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target/mips: Introduce decodetree structure for NEC Vr54xx extension 

The decoder is called but doesn't decode anything. This will
ease reviewing the next commit.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210801235926.3178085-3-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
master
Philippe Mathieu-Daudé 2021-07-28 13:18:48 +02:00
parent 6629f79f53
commit 9d00539239
5 changed files with 33 additions and 0 deletions
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2
target/mips/tcg/meson.build
View File

@ -2,6 +2,7 @@ gen = [
decodetree.process('rel6.decode', extra_args: ['--decode=decode_isa_rel6']),
decodetree.process('msa.decode', extra_args: '--decode=decode_ase_msa'),
decodetree.process('tx79.decode', extra_args: '--static-decode=decode_tx79'),
decodetree.process('vr54xx.decode', extra_args: '--decode=decode_ext_vr54xx'),
]
mips_ss.add(gen)
@ -19,6 +20,7 @@ mips_ss.add(files(
'translate_addr_const.c',
'txx9_translate.c',
'vr54xx_helper.c',
'vr54xx_translate.c',
))
mips_ss.add(when: 'TARGET_MIPS64', if_true: files(
'tx79_translate.c',

3
target/mips/tcg/translate.c
View File

@ -16098,6 +16098,9 @@ static void decode_opc(CPUMIPSState *env, DisasContext *ctx)
if (cpu_supports_isa(env, INSN_R5900) && decode_ext_txx9(ctx, ctx->opcode)) {
return;
}
if (cpu_supports_isa(env, INSN_VR54XX) && decode_ext_vr54xx(ctx, ctx->opcode)) {
return;
}
/* ISA extensions */
if (ase_msa_available(env) && decode_ase_msa(ctx, ctx->opcode)) {

1
target/mips/tcg/translate.h
View File

@ -201,6 +201,7 @@ bool decode_ext_txx9(DisasContext *ctx, uint32_t insn);
#if defined(TARGET_MIPS64)
bool decode_ext_tx79(DisasContext *ctx, uint32_t insn);
#endif
bool decode_ext_vr54xx(DisasContext *ctx, uint32_t insn);
/*
* Helpers for implementing sets of trans_* functions.

8
target/mips/tcg/vr54xx.decode Normal file
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@ -0,0 +1,8 @@
# MIPS VR5432 instruction set extensions
#
# Copyright (C) 2021 Philippe Mathieu-Daudé
#
# SPDX-License-Identifier: LGPL-2.1-or-later
#
# Reference: VR5432 Microprocessor User’s Manual
# (Document Number U13751EU5V0UM00)

19
target/mips/tcg/vr54xx_translate.c Normal file
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@ -0,0 +1,19 @@
/*
* VR5432 extensions translation routines
*
* Reference: VR5432 Microprocessor User’s Manual
* (Document Number U13751EU5V0UM00)
*
* Copyright (c) 2021 Philippe Mathieu-Daudé
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "tcg/tcg-op.h"
#include "exec/helper-gen.h"
#include "translate.h"
#include "internal.h"
/* Include the auto-generated decoder. */
#include "decode-vr54xx.c.inc"