From: mengqinggang <mengqinggang@loongson.cn>
To: binutils@sourceware.org
Cc: xuchenghua@loongson.cn, liuzhensong@loongson.cn,
chenglulu@loongson.cn, xry111@xry111.site, i.swmail@xen0n.name,
maskray@google.com, mengqinggang <mengqinggang@loongson.cn>
Subject: [PATCH v1 0/6] LoongArch linker relaxation support.
Date: Mon, 5 Dec 2022 16:04:47 +0800 [thread overview]
Message-ID: <20221205080453.1352069-1-mengqinggang@loongson.cn> (raw)
There are two instrunction sequence can be relaxed in LoongArch. The first one
is "pcala12i + addi.d" which can be relaxed to pcaddi. Another one is
"pcalau12i + ld.d" which can be relaxed to "pcalau12i + addi.d". And it can be
relaxed to pcaddi one more time. Pcaddi instrunction can address a signed 22
bits 4-byte alinged offset relative to pc.
Now, only the instrunctions expand from macro (la.local, la.got, etc.) at
assembly time can be relaxed, because gcc instruction scheduling causes relax
unable to handle some special cases. Gcc can add -mno-explicit-relocs option
to generate macro instrunction.
mengqinggang (6):
LoongArch: include: Add support for linker relaxation.
LoongArch: bfd: Add support for linker relaxation.
LoongArch: opcodes: Add support for linker relaxation.
LoongArch: binutils: Add support for linker relaxation.
LoongArch: gas: Add support for linker relaxation.
LoongArch: ld: Add support for linker relaxation.
bfd/bfd-in2.h | 8 +
bfd/elfnn-loongarch.c | 582 +++++++++++++--
bfd/elfxx-loongarch.c | 676 +++++++++++++-----
bfd/elfxx-loongarch.h | 10 +-
bfd/libbfd.h | 8 +
bfd/reloc.c | 22 +
binutils/readelf.c | 84 ++-
binutils/testsuite/binutils-all/readelf.exp | 13 +-
gas/config/tc-loongarch.c | 412 +++++++++--
gas/config/tc-loongarch.h | 45 +-
gas/testsuite/gas/all/align.d | 5 +-
gas/testsuite/gas/all/gas.exp | 10 +-
gas/testsuite/gas/all/relax.d | 4 +
gas/testsuite/gas/elf/dwarf-5-irp.d | 3 +-
gas/testsuite/gas/elf/dwarf-5-loc0.d | 3 +-
gas/testsuite/gas/elf/dwarf2-11.d | 3 +-
gas/testsuite/gas/elf/dwarf2-15.d | 3 +-
gas/testsuite/gas/elf/dwarf2-16.d | 3 +-
gas/testsuite/gas/elf/dwarf2-17.d | 3 +-
gas/testsuite/gas/elf/dwarf2-18.d | 3 +-
gas/testsuite/gas/elf/dwarf2-19.d | 3 +-
gas/testsuite/gas/elf/dwarf2-5.d | 3 +-
gas/testsuite/gas/elf/ehopt0.d | 3 +
gas/testsuite/gas/elf/elf.exp | 3 +
gas/testsuite/gas/elf/section11.d | 4 +-
gas/testsuite/gas/lns/lns.exp | 1 +
gas/testsuite/gas/loongarch/jmp_op.d | 65 +-
gas/testsuite/gas/loongarch/li.d | 9 +-
gas/testsuite/gas/loongarch/macro_op.d | 69 +-
.../gas/loongarch/macro_op_large_abs.d | 103 +--
.../gas/loongarch/macro_op_large_pc.d | 103 +--
gas/testsuite/gas/loongarch/relax_align.d | 25 +
gas/testsuite/gas/loongarch/relax_align.s | 5 +
gas/testsuite/gas/loongarch/uleb128.d | 35 +
gas/testsuite/gas/loongarch/uleb128.s | 20 +
include/elf/loongarch.h | 20 +
include/opcode/loongarch.h | 3 +
ld/emultempl/loongarchelf.em | 3 +
ld/testsuite/ld-elf/compressed1d.d | 3 +
ld/testsuite/ld-elf/pr26936.d | 4 +-
ld/testsuite/ld-loongarch-elf/disas-jirl.d | 4 +-
ld/testsuite/ld-loongarch-elf/jmp_op.d | 65 +-
ld/testsuite/ld-loongarch-elf/macro_op.d | 138 ++--
ld/testsuite/ld-loongarch-elf/relax-align.dd | 7 +
ld/testsuite/ld-loongarch-elf/relax-align.s | 9 +
ld/testsuite/ld-loongarch-elf/relax.dd | 5 +
ld/testsuite/ld-loongarch-elf/relax.exp | 65 ++
ld/testsuite/ld-loongarch-elf/relax.s | 50 ++
ld/testsuite/ld-loongarch-elf/uleb128.dd | 10 +
ld/testsuite/ld-loongarch-elf/uleb128.s | 21 +
opcodes/loongarch-opc.c | 5 +-
51 files changed, 2223 insertions(+), 540 deletions(-)
create mode 100644 gas/testsuite/gas/loongarch/relax_align.d
create mode 100644 gas/testsuite/gas/loongarch/relax_align.s
create mode 100644 gas/testsuite/gas/loongarch/uleb128.d
create mode 100644 gas/testsuite/gas/loongarch/uleb128.s
create mode 100644 ld/testsuite/ld-loongarch-elf/relax-align.dd
create mode 100644 ld/testsuite/ld-loongarch-elf/relax-align.s
create mode 100644 ld/testsuite/ld-loongarch-elf/relax.dd
create mode 100644 ld/testsuite/ld-loongarch-elf/relax.exp
create mode 100644 ld/testsuite/ld-loongarch-elf/relax.s
create mode 100644 ld/testsuite/ld-loongarch-elf/uleb128.dd
create mode 100644 ld/testsuite/ld-loongarch-elf/uleb128.s
--
2.36.0
next reply other threads:[~2022-12-05 8:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-05 8:04 mengqinggang [this message]
2022-12-05 8:04 ` [PATCH v1 1/6] LoongArch: include: Add support for linker relaxation mengqinggang
2022-12-05 8:24 ` Xi Ruoyao
2022-12-06 2:59 ` mengqinggang
2022-12-05 8:04 ` [PATCH v1 2/6] LoongArch: bfd: " mengqinggang
2022-12-05 8:04 ` [PATCH v1 3/6] LoongArch: opcodes: " mengqinggang
2022-12-05 9:43 ` Andreas Schwab
2022-12-05 8:04 ` [PATCH v1 4/6] LoongArch: binutils: " mengqinggang
2022-12-05 8:04 ` [PATCH v1 5/6] LoongArch: gas: " mengqinggang
2022-12-05 9:47 ` Andreas Schwab
2022-12-05 8:04 ` [PATCH v1 6/6] LoongArch: ld: " mengqinggang
2022-12-05 8:31 ` Xi Ruoyao
2022-12-05 8:43 ` [PATCH v1 0/6] LoongArch linker relaxation support Xi Ruoyao
2022-12-06 1:58 ` mengqinggang
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