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Move Darwin10 unwinder fix to a crt shim.

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gcc/
	* config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Adjust to use the
	Darwin10-specific unwinder-shim.
	* config/darwin12.h (LINK_GCC_C_SEQUENCE_SPEC): Remove.
	* config/rs6000/darwin.h (DARWIN_CRT1_SPEC, DARWIN_DYLIB1_SPEC): 
	New to cater for Darwin10 Rosetta.

libgcc/
	* config/unwind-dw2-fde-darwin.c
	(_darwin10_Unwind_FindEnclosingFunction): move from here ...
	* config/darwin10-unwind-find-enc-func.c: … to here.
	* config/t-darwin: Build Darwin10 unwinder shim crt.
	* libgcc/config.host: Add the Darwin10 unwinder shim.

From-SVN: r263765
This commit is contained in:
Iain Sandoe 2018-08-22 11:58:43 +00:00 committed by Iain Sandoe
parent 36bd86fa51
commit a49c064e40
8 changed files with 57 additions and 29 deletions
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17
gcc/ChangeLog
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@ -1,3 +1,11 @@
2018-08-22 Iain Sandoe <iain@sandoe.co.uk>
* config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Adjust to use the
Darwin10-specific unwinder-shim.
* config/darwin12.h (LINK_GCC_C_SEQUENCE_SPEC): Remove.
* config/rs6000/darwin.h (DARWIN_CRT1_SPEC, DARWIN_DYLIB1_SPEC):
New to cater for Darwin10 Rosetta.
2018-08-22 Iain Sandoe <iain@sandoe.co.uk>
* config/i386/i386.c (ix86_output_addr_diff_elt): Move the MACH-O
@ -9,10 +17,11 @@
PR target/81733
PR target/52795
* gcc/dwarf2out.c (FUNC_SECOND_SECT_LABEL): New.
(dwarf2out_switch_text_section): Generate a local label for the second
function sub-section and apply it as the second FDE start label.
* gcc/final.c (final_scan_insn_1): Emit second FDE label after the second
sub-section start.
(dwarf2out_switch_text_section): Generate a local label for the
second function sub-section and apply it as the second FDE start
label.
* gcc/final.c (final_scan_insn_1): Emit second FDE label after the
second sub-section start.
2018-08-22 Richard Biener <rguenther@suse.de>

10
gcc/config/darwin10.h
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@ -25,10 +25,12 @@ along with GCC; see the file COPYING3. If not see
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC \
"%:version-compare(>= 10.6 mmacosx-version-min= -no_compact_unwind) \
%{!static:%{!static-libgcc: \
%:version-compare(>= 10.6 mmacosx-version-min= -lSystem) } } \
%{fno-pic|fno-PIC|fno-pie|fno-PIE|fapple-kext|mkernel|static|mdynamic-no-pic: \
%:version-compare(>= 10.7 mmacosx-version-min= -no_pie) } %G %{!nolibc:%L}"
%{!static:%{!static-libgcc: \
%:version-compare(>= 10.6 mmacosx-version-min= -lSystem) } } \
%{fno-pic|fno-PIC|fno-pie|fno-PIE|fapple-kext|mkernel|static|mdynamic-no-pic: \
%:version-compare(>= 10.7 mmacosx-version-min= -no_pie) } \
%{!nostdlib:%:version-compare(>< 10.6 10.7 mmacosx-version-min= -ld10-uwfef.o)} \
%G %{!nolibc:%L}"
#undef DEF_MIN_OSX_VERSION
#define DEF_MIN_OSX_VERSION "10.6"

8
gcc/config/darwin12.h
View File

@ -18,14 +18,6 @@ You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC \
"%:version-compare(>= 10.6 mmacosx-version-min= -no_compact_unwind) \
%{!static:%{!static-libgcc: \
%:version-compare(>= 10.6 mmacosx-version-min= -lSystem) } } \
%{fno-pic|fno-PIC|fno-pie|fno-PIE|fapple-kext|mkernel|static|mdynamic-no-pic: \
%:version-compare(>= 10.7 mmacosx-version-min= -no_pie) } %G %{!nolibc:%L}"
#undef DEF_MIN_OSX_VERSION
#define DEF_MIN_OSX_VERSION "10.8"

13
gcc/config/rs6000/darwin.h
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@ -119,6 +119,13 @@ extern int darwin_emit_branch_islands;
mcpu=G5:ppc970; \
:ppc}}"
/* We need to jam the crt to 10.5 for 10.6 (Rosetta) use. */
#undef DARWIN_CRT1_SPEC
#define DARWIN_CRT1_SPEC \
"%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \
%:version-compare(>< 10.5 10.7 mmacosx-version-min= -lcrt1.10.5.o) \
%{fgnu-tm: -lcrttms.o}"
/* crt2.o is at least partially required for 10.3.x and earlier. */
#define DARWIN_CRT2_SPEC \
"%{!m64:%:version-compare(!> 10.4 mmacosx-version-min= crt2.o%s)}"
@ -130,6 +137,12 @@ extern int darwin_emit_branch_islands;
{ "darwin_crt2", DARWIN_CRT2_SPEC }, \
{ "darwin_subarch", DARWIN_SUBARCH_SPEC },
/* We need to jam the dylib crt to 10.5 for 10.6 (Rosetta) use. */
#undef DARWIN_DYLIB1_SPEC
#define DARWIN_DYLIB1_SPEC \
"%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \
%:version-compare(>< 10.5 10.7 mmacosx-version-min= -ldylib1.10.5.o)"
/* Output a .machine directive. */
#undef TARGET_ASM_FILE_START
#define TARGET_ASM_FILE_START rs6000_darwin_file_start

8
libgcc/ChangeLog
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@ -1,3 +1,11 @@
2018-08-22 Iain Sandoe <iain@sandoe.co.uk>
* config/unwind-dw2-fde-darwin.c
(_darwin10_Unwind_FindEnclosingFunction): move from here ...
* config/darwin10-unwind-find-enc-func.c: … to here.
* config/t-darwin: Build Darwin10 unwinder shim crt.
* libgcc/config.host: Add the Darwin10 unwinder shim.
2018-08-21 Rasmus Villemoes <rv@rasmusvillemoes.dk>
* config.host: Add crtbegin.o and crtend.o for

13
libgcc/config/darwin10-unwind-find-enc-func.c Normal file
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@ -0,0 +1,13 @@
#include "tconfig.h"
#include "tsystem.h"
#include "unwind-dw2-fde.h"
void *
_darwin10_Unwind_FindEnclosingFunction (void *pc)
{
struct dwarf_eh_bases bases;
const struct dwarf_fde *fde = _Unwind_Find_FDE (pc-1, &bases);
if (fde)
return bases.func;
return NULL;
}

4
libgcc/config/t-darwin
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@ -20,3 +20,7 @@ HOST_LIBGCC2_CFLAGS += -pipe
# Use unwind-dw2-fde-darwin
LIB2ADDEH = $(srcdir)/unwind-dw2.c $(srcdir)/config/unwind-dw2-fde-darwin.c \
$(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
# Patch to __Unwind_Find_Enclosing_Function for Darwin10.
d10-uwfef.o: $(srcdir)/config/darwin10-unwind-find-enc-func.c
$(crt_compile) $(DARWIN_EXTRA_CRT_BUILD_CFLAGS) -mmacosx-version-min=10.6 -c $<

13
libgcc/config/unwind-dw2-fde-darwin.c
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@ -273,16 +273,3 @@ _Unwind_Find_FDE (void *pc, struct dwarf_eh_bases *bases)
the_obj_info);
return ret;
}
void *
_darwin10_Unwind_FindEnclosingFunction (void *pc ATTRIBUTE_UNUSED)
{
#if __MACH__ && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1060)
struct dwarf_eh_bases bases;
const struct dwarf_fde *fde = _Unwind_Find_FDE (pc-1, &bases);
if (fde)
return bases.func;
#endif
return NULL;
}