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66f8b2cbbb
Add a flag to control the version of CIE that is generated. By default gas produces CIE version 1, and this continues to be the default after this patch. However, a user can now provide --gdwarf-cie-version=NUMBER to switch to either version 3 or version 4 of CIE, version 2 was never released, and so causes an error as does any number less than 1 or greater than 4. Producing version 4 CIE requires two new fields to be added to the CIE, an address size field, and an segment selector field. For a flat address space the DWARF specification indicates that the segment selector should be 0, and the address size fields just contains the address size in bytes. For now we support 4 or 8 byte addresses, and the segment selector is always produced as 0. At some future time we might need to allow targets to override this. gas/ChangeLog: * as.c (parse_args): Parse --gdwarf-cie-version option. (flag_dwarf_cie_version): New variable. * as.h (flag_dwarf_cie_version): Declare. * dw2gencfi.c (output_cie): Switch from DW_CIE_VERSION to flag_dwarf_cie_version. * doc/as.texi (Overview): Document --gdwarf-cie-version. * NEWS: Likewise. * testsuite/gas/cfi/cfi.exp: Add new tests. * testsuite/gas/cfi/cie-version-0.d: New file. * testsuite/gas/cfi/cie-version-1.d: New file. * testsuite/gas/cfi/cie-version-2.d: New file. * testsuite/gas/cfi/cie-version-3.d: New file. * testsuite/gas/cfi/cie-version-4.d: New file. * testsuite/gas/cfi/cie-version.s: New file. include/ChangeLog: * dwarf2.h (DW_CIE_VERSION): Delete. Change-Id: I9de19461aeb8332b5a57bbfe802953d0725a7ae8 |
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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 | ||