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| author | H.J. Lu <hjl.tools@gmail.com> | 2020-01-17 07:07:55 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2020-01-17 07:07:55 -0800 |
| commit | 42e04b360158941f4d490a38cad14b11593854fa (patch) | |
| tree | 9bf46016eb0fbf13ee7dde413deed9aa4e6ef5f5 /gas | |
| parent | 26f42329caf1dcd4a410de61045208024156169f (diff) | |
| download | gdb-42e04b360158941f4d490a38cad14b11593854fa.zip gdb-42e04b360158941f4d490a38cad14b11593854fa.tar.gz gdb-42e04b360158941f4d490a38cad14b11593854fa.tar.bz2 | |
x86: Add {vex} pseudo prefix
There are 2-byte VEX prefix and 3-byte VEX prefix. 2-byte VEX prefix
can't encode all operands. By default, assembler tries 2-byte VEX prefix
first. {vex3} can be used to force 3-byte VEX prefix. This patch adds
{vex} pseudo prefix and keeps {vex2} for backward compatibility.
gas/
* config/tc-i386.c (_i386_insn): Replace vex_encoding_vex2
with vex_encoding_vex.
(parse_insn): Likewise.
* doc/c-i386.texi: Replace {vex2} with {vex}. Update {vex}
and {vex3} documentation.
* testsuite/gas/i386/pseudos.s: Replace 3 {vex2} tests with
{vex}.
* testsuite/gas/i386/x86-64-pseudos.s: Likewise.
opcodes/
* i386-opc.tbl: Add {vex} pseudo prefix.
* i386-tbl.h: Regenerated.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 11 | ||||
| -rw-r--r-- | gas/config/tc-i386.c | 6 | ||||
| -rw-r--r-- | gas/doc/c-i386.texi | 4 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/pseudos.s | 6 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/x86-64-pseudos.s | 6 |
5 files changed, 22 insertions, 11 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index f2b49b7..e3adaa7 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,14 @@ +2020-01-17 H.J. Lu <hongjiu.lu@intel.com> + + * config/tc-i386.c (_i386_insn): Replace vex_encoding_vex2 + with vex_encoding_vex. + (parse_insn): Likewise. + * doc/c-i386.texi: Replace {vex2} with {vex}. Update {vex} + and {vex3} documentation. + * testsuite/gas/i386/pseudos.s: Replace 3 {vex2} tests with + {vex}. + * testsuite/gas/i386/x86-64-pseudos.s: Likewise. + 2020-01-16 Andre Vieira <andre.simoesdiasvieira@arm.com> PR 25376 diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index 3f7f422..8728725 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -419,7 +419,7 @@ struct _i386_insn enum { vex_encoding_default = 0, - vex_encoding_vex2, + vex_encoding_vex, vex_encoding_vex3, vex_encoding_evex } vec_encoding; @@ -4722,8 +4722,8 @@ parse_insn (char *line, char *mnemonic) i.dir_encoding = dir_encoding_store; break; case 0x4: - /* {vex2} */ - i.vec_encoding = vex_encoding_vex2; + /* {vex} */ + i.vec_encoding = vex_encoding_vex; break; case 0x5: /* {vex3} */ diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi index 4b25803..e8685dd 100644 --- a/gas/doc/c-i386.texi +++ b/gas/doc/c-i386.texi @@ -758,10 +758,10 @@ Different encoding options can be specified via pseudo prefixes: @samp{@{store@}} -- prefer store-form instruction. @item -@samp{@{vex2@}} -- prefer 2-byte VEX prefix for VEX instruction. +@samp{@{vex@}} -- encode with VEX prefix. @item -@samp{@{vex3@}} -- prefer 3-byte VEX prefix for VEX instruction. +@samp{@{vex3@}} -- encode with 3-byte VEX prefix. @item @samp{@{evex@}} -- encode with EVEX prefix. diff --git a/gas/testsuite/gas/i386/pseudos.s b/gas/testsuite/gas/i386/pseudos.s index 419a4c5..19900dd 100644 --- a/gas/testsuite/gas/i386/pseudos.s +++ b/gas/testsuite/gas/i386/pseudos.s @@ -6,9 +6,9 @@ _start: {vex3} {load} vmovaps %xmm7,%xmm2 {vex3} {store} vmovaps %xmm7,%xmm2 vmovaps %xmm7,%xmm2 - {vex2} vmovaps %xmm7,%xmm2 - {vex2} {load} vmovaps %xmm7,%xmm2 - {vex2} {store} vmovaps %xmm7,%xmm2 + {vex} vmovaps %xmm7,%xmm2 + {vex} {load} vmovaps %xmm7,%xmm2 + {vex} {store} vmovaps %xmm7,%xmm2 {vex3} vmovaps (%eax),%xmm2 vmovaps (%eax),%xmm2 {vex2} vmovaps (%eax),%xmm2 diff --git a/gas/testsuite/gas/i386/x86-64-pseudos.s b/gas/testsuite/gas/i386/x86-64-pseudos.s index 33712d3..14b6c92 100644 --- a/gas/testsuite/gas/i386/x86-64-pseudos.s +++ b/gas/testsuite/gas/i386/x86-64-pseudos.s @@ -6,9 +6,9 @@ _start: {vex3} {load} vmovaps %xmm7,%xmm2 {vex3} {store} vmovaps %xmm7,%xmm2 vmovaps %xmm7,%xmm2 - {vex2} vmovaps %xmm7,%xmm2 - {vex2} {load} vmovaps %xmm7,%xmm2 - {vex2} {store} vmovaps %xmm7,%xmm2 + {vex} vmovaps %xmm7,%xmm2 + {vex} {load} vmovaps %xmm7,%xmm2 + {vex} {store} vmovaps %xmm7,%xmm2 {vex3} vmovaps (%rax),%xmm2 vmovaps (%rax),%xmm2 {vex2} vmovaps (%rax),%xmm2 |