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C++ exceptions for 64-bit Darwin


Four more patches for 64-bit Darwin, three of them for C++ EH, and
one overlooked a while back. These knock off a bunch of failures in
the C++ part of the testsuite, though not all.

Stan

2005-01-05 Stan Shebs <shebs@apple.com>

       * unwind-dw2-fde-darwin.c (examine_objects): Use 64-bit
       Mach-O getters if ppc64.
       * config/darwin.c (darwin_asm_output_dwarf_delta): Obey
       size argument.
       * config/darwin.h (ASM_PREFERRED_EH_DATA_FORMAT): Use
       signed four-byte field for global code case.
       (STARTFILE_SPEC): Avoid crt2.o for 64-bit compilation.

Index: unwind-dw2-fde-darwin.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/unwind-dw2-fde-darwin.c,v
retrieving revision 1.7
diff -p -r1.7 unwind-dw2-fde-darwin.c
*** unwind-dw2-fde-darwin.c    1 Nov 2003 09:59:50 -0000    1.7
--- unwind-dw2-fde-darwin.c    5 Jan 2005 18:01:41 -0000
*************** extern void _keymgr_set_and_unlock_proce
*** 57,64 ****
--- 57,67 ----
 extern void _keymgr_unlock_processwide_ptr (int);

 struct mach_header;
+ struct mach_header_64;
 extern char *getsectdatafromheader (struct mach_header*, const char*,
             const char *, unsigned long *);
+ extern char *getsectdatafromheader_64 (struct mach_header*, const char*,
+             const char *, unsigned long *);

 /* This is referenced from KEYMGR_GCC3_DW2_OBJ_LIST.  */
 struct km_object_info {
*************** examine_objects (void *pc, struct dwarf_
*** 151,161 ****
--- 154,174 ----
     char *fde;
     unsigned long sz;

+ #ifdef __ppc64__
+ fde = getsectdatafromheader_64 ((struct mach_header_64 *) image->mh,
+ "__DATA", "__eh_frame", &sz);
+ #else
fde = getsectdatafromheader (image->mh, "__DATA", "__eh_frame", &sz);
+ #endif
if (fde == NULL)
{
+ #ifdef __ppc64__
+ fde = getsectdatafromheader_64 ((struct mach_header_64 *) image->mh,
+ "__TEXT", "__eh_frame", &sz);
+ #else
fde = getsectdatafromheader (image->mh, "__TEXT",
"__eh_frame", &sz);
+ #endif
if (fde != NULL)
image->examined_p |= IMAGE_IS_TEXT_MASK;
}
Index: config/darwin.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/darwin.c,v
retrieving revision 1.102
diff -p -r1.102 darwin.c
*** config/darwin.c 3 Jan 2005 23:26:47 -0000 1.102
--- config/darwin.c 5 Jan 2005 18:01:41 -0000
*************** darwin_assemble_visibility (tree decl, i
*** 1358,1378 ****
static int darwin_dwarf_label_counter;


 void
! darwin_asm_output_dwarf_delta (FILE *file, int size ATTRIBUTE_UNUSED,
                    const char *lab1, const char *lab2)
 {
   int islocaldiff = (lab1[0] == '*' && lab1[1] == 'L'
              && lab2[0] == '*' && lab2[1] == 'L');

   if (islocaldiff)
     fprintf (file, "\t.set L$set$%d,", darwin_dwarf_label_counter);
   else
!     fprintf (file, "\t%s\t", ".long");
   assemble_name_raw (file, lab1);
   fprintf (file, "-");
   assemble_name_raw (file, lab2);
   if (islocaldiff)
!     fprintf (file, "\n\t.long L$set$%d", darwin_dwarf_label_counter++);
 }

 void
--- 1358,1379 ----
 static int darwin_dwarf_label_counter;

 void
! darwin_asm_output_dwarf_delta (FILE *file, int size,
                    const char *lab1, const char *lab2)
 {
   int islocaldiff = (lab1[0] == '*' && lab1[1] == 'L'
              && lab2[0] == '*' && lab2[1] == 'L');
+   char *directive = (size == 8 ? ".quad" : ".long");

if (islocaldiff)
fprintf (file, "\t.set L$set$%d,", darwin_dwarf_label_counter);
else
! fprintf (file, "\t%s\t", directive);
assemble_name_raw (file, lab1);
fprintf (file, "-");
assemble_name_raw (file, lab2);
if (islocaldiff)
! fprintf (file, "\n\t%s L$set$%d", directive, darwin_dwarf_label_counter++);
}


 void
Index: config/darwin.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/darwin.h,v
retrieving revision 1.109
diff -p -r1.109 darwin.h
*** config/darwin.h    2 Dec 2004 18:42:24 -0000    1.109
--- config/darwin.h    5 Jan 2005 18:01:42 -0000
*************** extern const char *darwin_fix_and_contin
*** 322,327 ****
--- 322,331 ----
       %{shared-libgcc:-lgcc_s -lgcc}} %{Zdynamiclib:-lgcc_s -lgcc}}}"

/* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
+ /* We don't want anything to do with crt2.o in the 64-bit case;
+ testing the PowerPC-specific -m64 flag here is a little irregular,
+ but it's overkill to make copies of this spec for each target
+ arch. */


 #undef  STARTFILE_SPEC
 #define STARTFILE_SPEC  \
*************** extern const char *darwin_fix_and_contin
*** 329,339 ****
      %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
                      %{!static:%{object:-lgcrt0.o} \
                                %{!object:%{preload:-lgcrt0.o} \
!                                  %{!preload:-lgcrt1.o crt2.o%s}}}} \
                 %{!pg:%{static:-lcrt0.o} \
                       %{!static:%{object:-lcrt0.o} \
                                 %{!object:%{preload:-lcrt0.o} \
!                                   %{!preload:-lcrt1.o crt2.o%s}}}}}}"

/* The native Darwin linker doesn't necessarily place files in the order
that they're specified on the link line. Thus, it is pointless
--- 333,343 ----
%{!Zbundle:%{pg:%{static:-lgcrt0.o} \
%{!static:%{object:-lgcrt0.o} \
%{!object:%{preload:-lgcrt0.o} \
! %{!preload:-lgcrt1.o %{!m64: crt2.o%s}}}}} \
%{!pg:%{static:-lcrt0.o} \
%{!static:%{object:-lcrt0.o} \
%{!object:%{preload:-lcrt0.o} \
! %{!preload:-lcrt1.o %{!m64: crt2.o%s}}}}}}}"


 /* The native Darwin linker doesn't necessarily place files in the order
    that they're specified on the link line.  Thus, it is pointless
*************** enum machopic_addr_class {
*** 989,995 ****
 #undef ASM_PREFERRED_EH_DATA_FORMAT
 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
   (((CODE) == 2 && (GLOBAL) == 1) \
!    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect) : \
      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)

 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
--- 993,999 ----
 #undef ASM_PREFERRED_EH_DATA_FORMAT
 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
   (((CODE) == 2 && (GLOBAL) == 1) \
!    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)

#define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \


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