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| author | Andre Vieira <andre.simoesdiasvieira@arm.com> | 2016-09-22 17:02:47 +0000 |
|---|---|---|
| committer | Andre Vieira <avieira@gcc.gnu.org> | 2016-09-22 17:02:47 +0000 |
| commit | 0ee70cc0000fe25484cb0d3b2ac2904d2007e5cf (patch) | |
| tree | 2b6549bc452c8fe8fec854d66c6c770e37be25f7 /gcc/doc/invoke.texi | |
| parent | 31e9f857d5408a69bc6c1eac793103c73ce6eed0 (diff) | |
| download | gcc-0ee70cc0000fe25484cb0d3b2ac2904d2007e5cf.zip gcc-0ee70cc0000fe25484cb0d3b2ac2904d2007e5cf.tar.gz gcc-0ee70cc0000fe25484cb0d3b2ac2904d2007e5cf.tar.bz2 | |
[ARM] Add support for -mpure-code option
gcc/ChangeLog:
2016-09-22 Andre Vieira <andre.simoesdiasvieira@arm.com>
Terry Guo <terry.guo@arm.com>
* target.def (elf_flags_numeric): New target hook.
* targhooks.h (default_asm_elf_flags_numeric): New.
* varasm.c (default_asm_elf_flags_numeric): New.
(default_elf_asm_named_section): Use new target hook.
* config/arm/arm.opt (mpure-code): New.
* config/arm/arm.h (SECTION_ARM_PURECODE): New.
* config/arm/arm.c (arm_asm_init_sections): Add section
attribute to default text section if -mpure-code.
(arm_option_check_internal): Diagnose use of option with
non supported targets and/or options.
(arm_asm_elf_flags_numeric): New.
(arm_function_section): New.
(arm_elf_section_type_flags): New.
* config/arm/elf.h (JUMP_TABLES_IN_TEXT_SECTION): Disable
for -mpure-code.
* gcc/doc/texi (TARGET_ASM_ELF_FLAGS_NUMERIC): New.
* gcc/doc/texi.in (TARGET_ASM_ELF_FLAGS_NUMERIC): Likewise.
gcc/testsuite/ChangeLog:
2016-09-22 Andre Vieira <andre.simoesdiasvieira@arm.com>
Terry Guo <terry.guo@arm.com>
* gcc.target/arm/pure-code/ffunction-sections.c: New.
* gcc.target/arm/pure-code/no-literal-pool.c: New.
* gcc.target/arm/pure-code/pure-code.exp: New.
Co-Authored-By: Terry Guo <terry.guo@arm.com>
From-SVN: r240379
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index cfba069..d474da6 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -641,7 +641,8 @@ Objective-C and Objective-C++ Dialects}. -mneon-for-64bits @gol -mslow-flash-data @gol -masm-syntax-unified @gol --mrestrict-it} +-mrestrict-it @gol +-mpure-code} @emph{AVR Options} @gccoptlist{-mmcu=@var{mcu} -maccumulate-args -mbranch-cost=@var{cost} @gol @@ -14844,6 +14845,14 @@ Print CPU tuning information as comment in assembler file. This is an option used only for regression testing of the compiler and not intended for ordinary use in compiling code. This option is disabled by default. + +@item -mpure-code +@opindex mpure-code +Do not allow constant data to be placed in code sections. +Additionally, when compiling for ELF object format give all text sections the +ELF processor-specific section attribute @code{SHF_ARM_PURECODE}. This option +is only available when generating non-pic code for ARMv7-M targets. + @end table @node AVR Options |