mirror of https://gitlab.com/qemu-project/qemu
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
|
|
* QEMU RISC-V Disassembler for xventana.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "disas/riscv.h"
|
|
#include "disas/riscv-xventana.h"
|
|
|
|
typedef enum {
|
|
/* 0 is reserved for rv_op_illegal. */
|
|
ventana_op_vt_maskc = 1,
|
|
ventana_op_vt_maskcn = 2,
|
|
} rv_ventana_op;
|
|
|
|
const rv_opcode_data ventana_opcode_data[] = {
|
|
{ "vt.illegal", rv_codec_illegal, rv_fmt_none, NULL, 0, 0, 0 },
|
|
{ "vt.maskc", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
|
|
{ "vt.maskcn", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
|
|
};
|
|
|
|
void decode_xventanacondops(rv_decode *dec, rv_isa isa)
|
|
{
|
|
rv_inst inst = dec->inst;
|
|
rv_opcode op = rv_op_illegal;
|
|
|
|
switch (((inst >> 0) & 0b11)) {
|
|
case 3:
|
|
switch (((inst >> 2) & 0b11111)) {
|
|
case 30:
|
|
switch (((inst >> 22) & 0b1111111000) | ((inst >> 12) & 0b0000000111)) {
|
|
case 6: op = ventana_op_vt_maskc; break;
|
|
case 7: op = ventana_op_vt_maskcn; break;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
dec->op = op;
|
|
}
|