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unwind-dw2-fde-darwin.c (examine_objects): Use 64-bit Mach-O getters if ppc64. 

* 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.

From-SVN: r92962
This commit is contained in:
Stan Shebs 2005-01-05 18:39:43 +00:00 committed by Stan Shebs
parent a6cc7e85de
commit 59d8fe2722
4 changed files with 34 additions and 6 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
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.
2005-01-05 Roger Sayle <roger@eyesopen.com>
PR middle-end/19100

7
gcc/config/darwin.c
View File

@ -1358,21 +1358,22 @@ darwin_assemble_visibility (tree decl, int vis)
static int darwin_dwarf_label_counter;
void
darwin_asm_output_dwarf_delta (FILE *file, int size ATTRIBUTE_UNUSED,
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", ".long");
fprintf (file, "\t%s\t", directive);
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++);
fprintf (file, "\n\t%s L$set$%d", directive, darwin_dwarf_label_counter++);
}
void

10
gcc/config/darwin.h
View File

@ -322,6 +322,10 @@ extern const char *darwin_fix_and_continue_switch;
%{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 \
@ -329,11 +333,11 @@ extern const char *darwin_fix_and_continue_switch;
%{!Zbundle:%{pg:%{static:-lgcrt0.o} \
%{!static:%{object:-lgcrt0.o} \
%{!object:%{preload:-lgcrt0.o} \
%{!preload:-lgcrt1.o crt2.o%s}}}} \
%{!preload:-lgcrt1.o %{!m64: crt2.o%s}}}}} \
%{!pg:%{static:-lcrt0.o} \
%{!static:%{object:-lcrt0.o} \
%{!object:%{preload:-lcrt0.o} \
%{!preload:-lcrt1.o crt2.o%s}}}}}}"
%{!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
@ -989,7 +993,7 @@ enum machopic_addr_class {
#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_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) \

13
gcc/unwind-dw2-fde-darwin.c
View File

@ -57,8 +57,11 @@ extern void _keymgr_set_and_unlock_processwide_ptr (int, void *);
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 {
@ -151,11 +154,21 @@ examine_objects (void *pc, struct dwarf_eh_bases *bases, int dont_alloc)
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;
}