a8c4d40b57
Clang's integrated assembler supports multiple section with the same name: .section .text,"ax",@progbits,unique,1 nop .section .text,"ax",@progbits,unique,2 nop "unique,N" assigns the number, N, as the section ID, to a section. The valid values of the section ID are between 0 and 4294967295. It can be used to distinguish different sections with the same section name. This is useful with -fno-unique-section-names -ffunction-sections. -ffunction-sections by default generates .text.foo, .text.bar, etc. Using the same string can save lots of space in .strtab. This patch adds section_id to bfd_section and reuses the linker internal bit in BFD section flags, SEC_LINKER_CREATED, for assmebler internal use to mark valid section_id. It also updates objdump to compare section pointers if 2 sections comes from the same file since 2 different sections can have the same section name. bfd/ PR gas/25380 * bfd-in2.h: Regenerated. * ecoff.c (bfd_debug_section): Add section_id. * section.c (bfd_section): Add section_id. (SEC_ASSEMBLER_SECTION_ID): New. (BFD_FAKE_SECTION): Add section_id. binutils/ PR gas/25380 * objdump.c (sym_ok): Return FALSE if 2 sections are in the same file with different section pointers. gas/ PR gas/25380 * config/obj-elf.c (section_match): Removed. (get_section): Also match SEC_ASSEMBLER_SECTION_ID and section_id. (obj_elf_change_section): Replace info and group_name arguments with match_p. Also update the section ID and flags from match_p. (obj_elf_section): Handle "unique,N". Update call to obj_elf_change_section. * config/obj-elf.h (elf_section_match): New. (obj_elf_change_section): Updated. * config/tc-arm.c (start_unwind_section): Update call to obj_elf_change_section. * config/tc-ia64.c (obj_elf_vms_common): Likewise. * config/tc-microblaze.c (microblaze_s_data): Likewise. (microblaze_s_sdata): Likewise. (microblaze_s_rdata): Likewise. (microblaze_s_bss): Likewise. * config/tc-mips.c (s_change_section): Likewise. * config/tc-msp430.c (msp430_profiler): Likewise. * config/tc-rx.c (parse_rx_section): Likewise. * config/tc-tic6x.c (tic6x_start_unwind_section): Likewise. * doc/as.texi: Document "unique,N" in .section directive. * testsuite/gas/elf/elf.exp: Run "unique,N" tests. * testsuite/gas/elf/section15.d: New file. * testsuite/gas/elf/section15.s: Likewise. * testsuite/gas/elf/section16.s: Likewise. * testsuite/gas/elf/section16a.d: Likewise. * testsuite/gas/elf/section16b.d: Likewise. * testsuite/gas/elf/section17.d: Likewise. * testsuite/gas/elf/section17.l: Likewise. * testsuite/gas/elf/section17.s: Likewise. * testsuite/gas/i386/unique.d: Likewise. * testsuite/gas/i386/unique.s: Likewise. * testsuite/gas/i386/x86-64-unique.d: Likewise. * testsuite/gas/i386/i386.exp: Run unique and x86-64-unique. ld/ PR gas/25380 * testsuite/ld-i386/pr22001-1c.S: Use "unique,N" in .section directives. * testsuite/ld-i386/tls-gd1.S: Likewise. * testsuite/ld-x86-64/pr21481b.S: Likewise. |
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.. | ||
all.texi | ||
as.texi | ||
c-aarch64.texi | ||
c-alpha.texi | ||
c-arc.texi | ||
c-arm.texi | ||
c-avr.texi | ||
c-bfin.texi | ||
c-bpf.texi | ||
c-cr16.texi | ||
c-cris.texi | ||
c-csky.texi | ||
c-d10v.texi | ||
c-d30v.texi | ||
c-epiphany.texi | ||
c-h8300.texi | ||
c-hppa.texi | ||
c-i386.texi | ||
c-ia64.texi | ||
c-ip2k.texi | ||
c-lm32.texi | ||
c-m32c.texi | ||
c-m32r.texi | ||
c-m68hc11.texi | ||
c-m68k.texi | ||
c-metag.texi | ||
c-microblaze.texi | ||
c-mips.texi | ||
c-mmix.texi | ||
c-msp430.texi | ||
c-mt.texi | ||
c-nds32.texi | ||
c-nios2.texi | ||
c-ns32k.texi | ||
c-or1k.texi | ||
c-pdp11.texi | ||
c-pj.texi | ||
c-ppc.texi | ||
c-pru.texi | ||
c-riscv.texi | ||
c-rl78.texi | ||
c-rx.texi | ||
c-s12z.texi | ||
c-s390.texi | ||
c-score.texi | ||
c-sh.texi | ||
c-sparc.texi | ||
c-tic6x.texi | ||
c-tic54x.texi | ||
c-tilegx.texi | ||
c-tilepro.texi | ||
c-v850.texi | ||
c-vax.texi | ||
c-visium.texi | ||
c-wasm32.texi | ||
c-xc16x.texi | ||
c-xgate.texi | ||
c-xstormy16.texi | ||
c-xtensa.texi | ||
c-z8k.texi | ||
c-z80.texi | ||
fdl.texi | ||
h8.texi | ||
internals.texi | ||
Makefile.am | ||
Makefile.in |