# undef GC_must_restore_redefined_dlopen
# endif
-#if (defined(DYNAMIC_LOADING) || defined(MSWIN32) || defined(MSWINCE)) \
+#if (defined(DYNAMIC_LOADING) \
+ || defined(MSWIN32) \
+ || defined(MSWINCE) \
+ || defined(CYGWIN32)) \
&& !defined(PCR)
#if !defined(SUNOS4) && !defined(SUNOS5DL) && !defined(IRIX5) && \
- !defined(MSWIN32) && !defined(MSWINCE) && \
+ !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) && \
!(defined(ALPHA) && defined(OSF1)) && \
!defined(HPUX) && !(defined(LINUX) && defined(__ELF__)) && \
!defined(RS6000) && !defined(SCO_ELF) && !defined(DGUX) && \
# define l_addr lm_addr
# define l_name lm_name
#endif
+#ifdef IRIX5
+# include <elf.h>
+# if _MIPS_SIM == _MIPS_SIM_ABI32 /* O32 ABI */
+ /* Don't include <obj_list.h> here. */
+# include <obj.h>
+# else /* N32 or N64 ABIs */
+# include <objlist.h>
+# endif
+#endif
#if defined(NETBSD)
# include <machine/elf_machdep.h>
# endif
# endif
-/* An user-supplied routine that is called to dtermine if a DSO must
+/* An user-supplied routine that is called to determine if a DSO must
be scanned by the gc. */
static int (*GC_has_static_roots)(const char *, void *, size_t);
/* Register the routine. */
Elf32_Dyn _DYNAMIC;
#endif
+#define obj_offset(lm) ((unsigned long)(lm->l_addr))
+
static struct link_map *
GC_FirstDLOpenedLinkMap()
{
struct link_dynamic _DYNAMIC;
#endif
+#define obj_offset(lm) ((unsigned long)(lm->l_addr))
+
static struct link_map *
GC_FirstDLOpenedLinkMap()
{
#endif /* SUNOS4 ... */
-# if defined(SUNOS4) || defined(SUNOS5DL)
+#if defined(IRIX5) && !defined(USE_PROC_FOR_LIBRARIES)
+
+/* Provide struct link map. */
+# if _MIPS_SIM == _MIPS_SIM_ABI32 /* O32 ABI */
+/* Provide our own version of struct obj_list in <obj_list.h> with
+ correctly typed data member. */
+struct obj_list {
+ struct obj *data;
+ struct obj_list *next;
+ struct obj_list *prev;
+} objList;
+
+struct link_map {
+ objList l_ol;
+};
+
+extern objList *__rld_obj_head;
+
+/* Map field names */
+# define l_next l_ol.next
+# define l_addr l_ol.data->o_pelfhdr
+
+# define obj_offset(lm) \
+ ((unsigned long)(lm->l_ol.o_praw - (char *)lm->l_ol.o_base_address))
+# else /* N32 or N64 ABIs */
+struct link_map {
+ ElfW(Obj_Info) l_oi;
+};
+
+extern ElfW(Obj_Info) *__rld_obj_head;
+
+/* Map field names */
+# define l_next l_oi.oi_next
+# define l_addr l_oi.oi_ehdr
+
+/* See gdb/solib-irix.c (fetch_lm_info). */
+# define obj_offset(lm) \
+ ((unsigned long)(lm->l_oi.oi_ehdr - lm->l_oi.oi_orig_ehdr))
+# endif
+
+static struct link_map *
+GC_FirstDLOpenedLinkMap()
+{
+ return (struct link_map *)__rld_obj_head;
+}
+
+#endif /* IRIX5 ... */
+
+# if defined(SUNOS4) || defined(SUNOS5DL) || defined(IRIX5)
/* Add dynamic library data sections to the root set. */
-# if !defined(PCR) && !defined(GC_SOLARIS_PTHREADS) && defined(THREADS)
+# if !defined(PCR) \
+ && !defined(GC_SOLARIS_PTHREADS) && !defined(GC_IRIX_THREADS) \
+ && defined(THREADS)
# ifndef SRC_M3
--> fix mutual exclusion with dlopen
# endif /* We assume M3 programs don't call dlopen for now */
for (lm = GC_FirstDLOpenedLinkMap();
- lm != (struct link_map *) 0; lm = lm->l_next)
+ lm != (struct link_map *) 0; lm = (struct link_map *) lm->l_next)
{
# ifdef SUNOS4
struct exec *e;
((char *) (N_BSSADDR(*e) + e->a_bss + lm->lm_addr)),
TRUE);
# endif
-# ifdef SUNOS5DL
+# if defined(SUNOS5DL) || defined(IRIX5)
ElfW(Ehdr) * e;
ElfW(Phdr) * p;
unsigned long offset;
e = (ElfW(Ehdr) *) lm->l_addr;
p = ((ElfW(Phdr) *)(((char *)(e)) + e->e_phoff));
- offset = ((unsigned long)(lm->l_addr));
+ offset = obj_offset(lm);
for( i = 0; i < (int)(e->e_phnum); ((i++),(p++)) ) {
switch( p->p_type ) {
case PT_LOAD:
#endif /* LINUX */
-#if defined(IRIX5) || (defined(USE_PROC_FOR_LIBRARIES) && !defined(LINUX))
+#if defined(USE_PROC_FOR_LIBRARIES) && !defined(LINUX)
#include <sys/procfs.h>
#include <sys/stat.h>
fd = -1;
}
-# endif /* USE_PROC || IRIX5 */
+# endif /* USE_PROC */
-# if defined(MSWIN32) || defined(MSWINCE)
+# if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32)
# define WIN32_LEAN_AND_MEAN
# define NOSERVICE
}
# endif
-# ifdef MSWINCE
+# if defined(MSWINCE) || defined(CYGWIN32)
/* Do we need to separately register the main static data segment? */
GC_bool GC_register_main_static_data()
{
}
# endif /* DEBUG_VIRTUALQUERY */
- extern GC_bool GC_wnt; /* Is Windows NT derivative. */
- /* Defined and set in os_dep.c. */
+# ifdef CYGWIN32
+# define GC_wnt (TRUE)
+# else
+ extern GC_bool GC_wnt; /* Is Windows NT derivative. */
+ /* Defined and set in os_dep.c. */
+# endif
void GC_register_dynamic_libraries()
{
GC_cond_add_roots(base, limit);
}
-#endif /* MSWIN32 || MSWINCE */
+#endif /* MSWIN32 || MSWINCE || CYGWIN32 */
#if defined(ALPHA) && defined(OSF1)
/*#define DARWIN_DEBUG*/
+/* Writeable sections generally available on Darwin. */
const static struct {
const char *seg;
const char *sect;
} GC_dyld_sections[] = {
{ SEG_DATA, SECT_DATA },
+ /* Used by FSF GCC, but not by OSX system tools, so far. */
+ { SEG_DATA, "__static_data" },
{ SEG_DATA, SECT_BSS },
- { SEG_DATA, SECT_COMMON }
+ { SEG_DATA, SECT_COMMON },
+ /* FSF GCC - zero-sized object sections for targets supporting section
+ anchors. */
+ { SEG_DATA, "__zobj_data" },
+ { SEG_DATA, "__zobj_bss" }
};
-
+
+/* Additional writeable sections:
+
+ GCC on Darwin constucts aligned sections "on demand", where the alignment
+ size is embedded in the section name. Furthermore, there are distintions
+ between sections containing private vs. public symbols.
+
+ It also constructs sections specifically for zero-sized objects, when the
+ target supports section anchors. */
+const char * GC_dyld_add_sect_fmts[] =
+{
+ "__bss%u",
+ "__pu_bss%u",
+ "__zo_bss%u",
+ "__zo_pu_bss%u",
+ NULL
+} ;
+
+/* Currently, mach-o will allow up to a max of 2^15 alignment in an
+ object file. */
+#define L2_MAX_OFILE_ALIGNMENT 15
+
+
#ifdef DARWIN_DEBUG
-static const char *GC_dyld_name_for_hdr(const struct GC_MACH_HEADER *hdr) {
- unsigned long i,c;
- c = _dyld_image_count();
- for(i=0;i<c;i++) if(_dyld_get_image_header(i) == hdr)
- return _dyld_get_image_name(i);
- return NULL;
+static const char *
+GC_dyld_name_for_hdr (const struct GC_MACH_HEADER *hdr)
+{
+ unsigned long i,c;
+ c = _dyld_image_count();
+ for (i=0;i<c;i++)
+ if(_dyld_get_image_header(i) == hdr)
+ return _dyld_get_image_name(i);
+ return NULL;
}
#endif
-
+
+
/* This should never be called by a thread holding the lock */
-static void GC_dyld_image_add(const struct GC_MACH_HEADER *hdr, intptr_t slide)
+static void
+GC_dyld_image_add (const struct GC_MACH_HEADER *hdr, intptr_t slide)
{
- unsigned long start,end,i;
- const struct GC_MACH_SECTION *sec;
- if (GC_no_dls) return;
- for(i=0;i<sizeof(GC_dyld_sections)/sizeof(GC_dyld_sections[0]);i++) {
+ char secnam[16];
+ unsigned long start,end,i,j;
+ const struct GC_MACH_SECTION *sec;
+ const char *fmt;
+ if (GC_no_dls)
+ return;
+
+ for (i=0; i<sizeof(GC_dyld_sections)/sizeof(GC_dyld_sections[0]); i++)
+ {
sec = GC_GETSECTBYNAME (hdr, GC_dyld_sections[i].seg,
GC_dyld_sections[i].sect);
- if(sec == NULL || sec->size == 0) continue;
- start = slide + sec->addr;
- end = start + sec->size;
-# ifdef DARWIN_DEBUG
- GC_printf4("Adding section at %p-%p (%lu bytes) from image %s\n",
- start,end,sec->size,GC_dyld_name_for_hdr(hdr));
-# endif
- GC_add_roots((char*)start,(char*)end);
+ if(sec == NULL || sec->size == 0)
+ continue;
+
+ start = slide + sec->addr;
+ end = start + sec->size;
+
+# ifdef DARWIN_DEBUG
+ GC_printf5("Adding section __DATA,%s at %p-%p (%lu bytes) from image %s\n",
+ GC_dyld_sections[i].sect, start,end,sec->size,GC_dyld_name_for_hdr(hdr));
+# endif
+ GC_add_roots((char*)start,(char*)end);
}
-# ifdef DARWIN_DEBUG
- GC_print_static_roots();
-# endif
+
+ /* Sections constructed on demand. */
+ j=0;
+ while ((fmt = GC_dyld_add_sect_fmts[j]) != NULL)
+ {
+ /* Add our manufactured aligned BSS sections. */
+ for (i=0; i<=L2_MAX_OFILE_ALIGNMENT; i++)
+ {
+ snprintf (secnam, 16, fmt, (unsigned)i);
+ sec = GC_GETSECTBYNAME (hdr, SEG_DATA, secnam);
+ if (sec == NULL || sec->size == 0)
+ continue;
+ start = slide + sec->addr;
+ end = start + sec->size;
+# ifdef DARWIN_DEBUG
+ GC_printf5("Adding section __DATA,%s at %p-%p (%lu bytes) from image %s\n",
+ secnam, start,end,sec->size,GC_dyld_name_for_hdr(hdr));
+# endif
+ GC_add_roots((char*)start,(char*)end);
+ }
+ j++;
+ }
+# ifdef DARWIN_DEBUG
+ GC_print_static_roots();
+# endif
}
/* This should never be called by a thread holding the lock */
-static void GC_dyld_image_remove(const struct GC_MACH_HEADER *hdr,
- intptr_t slide) {
- unsigned long start,end,i;
- const struct GC_MACH_SECTION *sec;
- for(i=0;i<sizeof(GC_dyld_sections)/sizeof(GC_dyld_sections[0]);i++) {
+static void
+GC_dyld_image_remove (const struct GC_MACH_HEADER *hdr, intptr_t slide)
+{
+ char secnam[16];
+ unsigned long start,end,i,j;
+ const struct GC_MACH_SECTION *sec;
+ const char *fmt;
+
+ for (i=0; i<sizeof(GC_dyld_sections)/sizeof(GC_dyld_sections[0]); i++)
+ {
sec = GC_GETSECTBYNAME (hdr, GC_dyld_sections[i].seg,
GC_dyld_sections[i].sect);
- if(sec == NULL || sec->size == 0) continue;
- start = slide + sec->addr;
- end = start + sec->size;
-# ifdef DARWIN_DEBUG
- GC_printf4("Removing section at %p-%p (%lu bytes) from image %s\n",
- start,end,sec->size,GC_dyld_name_for_hdr(hdr));
-# endif
- GC_remove_roots((char*)start,(char*)end);
+ if(sec == NULL || sec->size == 0)
+ continue;
+
+ start = slide + sec->addr;
+ end = start + sec->size;
+# ifdef DARWIN_DEBUG
+ GC_printf5("Removing section __DATA,%s at %p-%p (%lu bytes) from image %s\n",
+ GC_dyld_sections[i].sect, start,end,sec->size,GC_dyld_name_for_hdr(hdr));
+# endif
+ GC_remove_roots((char*)start,(char*)end);
}
-# ifdef DARWIN_DEBUG
- GC_print_static_roots();
-# endif
+
+ /* Remove our on-demand sections. */
+ j=0;
+ while ((fmt = GC_dyld_add_sect_fmts[j]) != NULL)
+ {
+ for (i=0; i<=L2_MAX_OFILE_ALIGNMENT; i++)
+ {
+ snprintf (secnam, 16, fmt, (unsigned)i);
+ sec = GC_GETSECTBYNAME (hdr, SEG_DATA, secnam);
+ if (sec == NULL || sec->size == 0)
+ continue;
+ start = slide + sec->addr;
+ end = start + sec->size;
+# ifdef DARWIN_DEBUG
+ GC_printf5("Removing section __DATA,%s at %p-%p (%lu bytes) from image %s\n",
+ secnam, start,end,sec->size,GC_dyld_name_for_hdr(hdr));
+# endif
+ GC_remove_roots((char*)start,(char*)end);
+ }
+ j++;
+ }
+
+# ifdef DARWIN_DEBUG
+ GC_print_static_roots();
+# endif
}
-void GC_register_dynamic_libraries() {
+void
+GC_register_dynamic_libraries()
+{
/* Currently does nothing. The callbacks are setup by GC_init_dyld()
The dyld library takes it from there. */
}
This should be called BEFORE any thread in created and WITHOUT the
allocation lock held. */
-void GC_init_dyld() {
+void
+GC_init_dyld()
+{
static GC_bool initialized = FALSE;
char *bind_fully_env = NULL;
- if(initialized) return;
+ if(initialized)
+ return;
-# ifdef DARWIN_DEBUG
+# ifdef DARWIN_DEBUG
GC_printf0("Registering dyld callbacks...\n");
-# endif
+# endif
/* Apple's Documentation:
When you call _dyld_register_func_for_add_image, the dynamic linker runtime
linked in the future
*/
- _dyld_register_func_for_add_image(GC_dyld_image_add);
- _dyld_register_func_for_remove_image(GC_dyld_image_remove);
+ _dyld_register_func_for_add_image(GC_dyld_image_add);
+ _dyld_register_func_for_remove_image(GC_dyld_image_remove);
- /* Set this early to avoid reentrancy issues. */
- initialized = TRUE;
+ /* Set this early to avoid reentrancy issues. */
+ initialized = TRUE;
- bind_fully_env = getenv("DYLD_BIND_AT_LAUNCH");
+ bind_fully_env = getenv("DYLD_BIND_AT_LAUNCH");
- if (bind_fully_env == NULL) {
-# ifdef DARWIN_DEBUG
+ if (bind_fully_env == NULL)
+ {
+# ifdef DARWIN_DEBUG
GC_printf0("Forcing full bind of GC code...\n");
-# endif
+# endif
- if(!_dyld_bind_fully_image_containing_address((unsigned long*)GC_malloc))
- GC_abort("_dyld_bind_fully_image_containing_address failed");
+ if (!_dyld_bind_fully_image_containing_address((unsigned long*)GC_malloc))
+ GC_abort("_dyld_bind_fully_image_containing_address failed");
}
-
}
#define HAVE_REGISTER_MAIN_STATIC_DATA
-GC_bool GC_register_main_static_data()
+GC_bool
+GC_register_main_static_data (void)
{
/* Already done through dyld callbacks */
return FALSE;
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