1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2021 Loongson Technology Corporation Limited
*/
static bool trans_b(DisasContext *ctx, arg_b *a)
{
gen_goto_tb(ctx, 0, ctx->base.pc_next + a->offs);
ctx->base.is_jmp = DISAS_NORETURN;
return true;
}
static bool trans_bl(DisasContext *ctx, arg_bl *a)
{
tcg_gen_movi_tl(cpu_gpr[1], ctx->base.pc_next + 4);
gen_goto_tb(ctx, 0, ctx->base.pc_next + a->offs);
ctx->base.is_jmp = DISAS_NORETURN;
return true;
}
static bool trans_jirl(DisasContext *ctx, arg_jirl *a)
{
TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
tcg_gen_addi_tl(cpu_pc, src1, a->offs);
tcg_gen_movi_tl(dest, ctx->base.pc_next + 4);
gen_set_gpr(a->rd, dest, EXT_NONE);
tcg_gen_lookup_and_goto_ptr();
ctx->base.is_jmp = DISAS_NORETURN;
return true;
}
static void gen_bc(DisasContext *ctx, TCGv src1, TCGv src2,
target_long offs, TCGCond cond)
{
TCGLabel *l = gen_new_label();
tcg_gen_brcond_tl(cond, src1, src2, l);
gen_goto_tb(ctx, 1, ctx->base.pc_next + 4);
gen_set_label(l);
gen_goto_tb(ctx, 0, ctx->base.pc_next + offs);
ctx->base.is_jmp = DISAS_NORETURN;
}
static bool gen_rr_bc(DisasContext *ctx, arg_rr_offs *a, TCGCond cond)
{
TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
TCGv src2 = gpr_src(ctx, a->rd, EXT_NONE);
gen_bc(ctx, src1, src2, a->offs, cond);
return true;
}
static bool gen_rz_bc(DisasContext *ctx, arg_r_offs *a, TCGCond cond)
{
TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
TCGv src2 = tcg_constant_tl(0);
gen_bc(ctx, src1, src2, a->offs, cond);
return true;
}
static bool gen_cz_bc(DisasContext *ctx, arg_c_offs *a, TCGCond cond)
{
TCGv src1 = tcg_temp_new();
TCGv src2 = tcg_constant_tl(0);
tcg_gen_ld8u_tl(src1, cpu_env,
offsetof(CPULoongArchState, cf[a->cj]));
gen_bc(ctx, src1, src2, a->offs, cond);
return true;
}
TRANS(beq, gen_rr_bc, TCG_COND_EQ)
TRANS(bne, gen_rr_bc, TCG_COND_NE)
TRANS(blt, gen_rr_bc, TCG_COND_LT)
TRANS(bge, gen_rr_bc, TCG_COND_GE)
TRANS(bltu, gen_rr_bc, TCG_COND_LTU)
TRANS(bgeu, gen_rr_bc, TCG_COND_GEU)
TRANS(beqz, gen_rz_bc, TCG_COND_EQ)
TRANS(bnez, gen_rz_bc, TCG_COND_NE)
TRANS(bceqz, gen_cz_bc, TCG_COND_EQ)
TRANS(bcnez, gen_cz_bc, TCG_COND_NE)
|
