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| author | Max Filippov <jcmvbkbc@gmail.com> | 2020-05-10 08:03:08 -0700 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2020-06-15 13:01:30 -0700 |
| commit | 7a77f1ac2c6f899faa39e8c0b42d4284d586c44e (patch) | |
| tree | a62d6ddd84a685332322b873f7b2cd4facdc3601 /gas/doc | |
| parent | cae64165f47b64898c4f1982d294862cfae89a47 (diff) | |
| download | gdb-7a77f1ac2c6f899faa39e8c0b42d4284d586c44e.zip gdb-7a77f1ac2c6f899faa39e8c0b42d4284d586c44e.tar.gz gdb-7a77f1ac2c6f899faa39e8c0b42d4284d586c44e.tar.bz2 | |
xtensa: allow runtime ABI selection
2020-06-15 Max Filippov <jcmvbkbc@gmail.com>
bfd/
* elf32-xtensa.c (XSHAL_ABI, XTHAL_ABI_UNDEFINED)
(XTHAL_ABI_WINDOWED, XTHAL_ABI_CALL0): New macros.
(elf32xtensa_abi): New global variable.
(xtensa_abi_choice): New function.
(elf_xtensa_create_plt_entry): Use xtensa_abi_choice instead of
XSHAL_ABI to select PLT code.
gas/
* config/tc-xtensa.c (XTHAL_ABI_WINDOWED, XTHAL_ABI_CALL0): New
macros.
(elf32xtensa_abi): New declaration.
(option_abi_windowed, option_abi_call0): New enum constants.
(md_longopts): Add entries for --abi-windowed and --abi-call0.
(md_parse_option): Add handlers for --abi-windowed and
--abi-call0.
(xtensa_add_config_info): Use xtensa_abi_choice instead of
XSHAL_ABI to format ABI tag.
* doc/as.texi (Target Xtensa options): Add --abi-windowed and
--abi-call0 to the list of options.
* doc/c-xtensa.texi: Add description for options --abi-windowed
and --abi-call0.
* testsuite/gas/xtensa/abi-call0.d: New test definition.
* testsuite/gas/xtensa/abi-windowed.d: New test definition.
* testsuite/gas/xtensa/abi.s: New test source.
include/
* elf/xtensa.h (xtensa_abi_choice): New declaration.
ld/
* emultempl/xtensaelf.em (XSHAL_ABI): Remove macro definition.
(XTHAL_ABI_UNDEFINED, XTHAL_ABI_WINDOWED, XTHAL_ABI_CALL0): New
macros.
(elf32xtensa_abi): New declaration.
(xt_config_info_unpack_and_check): Set elf32xtensa_abi if it is
undefined. Use xtensa_abi_choice instead of XSHAL_ABI to test
ABI tag consistency.
(xtensa_add_config_info): Use xtensa_abi_choice instead of
XSHAL_ABI to format ABI tag.
(PARSE_AND_LIST_PROLOGUE): Define OPTION_ABI_WINDOWED,
OPTION_ABI_CALL0 and declare elf32xtensa_abi.
(PARSE_AND_LIST_LONGOPTS): Add entries for --abi-windowed and
--abi-call0.
(PARSE_AND_LIST_OPTIONS): Add help text for --abi-windowed and
--abi-call0.
(PARSE_AND_LIST_ARGS_CASES): Add handlers for --abi-windowed and
--abi-call0.
* ld.texi: Add description for options --abi-windowed and
--abi-call0.
Diffstat (limited to 'gas/doc')
| -rw-r--r-- | gas/doc/as.texi | 1 | ||||
| -rw-r--r-- | gas/doc/c-xtensa.texi | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/gas/doc/as.texi b/gas/doc/as.texi index dd6c968..f8d892e 100644 --- a/gas/doc/as.texi +++ b/gas/doc/as.texi @@ -626,6 +626,7 @@ gcc(1), ld(1), and the Info entries for @file{binutils} and @file{ld}. [@b{--[no-]transform}] [@b{--rename-section} @var{oldname}=@var{newname}] [@b{--[no-]trampolines}] + [@b{--abi-windowed}|@b{--abi-call0}] @end ifset @ifset Z80 diff --git a/gas/doc/c-xtensa.texi b/gas/doc/c-xtensa.texi index e0c5e1a..b17ee83 100644 --- a/gas/doc/c-xtensa.texi +++ b/gas/doc/c-xtensa.texi @@ -122,6 +122,14 @@ across a greater range of addresses. @xref{Xtensa Jump Relaxation, potentially be out of range. In the absence of such jumps this option does not affect code size or performance. The default is @samp{--trampolines}. + +@item --abi-windowed | --abi-call0 +@kindex --abi-windowed +@kindex --abi-call0 +Choose ABI tag written to the @code{.xtensa.info} section. ABI tag +indicates ABI of the assembly code. A warning is issued by the linker +on an attempt to link object files with inconsistent ABI tags. +Default ABI is chosen by the Xtensa core configuration. @end table @c man end |