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| author | Indu Bhagat <indu.bhagat@oracle.com> | 2022-11-15 15:07:04 -0800 |
|---|---|---|
| committer | Arsen Arsenović <arsen@gcc.gnu.org> | 2023-08-07 22:59:42 +0200 |
| commit | dab58c93634bef06fd289f49109b5c370cd5c380 (patch) | |
| tree | 65217d6ab035ee894ceb8af9b9e801f73cd1f346 | |
| parent | dc17ceb3055f56aa3a59c6ef3ae32043d58502d1 (diff) | |
| download | gcc-dab58c93634bef06fd289f49109b5c370cd5c380.zip gcc-dab58c93634bef06fd289f49109b5c370cd5c380.tar.gz gcc-dab58c93634bef06fd289f49109b5c370cd5c380.tar.bz2 | |
bfd: linker: merge .sframe sections
The linker merges all the input .sframe sections. When merging, the
linker verifies that all the input .sframe sections have the same
abi/arch.
The linker uses libsframe library to perform key actions on the
.sframe sections - decode, read, and create output data. This
implies buildsystem changes to make and install libsframe before
libbfd.
The linker places the output .sframe section in a new segment of its
own: PT_GNU_SFRAME. A new segment is not added, however, if the
generated .sframe section is empty.
When a section is discarded from the final link, the corresponding
entries in the .sframe section for those functions are also deleted.
The linker sorts the SFrame FDEs on start address by default and sets
the SFRAME_F_FDE_SORTED flag in the .sframe section.
This patch also adds support for generation of SFrame unwind
information for the .plt* sections on x86_64. SFrame unwind info is
generated for IBT enabled PLT, lazy/non-lazy PLT.
The existing linker option --no-ld-generated-unwind-info has been
adapted to include the control of whether .sframe unwind information
will be generated for the linker generated sections like PLT.
Changes to the linker script have been made as necessary.
ChangeLog:
* Makefile.def: Add install dependency on libsframe for libbfd.
* Makefile.in: Regenerated.
| -rw-r--r-- | Makefile.def | 4 | ||||
| -rw-r--r-- | Makefile.in | 11 |
2 files changed, 15 insertions, 0 deletions
diff --git a/Makefile.def b/Makefile.def index 86d25f4..0c6784b 100644 --- a/Makefile.def +++ b/Makefile.def @@ -459,11 +459,14 @@ dependencies = { module=all-gdbsupport; on=all-gnulib; }; dependencies = { module=all-gdbsupport; on=all-intl; }; // Host modules specific to binutils. +// build libsframe before bfd for encoder/decoder support for linking +// SFrame sections dependencies = { module=configure-bfd; on=configure-libiberty; hard=true; }; dependencies = { module=configure-bfd; on=configure-intl; }; dependencies = { module=all-bfd; on=all-libiberty; }; dependencies = { module=all-bfd; on=all-intl; }; dependencies = { module=all-bfd; on=all-zlib; }; +dependencies = { module=all-bfd; on=all-libsframe; }; dependencies = { module=configure-opcodes; on=configure-libiberty; hard=true; }; dependencies = { module=all-opcodes; on=all-libiberty; }; @@ -489,6 +492,7 @@ dependencies = { module=install-binutils; on=install-opcodes; }; dependencies = { module=install-strip-binutils; on=install-strip-opcodes; }; // Likewise for ld, libctf, and bfd. +dependencies = { module=install-bfd; on=install-libsframe; }; dependencies = { module=install-libctf; on=install-bfd; }; dependencies = { module=install-ld; on=install-bfd; }; dependencies = { module=install-ld; on=install-libctf; }; diff --git a/Makefile.in b/Makefile.in index 214a2a1..35a5d8c 100644 --- a/Makefile.in +++ b/Makefile.in @@ -66354,6 +66354,16 @@ all-stagetrain-bfd: maybe-all-stagetrain-zlib all-stagefeedback-bfd: maybe-all-stagefeedback-zlib all-stageautoprofile-bfd: maybe-all-stageautoprofile-zlib all-stageautofeedback-bfd: maybe-all-stageautofeedback-zlib +all-bfd: maybe-all-libsframe +all-stage1-bfd: maybe-all-stage1-libsframe +all-stage2-bfd: maybe-all-stage2-libsframe +all-stage3-bfd: maybe-all-stage3-libsframe +all-stage4-bfd: maybe-all-stage4-libsframe +all-stageprofile-bfd: maybe-all-stageprofile-libsframe +all-stagetrain-bfd: maybe-all-stagetrain-libsframe +all-stagefeedback-bfd: maybe-all-stagefeedback-libsframe +all-stageautoprofile-bfd: maybe-all-stageautoprofile-libsframe +all-stageautofeedback-bfd: maybe-all-stageautofeedback-libsframe configure-opcodes: configure-libiberty configure-stage1-opcodes: configure-stage1-libiberty configure-stage2-opcodes: configure-stage2-libiberty @@ -66486,6 +66496,7 @@ all-stageautoprofile-binutils: maybe-all-stageautoprofile-libsframe all-stageautofeedback-binutils: maybe-all-stageautofeedback-libsframe install-binutils: maybe-install-opcodes install-strip-binutils: maybe-install-strip-opcodes +install-bfd: maybe-install-libsframe install-libctf: maybe-install-bfd install-ld: maybe-install-bfd install-ld: maybe-install-libctf |