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| author | Mickael Guene <mickael.guene@st.com> | 2016-01-20 12:53:50 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2016-01-20 12:53:50 +0000 |
| commit | 91f68a68f992e3f6c3da26c616b5257230bd1eec (patch) | |
| tree | 9e549da0d8aaacafb6231069425241f003357a14 /gas/config | |
| parent | be56871ee8f65c51b9eee611532ed036a71a72e0 (diff) | |
| download | gdb-91f68a68f992e3f6c3da26c616b5257230bd1eec.zip gdb-91f68a68f992e3f6c3da26c616b5257230bd1eec.tar.gz gdb-91f68a68f992e3f6c3da26c616b5257230bd1eec.tar.bz2 | |
Add support for an ARM specific 'y' section attribute flag to mark the section as NOREAD.
bfd/ChangeLog:
* elf32-arm.c ((elf32_arm_special_sections): Remove catch of noread
section using '.text.noread' pattern.
gas/ChangeLog:
* config/obj-elf.c (obj_elf_change_section) : Allow arm section with
SHF_ARM_NOREAD section flag.
* config/tc-arm.h (md_elf_section_letter) : Implement this hook to
handle letter 'y'.
(arm_elf_section_letter) : Declare it.
* config/tc-arm.c (arm_elf_section_letter): Handle letter 'y' to set
SHF_ARM_NOREAD section flag.
* doc/c-arm.texi (ARM section attribute 'y'): Document it.
gas/testsuite/ChangeLog:
* gas/arm/section-execute-only.s: New test case.
* gas/arm/section-execute-only.d: Expected output.
ld/testsuite/ChangeLog:
* ld-arm/thumb1-noread-not-present-mixing-two-section.s: Add 'y'
attribute usage.
* ld-arm/thumb1-noread-present-one-section.s: Likewise.
* ld-arm/thumb1-noread-present-two-section.s: Likewise.
* ld-arm/thumb1-input-section-flag-match.s: Likewise.
binutils/ChangeLog:
* readelf.c (get_elf_section_flags): Display y letter for section
with SHF_ARM_NOREAD section flag in readelf section output.
(process_section_headers): Add y letter in readelf section output
key mapping for ARM architecture.
Diffstat (limited to 'gas/config')
| -rw-r--r-- | gas/config/obj-elf.c | 9 | ||||
| -rw-r--r-- | gas/config/tc-arm.c | 9 | ||||
| -rw-r--r-- | gas/config/tc-arm.h | 3 |
3 files changed, 21 insertions, 0 deletions
diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c index f4726ff..6d6d5f3 100644 --- a/gas/config/obj-elf.c +++ b/gas/config/obj-elf.c @@ -64,6 +64,10 @@ #include "elf/nios2.h" #endif +#ifdef TC_ARM +#include "elf/arm.h" +#endif + static void obj_elf_line (int); static void obj_elf_size (int); static void obj_elf_type (int); @@ -674,6 +678,11 @@ obj_elf_change_section (const char *name, /* RX init/fini arrays can and should have the "awx" attributes set. */ ; #endif +#ifdef TC_ARM + else if (attr == (SHF_EXECINSTR | SHF_ARM_NOREAD | SHF_ALLOC)) + /* ARM can have code section with SHF_ARM_NOREAD attribute. */ + ; +#endif else { if (group_name == NULL) diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 046abe5..4a16267 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -24091,6 +24091,15 @@ arm_fix_adjustable (fixS * fixP) #endif /* defined (OBJ_ELF) || defined (OBJ_COFF) */ #ifdef OBJ_ELF +bfd_vma +arm_elf_section_letter (int letter, char **ptrmsg) +{ + if (letter == 'y') + return SHF_ARM_NOREAD; + + *ptrmsg = _("unrecognized .section attribute: want a,e,w,x,y,M,S,G,T"); + return -1; +} const char * elf32_arm_target_format (void) diff --git a/gas/config/tc-arm.h b/gas/config/tc-arm.h index 319b2c2..749629c 100644 --- a/gas/config/tc-arm.h +++ b/gas/config/tc-arm.h @@ -114,6 +114,9 @@ extern bfd_boolean tc_start_label_without_colon (void); #define tc_frob_fake_label(S) arm_frob_label (S) #ifdef OBJ_ELF +#define md_elf_section_letter arm_elf_section_letter +extern bfd_vma arm_elf_section_letter (int, char **); + #define md_end arm_md_end extern void arm_md_end (void); bfd_boolean arm_is_eabi (void); |