
extern char **_environ; |
|
/* This may need to be environ, without the underscore, for */ |
GC_data_start = GC_find_limit((ptr_t)GC_copyright, FALSE); |
/* some versions. */ |
|
GC_data_start = GC_find_limit((ptr_t)&_environ, FALSE); |
|
} |
} |
#endif |
#endif |
|
|
Line 362 word GC_page_size; |
|
Line 357 word GC_page_size; |
|
} |
} |
|
|
# else |
# else |
# if defined(MPROTECT_VDB) || defined(PROC_VDB) || defined(USE_MMAP) |
# if defined(MPROTECT_VDB) || defined(PROC_VDB) || defined(USE_MMAP) \ |
|
|| defined(USE_MUNMAP) |
void GC_setpagesize() |
void GC_setpagesize() |
{ |
{ |
GC_page_size = GETPAGESIZE(); |
GC_page_size = GETPAGESIZE(); |
Line 441 ptr_t GC_get_stack_base() |
|
Line 437 ptr_t GC_get_stack_base() |
|
|
|
ptr_t GC_get_stack_base() |
ptr_t GC_get_stack_base() |
{ |
{ |
|
struct Process *proc = (struct Process*)SysBase->ThisTask; |
|
|
|
/* Reference: Amiga Guru Book Pages: 42,567,574 */ |
|
if (proc->pr_Task.tc_Node.ln_Type==NT_PROCESS |
|
&& proc->pr_CLI != NULL) { |
|
/* first ULONG is StackSize */ |
|
/*longPtr = proc->pr_ReturnAddr; |
|
size = longPtr[0];*/ |
|
|
|
return (char *)proc->pr_ReturnAddr + sizeof(ULONG); |
|
} else { |
|
return (char *)proc->pr_Task.tc_SPUpper; |
|
} |
|
} |
|
|
|
#if 0 /* old version */ |
|
ptr_t GC_get_stack_base() |
|
{ |
extern struct WBStartup *_WBenchMsg; |
extern struct WBStartup *_WBenchMsg; |
extern long __base; |
extern long __base; |
extern long __stack; |
extern long __stack; |
Line 463 ptr_t GC_get_stack_base() |
|
Line 477 ptr_t GC_get_stack_base() |
|
} |
} |
return (ptr_t)(__base + GC_max(size, __stack)); |
return (ptr_t)(__base + GC_max(size, __stack)); |
} |
} |
|
#endif /* 0 */ |
|
|
# else |
# else /* !AMIGA, !OS2, ... */ |
|
|
|
|
|
|
# ifdef NEED_FIND_LIMIT |
# ifdef NEED_FIND_LIMIT |
/* Some tools to implement HEURISTIC2 */ |
/* Some tools to implement HEURISTIC2 */ |
# define MIN_PAGE_SIZE 256 /* Smallest conceivable page size, bytes */ |
# define MIN_PAGE_SIZE 256 /* Smallest conceivable page size, bytes */ |
Line 486 ptr_t GC_get_stack_base() |
|
Line 499 ptr_t GC_get_stack_base() |
|
typedef void (*handler)(); |
typedef void (*handler)(); |
# endif |
# endif |
|
|
# if defined(SUNOS5SIGS) || defined(IRIX5) |
# if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) |
static struct sigaction old_segv_act; |
static struct sigaction old_segv_act; |
# if defined(_sigargs) /* !Irix6.x */ |
# if defined(_sigargs) || defined(HPUX) /* !Irix6.x */ |
static struct sigaction old_bus_act; |
static struct sigaction old_bus_act; |
# endif |
# endif |
# else |
# else |
Line 497 ptr_t GC_get_stack_base() |
|
Line 510 ptr_t GC_get_stack_base() |
|
|
|
void GC_setup_temporary_fault_handler() |
void GC_setup_temporary_fault_handler() |
{ |
{ |
# if defined(SUNOS5SIGS) || defined(IRIX5) |
# if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) |
struct sigaction act; |
struct sigaction act; |
|
|
act.sa_handler = GC_fault_handler; |
act.sa_handler = GC_fault_handler; |
Line 516 ptr_t GC_get_stack_base() |
|
Line 529 ptr_t GC_get_stack_base() |
|
(void) sigaction(SIGSEGV, &act, 0); |
(void) sigaction(SIGSEGV, &act, 0); |
# else |
# else |
(void) sigaction(SIGSEGV, &act, &old_segv_act); |
(void) sigaction(SIGSEGV, &act, &old_segv_act); |
# ifdef _sigargs /* Irix 5.x, not 6.x */ |
# if defined(IRIX5) && defined(_sigargs) /* Irix 5.x, not 6.x */ \ |
/* Under 5.x, we may get SIGBUS. */ |
|| defined(HPUX) |
/* Pthreads doesn't exist under 5.x, so we don't */ |
/* Under Irix 5.x or HP/UX, we may get SIGBUS. */ |
/* have to worry in the threads case. */ |
/* Pthreads doesn't exist under Irix 5.x, so we */ |
|
/* don't have to worry in the threads case. */ |
(void) sigaction(SIGBUS, &act, &old_bus_act); |
(void) sigaction(SIGBUS, &act, &old_bus_act); |
# endif |
# endif |
# endif /* IRIX_THREADS */ |
# endif /* IRIX_THREADS */ |
Line 533 ptr_t GC_get_stack_base() |
|
Line 547 ptr_t GC_get_stack_base() |
|
|
|
void GC_reset_fault_handler() |
void GC_reset_fault_handler() |
{ |
{ |
# if defined(SUNOS5SIGS) || defined(IRIX5) |
# if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) |
(void) sigaction(SIGSEGV, &old_segv_act, 0); |
(void) sigaction(SIGSEGV, &old_segv_act, 0); |
# ifdef _sigargs /* Irix 5.x, not 6.x */ |
# if defined(IRIX5) && defined(_sigargs) /* Irix 5.x, not 6.x */ \ |
|
|| defined(HPUX) |
(void) sigaction(SIGBUS, &old_bus_act, 0); |
(void) sigaction(SIGBUS, &old_bus_act, 0); |
# endif |
# endif |
# else |
# else |
Line 580 ptr_t GC_get_stack_base() |
|
Line 595 ptr_t GC_get_stack_base() |
|
} |
} |
# endif |
# endif |
|
|
|
#ifdef LINUX_STACKBOTTOM |
|
|
|
# define STAT_SKIP 27 /* Number of fields preceding startstack */ |
|
/* field in /proc/<pid>/stat */ |
|
|
|
ptr_t GC_linux_stack_base(void) |
|
{ |
|
char buf[50]; |
|
FILE *f; |
|
char c; |
|
word result = 0; |
|
int i; |
|
|
|
sprintf(buf, "/proc/%d/stat", getpid()); |
|
f = fopen(buf, "r"); |
|
if (NULL == f) ABORT("Couldn't open /proc/<pid>/stat"); |
|
c = getc(f); |
|
/* Skip the required number of fields. This number is hopefully */ |
|
/* constant across all Linux implementations. */ |
|
for (i = 0; i < STAT_SKIP; ++i) { |
|
while (isspace(c)) c = getc(f); |
|
while (!isspace(c)) c = getc(f); |
|
} |
|
while (isspace(c)) c = getc(f); |
|
while (isdigit(c)) { |
|
result *= 10; |
|
result += c - '0'; |
|
c = getc(f); |
|
} |
|
if (result < 0x10000000) ABORT("Absurd stack bottom value"); |
|
return (ptr_t)result; |
|
} |
|
|
|
#endif /* LINUX_STACKBOTTOM */ |
|
|
ptr_t GC_get_stack_base() |
ptr_t GC_get_stack_base() |
{ |
{ |
word dummy; |
word dummy; |
Line 601 ptr_t GC_get_stack_base() |
|
Line 650 ptr_t GC_get_stack_base() |
|
& ~STACKBOTTOM_ALIGNMENT_M1); |
& ~STACKBOTTOM_ALIGNMENT_M1); |
# endif |
# endif |
# endif /* HEURISTIC1 */ |
# endif /* HEURISTIC1 */ |
|
# ifdef LINUX_STACKBOTTOM |
|
result = GC_linux_stack_base(); |
|
# endif |
# ifdef HEURISTIC2 |
# ifdef HEURISTIC2 |
# ifdef STACK_GROWS_DOWN |
# ifdef STACK_GROWS_DOWN |
result = GC_find_limit((ptr_t)(&dummy), TRUE); |
result = GC_find_limit((ptr_t)(&dummy), TRUE); |
Line 851 void GC_register_data_segments() |
|
Line 903 void GC_register_data_segments() |
|
# else |
# else |
# ifdef AMIGA |
# ifdef AMIGA |
|
|
|
void GC_register_data_segments() |
|
{ |
|
struct Process *proc; |
|
struct CommandLineInterface *cli; |
|
BPTR myseglist; |
|
ULONG *data; |
|
|
|
int num; |
|
|
|
|
|
# ifdef __GNUC__ |
|
ULONG dataSegSize; |
|
GC_bool found_segment = FALSE; |
|
extern char __data_size[]; |
|
|
|
dataSegSize=__data_size+8; |
|
/* Can`t find the Location of __data_size, because |
|
it`s possible that is it, inside the segment. */ |
|
|
|
# endif |
|
|
|
proc= (struct Process*)SysBase->ThisTask; |
|
|
|
/* Reference: Amiga Guru Book Pages: 538ff,565,573 |
|
and XOper.asm */ |
|
if (proc->pr_Task.tc_Node.ln_Type==NT_PROCESS) { |
|
if (proc->pr_CLI == NULL) { |
|
myseglist = proc->pr_SegList; |
|
} else { |
|
/* ProcLoaded 'Loaded as a command: '*/ |
|
cli = BADDR(proc->pr_CLI); |
|
myseglist = cli->cli_Module; |
|
} |
|
} else { |
|
ABORT("Not a Process."); |
|
} |
|
|
|
if (myseglist == NULL) { |
|
ABORT("Arrrgh.. can't find segments, aborting"); |
|
} |
|
|
|
/* xoper hunks Shell Process */ |
|
|
|
num=0; |
|
for (data = (ULONG *)BADDR(myseglist); data != NULL; |
|
data = (ULONG *)BADDR(data[0])) { |
|
if (((ULONG) GC_register_data_segments < (ULONG) &data[1]) || |
|
((ULONG) GC_register_data_segments > (ULONG) &data[1] + data[-1])) { |
|
# ifdef __GNUC__ |
|
if (dataSegSize == data[-1]) { |
|
found_segment = TRUE; |
|
} |
|
# endif |
|
GC_add_roots_inner((char *)&data[1], |
|
((char *)&data[1]) + data[-1], FALSE); |
|
} |
|
++num; |
|
} /* for */ |
|
# ifdef __GNUC__ |
|
if (!found_segment) { |
|
ABORT("Can`t find correct Segments.\nSolution: Use an newer version of ixemul.library"); |
|
} |
|
# endif |
|
} |
|
|
|
#if 0 /* old version */ |
void GC_register_data_segments() |
void GC_register_data_segments() |
{ |
{ |
extern struct WBStartup *_WBenchMsg; |
extern struct WBStartup *_WBenchMsg; |
Line 892 void GC_register_data_segments() |
|
Line 1010 void GC_register_data_segments() |
|
} |
} |
} |
} |
} |
} |
|
#endif /* old version */ |
|
|
|
|
# else |
# else |
Line 932 int * etext_addr; |
|
Line 1051 int * etext_addr; |
|
|
|
void GC_register_data_segments() |
void GC_register_data_segments() |
{ |
{ |
# if !defined(PCR) && !defined(SRC_M3) && !defined(NEXT) && !defined(MACOS) |
# if !defined(PCR) && !defined(SRC_M3) && !defined(NEXT) && !defined(MACOS) \ |
|
&& !defined(MACOSX) |
# if defined(REDIRECT_MALLOC) && defined(SOLARIS_THREADS) |
# if defined(REDIRECT_MALLOC) && defined(SOLARIS_THREADS) |
/* As of Solaris 2.3, the Solaris threads implementation */ |
/* As of Solaris 2.3, the Solaris threads implementation */ |
/* allocates the data structure for the initial thread with */ |
/* allocates the data structure for the initial thread with */ |
Line 946 void GC_register_data_segments() |
|
Line 1066 void GC_register_data_segments() |
|
GC_add_roots_inner(DATASTART, (char *)(DATAEND), FALSE); |
GC_add_roots_inner(DATASTART, (char *)(DATAEND), FALSE); |
# endif |
# endif |
# endif |
# endif |
# if !defined(PCR) && defined(NEXT) |
# if !defined(PCR) && (defined(NEXT) || defined(MACOSX)) |
GC_add_roots_inner(DATASTART, (char *) get_end(), FALSE); |
GC_add_roots_inner(DATASTART, (char *) get_end(), FALSE); |
# endif |
# endif |
# if defined(MACOS) |
# if defined(MACOS) |
Line 1160 void GC_win32_free_heap () |
|
Line 1280 void GC_win32_free_heap () |
|
|
|
# endif |
# endif |
|
|
|
#ifdef USE_MUNMAP |
|
|
|
/* For now, this only works on some Unix-like systems. If you */ |
|
/* have something else, don't define USE_MUNMAP. */ |
|
/* We assume ANSI C to support this feature. */ |
|
#include <unistd.h> |
|
#include <sys/mman.h> |
|
#include <sys/stat.h> |
|
#include <sys/types.h> |
|
#include <fcntl.h> |
|
|
|
/* Compute a page aligned starting address for the unmap */ |
|
/* operation on a block of size bytes starting at start. */ |
|
/* Return 0 if the block is too small to make this feasible. */ |
|
ptr_t GC_unmap_start(ptr_t start, word bytes) |
|
{ |
|
ptr_t result = start; |
|
/* Round start to next page boundary. */ |
|
result += GC_page_size - 1; |
|
result = (ptr_t)((word)result & ~(GC_page_size - 1)); |
|
if (result + GC_page_size > start + bytes) return 0; |
|
return result; |
|
} |
|
|
|
/* Compute end address for an unmap operation on the indicated */ |
|
/* block. */ |
|
ptr_t GC_unmap_end(ptr_t start, word bytes) |
|
{ |
|
ptr_t end_addr = start + bytes; |
|
end_addr = (ptr_t)((word)end_addr & ~(GC_page_size - 1)); |
|
return end_addr; |
|
} |
|
|
|
/* We assume that GC_remap is called on exactly the same range */ |
|
/* as a previous call to GC_unmap. It is safe to consistently */ |
|
/* round the endpoints in both places. */ |
|
void GC_unmap(ptr_t start, word bytes) |
|
{ |
|
ptr_t start_addr = GC_unmap_start(start, bytes); |
|
ptr_t end_addr = GC_unmap_end(start, bytes); |
|
word len = end_addr - start_addr; |
|
if (0 == start_addr) return; |
|
if (munmap(start_addr, len) != 0) ABORT("munmap failed"); |
|
GC_unmapped_bytes += len; |
|
} |
|
|
|
|
|
void GC_remap(ptr_t start, word bytes) |
|
{ |
|
static int zero_descr = -1; |
|
ptr_t start_addr = GC_unmap_start(start, bytes); |
|
ptr_t end_addr = GC_unmap_end(start, bytes); |
|
word len = end_addr - start_addr; |
|
ptr_t result; |
|
|
|
if (-1 == zero_descr) zero_descr = open("/dev/zero", O_RDWR); |
|
if (0 == start_addr) return; |
|
result = mmap(start_addr, len, PROT_READ | PROT_WRITE | OPT_PROT_EXEC, |
|
MAP_FIXED | MAP_PRIVATE, zero_descr, 0); |
|
if (result != start_addr) { |
|
ABORT("mmap remapping failed"); |
|
} |
|
GC_unmapped_bytes -= len; |
|
} |
|
|
|
/* Two adjacent blocks have already been unmapped and are about to */ |
|
/* be merged. Unmap the whole block. This typically requires */ |
|
/* that we unmap a small section in the middle that was not previously */ |
|
/* unmapped due to alignment constraints. */ |
|
void GC_unmap_gap(ptr_t start1, word bytes1, ptr_t start2, word bytes2) |
|
{ |
|
ptr_t start1_addr = GC_unmap_start(start1, bytes1); |
|
ptr_t end1_addr = GC_unmap_end(start1, bytes1); |
|
ptr_t start2_addr = GC_unmap_start(start2, bytes2); |
|
ptr_t end2_addr = GC_unmap_end(start2, bytes2); |
|
ptr_t start_addr = end1_addr; |
|
ptr_t end_addr = start2_addr; |
|
word len; |
|
GC_ASSERT(start1 + bytes1 == start2); |
|
if (0 == start1_addr) start_addr = GC_unmap_start(start1, bytes1 + bytes2); |
|
if (0 == start2_addr) end_addr = GC_unmap_end(start1, bytes1 + bytes2); |
|
if (0 == start_addr) return; |
|
len = end_addr - start_addr; |
|
if (len != 0 && munmap(start_addr, len) != 0) ABORT("munmap failed"); |
|
GC_unmapped_bytes += len; |
|
} |
|
|
|
#endif /* USE_MUNMAP */ |
|
|
/* Routine for pushing any additional roots. In THREADS */ |
/* Routine for pushing any additional roots. In THREADS */ |
/* environment, this is also responsible for marking from */ |
/* environment, this is also responsible for marking from */ |
/* thread stacks. In the SRC_M3 case, it also handles */ |
/* thread stacks. In the SRC_M3 case, it also handles */ |
Line 1277 void GC_default_push_other_roots() |
|
Line 1486 void GC_default_push_other_roots() |
|
|
|
# if defined(SOLARIS_THREADS) || defined(WIN32_THREADS) \ |
# if defined(SOLARIS_THREADS) || defined(WIN32_THREADS) \ |
|| defined(IRIX_THREADS) || defined(LINUX_THREADS) \ |
|| defined(IRIX_THREADS) || defined(LINUX_THREADS) \ |
|| defined(IRIX_PCR_THREADS) |
|| defined(IRIX_JDK_THREADS) || defined(HPUX_THREADS) |
|
|
extern void GC_push_all_stacks(); |
extern void GC_push_all_stacks(); |
|
|
Line 1404 struct hblk *h; |
|
Line 1613 struct hblk *h; |
|
# include <sys/syscall.h> |
# include <sys/syscall.h> |
|
|
# define PROTECT(addr, len) \ |
# define PROTECT(addr, len) \ |
if (mprotect((caddr_t)(addr), (int)(len), \ |
if (mprotect((caddr_t)(addr), (size_t)(len), \ |
PROT_READ | OPT_PROT_EXEC) < 0) { \ |
PROT_READ | OPT_PROT_EXEC) < 0) { \ |
ABORT("mprotect failed"); \ |
ABORT("mprotect failed"); \ |
} |
} |
# define UNPROTECT(addr, len) \ |
# define UNPROTECT(addr, len) \ |
if (mprotect((caddr_t)(addr), (int)(len), \ |
if (mprotect((caddr_t)(addr), (size_t)(len), \ |
PROT_WRITE | PROT_READ | OPT_PROT_EXEC ) < 0) { \ |
PROT_WRITE | PROT_READ | OPT_PROT_EXEC ) < 0) { \ |
ABORT("un-mprotect failed"); \ |
ABORT("un-mprotect failed"); \ |
} |
} |
Line 1438 struct hblk *h; |
|
Line 1647 struct hblk *h; |
|
typedef void (* SIG_PF)(); |
typedef void (* SIG_PF)(); |
#endif |
#endif |
#if defined(SUNOS5SIGS) || defined(OSF1) || defined(LINUX) |
#if defined(SUNOS5SIGS) || defined(OSF1) || defined(LINUX) |
|
# ifdef __STDC__ |
typedef void (* SIG_PF)(int); |
typedef void (* SIG_PF)(int); |
|
# else |
|
typedef void (* SIG_PF)(); |
|
# endif |
#endif |
#endif |
#if defined(MSWIN32) |
#if defined(MSWIN32) |
typedef LPTOP_LEVEL_EXCEPTION_FILTER SIG_PF; |
typedef LPTOP_LEVEL_EXCEPTION_FILTER SIG_PF; |
Line 1450 struct hblk *h; |
|
Line 1663 struct hblk *h; |
|
typedef void (* REAL_SIG_PF)(int, int, struct sigcontext *); |
typedef void (* REAL_SIG_PF)(int, int, struct sigcontext *); |
#endif |
#endif |
#if defined(SUNOS5SIGS) |
#if defined(SUNOS5SIGS) |
typedef void (* REAL_SIG_PF)(int, struct siginfo *, void *); |
# ifdef HPUX |
|
# define SIGINFO __siginfo |
|
# else |
|
# define SIGINFO siginfo |
|
# endif |
|
# ifdef __STDC__ |
|
typedef void (* REAL_SIG_PF)(int, struct SIGINFO *, void *); |
|
# else |
|
typedef void (* REAL_SIG_PF)(); |
|
# endif |
#endif |
#endif |
#if defined(LINUX) |
#if defined(LINUX) |
# include <linux/version.h> |
# include <linux/version.h> |
# if (LINUX_VERSION_CODE >= 0x20100) && !defined(M68K) || defined(ALPHA) |
# if (LINUX_VERSION_CODE >= 0x20100) && !defined(M68K) || defined(ALPHA) || defined(IA64) |
typedef struct sigcontext s_c; |
typedef struct sigcontext s_c; |
# else |
# else |
typedef struct sigcontext_struct s_c; |
typedef struct sigcontext_struct s_c; |
# endif |
# endif |
|
# if defined(ALPHA) || defined(M68K) |
|
typedef void (* REAL_SIG_PF)(int, int, s_c *); |
|
# else |
|
# if defined(IA64) |
|
typedef void (* REAL_SIG_PF)(int, siginfo_t *, s_c *); |
|
# else |
|
typedef void (* REAL_SIG_PF)(int, s_c); |
|
# endif |
|
# endif |
# ifdef ALPHA |
# ifdef ALPHA |
typedef void (* REAL_SIG_PF)(int, int, s_c *); |
|
/* Retrieve fault address from sigcontext structure by decoding */ |
/* Retrieve fault address from sigcontext structure by decoding */ |
/* instruction. */ |
/* instruction. */ |
char * get_fault_addr(s_c *sc) { |
char * get_fault_addr(s_c *sc) { |
Line 1472 struct hblk *h; |
|
Line 1702 struct hblk *h; |
|
faultaddr += (word) (((int)instr << 16) >> 16); |
faultaddr += (word) (((int)instr << 16) >> 16); |
return (char *)faultaddr; |
return (char *)faultaddr; |
} |
} |
# else /* !ALPHA */ |
|
typedef void (* REAL_SIG_PF)(int, s_c); |
|
# endif /* !ALPHA */ |
# endif /* !ALPHA */ |
# endif |
# endif |
|
|
Line 1509 SIG_PF GC_old_segv_handler; /* Also old MSWIN32 ACCESS |
|
Line 1737 SIG_PF GC_old_segv_handler; /* Also old MSWIN32 ACCESS |
|
# endif |
# endif |
# endif |
# endif |
# if defined(LINUX) |
# if defined(LINUX) |
# ifdef ALPHA |
# if defined(ALPHA) || defined(M68K) |
void GC_write_fault_handler(int sig, int code, s_c * sc) |
void GC_write_fault_handler(int sig, int code, s_c * sc) |
# else |
# else |
void GC_write_fault_handler(int sig, s_c sc) |
# if defined(IA64) |
|
void GC_write_fault_handler(int sig, siginfo_t * si, s_c * scp) |
|
# else |
|
void GC_write_fault_handler(int sig, s_c sc) |
|
# endif |
# endif |
# endif |
# define SIG_OK (sig == SIGSEGV) |
# define SIG_OK (sig == SIGSEGV) |
# define CODE_OK TRUE |
# define CODE_OK TRUE |
/* Empirically c.trapno == 14, but is that useful? */ |
/* Empirically c.trapno == 14, on IA32, but is that useful? */ |
/* We assume Intel architecture, so alignment */ |
/* Should probably consider alignment issues on other */ |
/* faults are not possible. */ |
/* architectures. */ |
# endif |
# endif |
# if defined(SUNOS5SIGS) |
# if defined(SUNOS5SIGS) |
void GC_write_fault_handler(int sig, struct siginfo *scp, void * context) |
# ifdef __STDC__ |
# define SIG_OK (sig == SIGSEGV) |
void GC_write_fault_handler(int sig, struct SIGINFO *scp, void * context) |
# define CODE_OK (scp -> si_code == SEGV_ACCERR) |
# else |
|
void GC_write_fault_handler(sig, scp, context) |
|
int sig; |
|
struct SIGINFO *scp; |
|
void * context; |
|
# endif |
|
# ifdef HPUX |
|
# define SIG_OK (sig == SIGSEGV || sig == SIGBUS) |
|
# define CODE_OK (scp -> si_code == SEGV_ACCERR) \ |
|
|| (scp -> si_code == BUS_ADRERR) \ |
|
|| (scp -> si_code == BUS_UNKNOWN) \ |
|
|| (scp -> si_code == SEGV_UNKNOWN) \ |
|
|| (scp -> si_code == BUS_OBJERR) |
|
# else |
|
# define SIG_OK (sig == SIGSEGV) |
|
# define CODE_OK (scp -> si_code == SEGV_ACCERR) |
|
# endif |
# endif |
# endif |
# if defined(MSWIN32) |
# if defined(MSWIN32) |
LONG WINAPI GC_write_fault_handler(struct _EXCEPTION_POINTERS *exc_info) |
LONG WINAPI GC_write_fault_handler(struct _EXCEPTION_POINTERS *exc_info) |
Line 1575 SIG_PF GC_old_segv_handler; /* Also old MSWIN32 ACCESS |
|
Line 1823 SIG_PF GC_old_segv_handler; /* Also old MSWIN32 ACCESS |
|
# ifdef ALPHA |
# ifdef ALPHA |
char * addr = get_fault_addr(sc); |
char * addr = get_fault_addr(sc); |
# else |
# else |
|
# ifdef IA64 |
|
char * addr = si -> si_addr; |
|
# else |
|
# if defined(POWERPC) |
|
char * addr = (char *) (sc.regs->dar); |
|
# else |
--> architecture not supported |
--> architecture not supported |
|
# endif |
|
# endif |
# endif |
# endif |
# endif |
# endif |
# endif |
# endif |
Line 1628 SIG_PF GC_old_segv_handler; /* Also old MSWIN32 ACCESS |
|
Line 1884 SIG_PF GC_old_segv_handler; /* Also old MSWIN32 ACCESS |
|
return; |
return; |
# endif |
# endif |
# if defined (LINUX) |
# if defined (LINUX) |
# ifdef ALPHA |
# if defined(ALPHA) || defined(M68K) |
(*(REAL_SIG_PF)old_handler) (sig, code, sc); |
(*(REAL_SIG_PF)old_handler) (sig, code, sc); |
# else |
# else |
|
# if defined(IA64) |
|
(*(REAL_SIG_PF)old_handler) (sig, si, scp); |
|
# else |
(*(REAL_SIG_PF)old_handler) (sig, sc); |
(*(REAL_SIG_PF)old_handler) (sig, sc); |
|
# endif |
# endif |
# endif |
return; |
return; |
# endif |
# endif |
Line 1699 struct hblk *h; |
|
Line 1959 struct hblk *h; |
|
|
|
void GC_dirty_init() |
void GC_dirty_init() |
{ |
{ |
#if defined(SUNOS5SIGS) || defined(IRIX5) |
#if defined(SUNOS5SIGS) || defined(IRIX5) /* || defined(OSF1) */ |
struct sigaction act, oldact; |
struct sigaction act, oldact; |
# ifdef IRIX5 |
# ifdef IRIX5 |
act.sa_flags = SA_RESTART; |
act.sa_flags = SA_RESTART; |
Line 1743 void GC_dirty_init() |
|
Line 2003 void GC_dirty_init() |
|
} |
} |
# endif |
# endif |
# if defined(SUNOS5SIGS) || defined(IRIX5) |
# if defined(SUNOS5SIGS) || defined(IRIX5) |
# if defined(IRIX_THREADS) || defined(IRIX_PCR_THREADS) |
# if defined(IRIX_THREADS) || defined(IRIX_JDK_THREADS) |
sigaction(SIGSEGV, 0, &oldact); |
sigaction(SIGSEGV, 0, &oldact); |
sigaction(SIGSEGV, &act, 0); |
sigaction(SIGSEGV, &act, 0); |
# else |
# else |
Line 1769 void GC_dirty_init() |
|
Line 2029 void GC_dirty_init() |
|
GC_err_printf0("Replaced other SIGSEGV handler\n"); |
GC_err_printf0("Replaced other SIGSEGV handler\n"); |
# endif |
# endif |
} |
} |
|
# ifdef HPUX |
|
sigaction(SIGBUS, &act, &oldact); |
|
GC_old_bus_handler = oldact.sa_handler; |
|
if (GC_old_segv_handler != SIG_DFL) { |
|
# ifdef PRINTSTATS |
|
GC_err_printf0("Replaced other SIGBUS handler\n"); |
|
# endif |
|
} |
|
# endif |
# endif |
# endif |
# if defined(MSWIN32) |
# if defined(MSWIN32) |
GC_old_segv_handler = SetUnhandledExceptionFilter(GC_write_fault_handler); |
GC_old_segv_handler = SetUnhandledExceptionFilter(GC_write_fault_handler); |
Line 2241 struct hblk *h; |
|
Line 2510 struct hblk *h; |
|
# if defined (DRSNX) |
# if defined (DRSNX) |
# include <sys/sparc/frame.h> |
# include <sys/sparc/frame.h> |
# else |
# else |
# include <sys/frame.h> |
# if defined(OPENBSD) |
|
# include <frame.h> |
|
# else |
|
# include <sys/frame.h> |
|
# endif |
# endif |
# endif |
# endif |
# endif |
# if NARGS > 6 |
# if NARGS > 6 |
Line 2251 struct hblk *h; |
|
Line 2524 struct hblk *h; |
|
#ifdef SAVE_CALL_CHAIN |
#ifdef SAVE_CALL_CHAIN |
/* Fill in the pc and argument information for up to NFRAMES of my */ |
/* Fill in the pc and argument information for up to NFRAMES of my */ |
/* callers. Ignore my frame and my callers frame. */ |
/* callers. Ignore my frame and my callers frame. */ |
|
|
|
#ifdef OPENBSD |
|
# define FR_SAVFP fr_fp |
|
# define FR_SAVPC fr_pc |
|
#else |
|
# define FR_SAVFP fr_savfp |
|
# define FR_SAVPC fr_savpc |
|
#endif |
|
|
void GC_save_callers (info) |
void GC_save_callers (info) |
struct callinfo info[NFRAMES]; |
struct callinfo info[NFRAMES]; |
{ |
{ |
Line 2261 struct callinfo info[NFRAMES]; |
|
Line 2543 struct callinfo info[NFRAMES]; |
|
|
|
frame = (struct frame *) GC_save_regs_in_stack (); |
frame = (struct frame *) GC_save_regs_in_stack (); |
|
|
for (fp = frame -> fr_savfp; fp != 0 && nframes < NFRAMES; |
for (fp = frame -> FR_SAVFP; fp != 0 && nframes < NFRAMES; |
fp = fp -> fr_savfp, nframes++) { |
fp = fp -> FR_SAVFP, nframes++) { |
register int i; |
register int i; |
|
|
info[nframes].ci_pc = fp->fr_savpc; |
info[nframes].ci_pc = fp->FR_SAVPC; |
for (i = 0; i < NARGS; i++) { |
for (i = 0; i < NARGS; i++) { |
info[nframes].ci_arg[i] = ~(fp->fr_arg[i]); |
info[nframes].ci_arg[i] = ~(fp->fr_arg[i]); |
} |
} |