diff options
Diffstat (limited to 'gcc/config/darwin.c')
| -rw-r--r-- | gcc/config/darwin.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/config/darwin.c b/gcc/config/darwin.c index 5801e431dfd..59c603fb4a2 100644 --- a/gcc/config/darwin.c +++ b/gcc/config/darwin.c @@ -41,6 +41,7 @@ along with GCC; see the file COPYING3. If not see #include "langhooks.h" #include "target.h" #include "tm_p.h" +#include "diagnostic-core.h" #include "toplev.h" #include "hashtab.h" #include "df.h" @@ -78,6 +79,12 @@ along with GCC; see the file COPYING3. If not see of MACHO_SYMBOL_STATIC for the code that handles @code{static} symbol indirection. */ +/* For darwin >= 9 (OSX 10.5) the linker is capable of making the necessary + branch islands and we no longer need to emit darwin stubs. + However, if we are generating code for earlier systems (or for use in the + kernel) the stubs might still be required, and this will be set true. */ +int darwin_emit_branch_islands = false; + /* Section names. */ section * darwin_sections[NUM_DARWIN_SECTIONS]; @@ -98,6 +105,7 @@ output_objc_section_asm_op (const void *directive) section is requested. */ if (! been_here) { + section *saved_in_section = in_section; static const enum darwin_section_enum tomark[] = { /* written, cold -> hot */ @@ -128,6 +136,7 @@ output_objc_section_asm_op (const void *directive) been_here = true; for (i = 0; i < ARRAY_SIZE (tomark); i++) switch_to_section (darwin_sections[tomark[i]]); + switch_to_section (saved_in_section); } output_section_asm_op (directive); } @@ -622,6 +631,9 @@ machopic_indirect_data_reference (rtx orig, rtx reg) rtx machopic_indirect_call_target (rtx target) { + if (! darwin_emit_branch_islands) + return target; + if (GET_CODE (target) != MEM) return target; @@ -1885,12 +1897,19 @@ darwin_override_options (void) flag_exceptions = 0; /* No -fnon-call-exceptions data in kexts. */ flag_non_call_exceptions = 0; + /* We still need to emit branch islands for kernel context. */ + darwin_emit_branch_islands = true; } if (flag_var_tracking && strverscmp (darwin_macosx_version_min, "10.5") >= 0 && debug_info_level >= DINFO_LEVEL_NORMAL && debug_hooks->var_location != do_nothing_debug_hooks.var_location) flag_var_tracking_uninit = 1; + + /* It is assumed that branch island stubs are needed for earlier systems. */ + if (darwin_macosx_version_min + && strverscmp (darwin_macosx_version_min, "10.5") < 0) + darwin_emit_branch_islands = true; } /* Add $LDBL128 suffix to long double builtins. */ |