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Hexagon (disas) disassembler 

Add hexagon to disas/meson.build
Add disas/hexagon.c
Add hexagon to include/disas/dis-asm.h

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1612763186-18161-6-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Taylor Simpson 2021-02-07 23:45:55 -06:00 committed by Richard Henderson
parent 45183ccd72
commit a00cfed0ed
3 changed files with 67 additions and 0 deletions
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65
disas/hexagon.c Normal file
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@ -0,0 +1,65 @@
/*
* Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* QEMU Hexagon Disassembler
*/
#include "qemu/osdep.h"
#include "disas/dis-asm.h"
#include "target/hexagon/cpu_bits.h"
/*
* We will disassemble a packet with up to 4 instructions, so we need
* a hefty size buffer.
*/
#define PACKET_BUFFER_LEN 1028
int print_insn_hexagon(bfd_vma memaddr, struct disassemble_info *info)
{
uint32_t words[PACKET_WORDS_MAX];
bool found_end = false;
GString *buf = g_string_sized_new(PACKET_BUFFER_LEN);
int i, len;
for (i = 0; i < PACKET_WORDS_MAX && !found_end; i++) {
int status = (*info->read_memory_func)(memaddr + i * sizeof(uint32_t),
(bfd_byte *)&words[i],
sizeof(uint32_t), info);
if (status) {
if (i > 0) {
break;
}
(*info->memory_error_func)(status, memaddr, info);
return status;
}
if (is_packet_end(words[i])) {
found_end = true;
}
}
if (!found_end) {
(*info->fprintf_func)(info->stream, "<invalid>");
return PACKET_WORDS_MAX * sizeof(uint32_t);
}
len = disassemble_hexagon(words, i, memaddr, buf);
(*info->fprintf_func)(info->stream, "%s", buf->str);
g_string_free(buf, true);
return len;
}

1
disas/meson.build
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@ -6,6 +6,7 @@ common_ss.add(when: 'CONFIG_ARM_A64_DIS', if_true: files('arm-a64.cc'))
common_ss.add_all(when: 'CONFIG_ARM_A64_DIS', if_true: libvixl_ss)
common_ss.add(when: 'CONFIG_ARM_DIS', if_true: files('arm.c'))
common_ss.add(when: 'CONFIG_CRIS_DIS', if_true: files('cris.c'))
common_ss.add(when: 'CONFIG_HEXAGON_DIS', if_true: files('hexagon.c'))
common_ss.add(when: 'CONFIG_HPPA_DIS', if_true: files('hppa.c'))
common_ss.add(when: 'CONFIG_I386_DIS', if_true: files('i386.c'))
common_ss.add(when: 'CONFIG_LM32_DIS', if_true: files('lm32.c'))

1
include/disas/dis-asm.h
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@ -459,6 +459,7 @@ int print_insn_xtensa (bfd_vma, disassemble_info*);
int print_insn_riscv32 (bfd_vma, disassemble_info*);
int print_insn_riscv64 (bfd_vma, disassemble_info*);
int print_insn_rx(bfd_vma, disassemble_info *);
int print_insn_hexagon(bfd_vma, disassemble_info *);
#ifdef CONFIG_CAPSTONE
bool cap_disas_target(disassemble_info *info, uint64_t pc, size_t size);