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[PATCH v4 6/6] target/riscv: Clear vstart_qe_zero flag
|
From: |
Daniel Henrique Barboza |
|
Subject: |
[PATCH v4 6/6] target/riscv: Clear vstart_qe_zero flag |
|
Date: |
Tue, 20 Feb 2024 19:25:10 -0300 |
From: Ivan Klokov <ivan.klokov@syntacore.com>
The vstart_qe_zero flag is set at the beginning of the translation
phase from the env->vstart variable. During the execution phase all
functions will set env->vstart = 0 after a successful execution,
but the vstart_eq_zero flag remains the same as at the start of the
block. This will wrongly cause SIGILLs in translations that requires
env->vstart = 0 and might be reading vstart_eq_zero = false.
This patch adds a new finalize_rvv_inst() helper that is called at the
end of each vector instruction that will both update vstart_eq_zero and
do a mark_vs_dirty().
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1976
Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/riscv/insn_trans/trans_rvbf16.c.inc | 6 +-
target/riscv/insn_trans/trans_rvv.c.inc | 78 ++++++++++++----------
target/riscv/insn_trans/trans_rvvk.c.inc | 12 ++--
target/riscv/translate.c | 6 ++
4 files changed, 56 insertions(+), 46 deletions(-)
diff --git a/target/riscv/insn_trans/trans_rvbf16.c.inc
b/target/riscv/insn_trans/trans_rvbf16.c.inc
index 8ee99df3f3..96e3e73530 100644
--- a/target/riscv/insn_trans/trans_rvbf16.c.inc
+++ b/target/riscv/insn_trans/trans_rvbf16.c.inc
@@ -86,7 +86,7 @@ static bool trans_vfncvtbf16_f_f_w(DisasContext *ctx,
arg_vfncvtbf16_f_f_w *a)
ctx->cfg_ptr->vlenb,
ctx->cfg_ptr->vlenb, data,
gen_helper_vfncvtbf16_f_f_w);
- mark_vs_dirty(ctx);
+ finalize_rvv_inst(ctx);
gen_set_label(over);
return true;
}
@@ -115,7 +115,7 @@ static bool trans_vfwcvtbf16_f_f_v(DisasContext *ctx,
arg_vfwcvtbf16_f_f_v *a)
ctx->cfg_ptr->vlenb,
ctx->cfg_ptr->vlenb, data,
gen_helper_vfwcvtbf16_f_f_v);
- mark_vs_dirty(ctx);
+ finalize_rvv_inst(ctx);
gen_set_label(over);
return true;
}
@@ -146,7 +146,7 @@ static bool trans_vfwmaccbf16_vv(DisasContext *ctx,
arg_vfwmaccbf16_vv *a)
ctx->cfg_ptr->vlenb,
ctx->cfg_ptr->vlenb, data,
gen_helper_vfwmaccbf16_vv);
- mark_vs_dirty(ctx);
+ finalize_rvv_inst(ctx);
gen_set_label(over);
return true;
}
diff --git a/target/riscv/insn_trans/trans_rvv.c.inc
b/target/riscv/insn_trans/trans_rvv.c.inc
index 8c9a0246ef..069ddfd477 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -167,7 +167,7 @@ static bool do_vsetvl(DisasContext *s, int rd, int rs1,
TCGv s2)
gen_helper_vsetvl(dst, tcg_env, s1, s2);
gen_set_gpr(s, rd, dst);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
gen_update_pc(s, s->cur_insn_len);
lookup_and_goto_ptr(s);
@@ -187,7 +187,7 @@ static bool do_vsetivli(DisasContext *s, int rd, TCGv s1,
TCGv s2)
gen_helper_vsetvl(dst, tcg_env, s1, s2);
gen_set_gpr(s, rd, dst);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
gen_update_pc(s, s->cur_insn_len);
lookup_and_goto_ptr(s);
s->base.is_jmp = DISAS_NORETURN;
@@ -636,6 +636,7 @@ static bool ldst_us_trans(uint32_t vd, uint32_t rs1,
uint32_t data,
fn(dest, mask, base, tcg_env, desc);
+ finalize_rvv_inst(s);
return true;
}
@@ -791,6 +792,7 @@ static bool ldst_stride_trans(uint32_t vd, uint32_t rs1,
uint32_t rs2,
fn(dest, mask, base, stride, tcg_env, desc);
+ finalize_rvv_inst(s);
return true;
}
@@ -892,6 +894,7 @@ static bool ldst_index_trans(uint32_t vd, uint32_t rs1,
uint32_t vs2,
fn(dest, mask, base, index, tcg_env, desc);
+ finalize_rvv_inst(s);
return true;
}
@@ -1022,7 +1025,7 @@ static bool ldff_trans(uint32_t vd, uint32_t rs1,
uint32_t data,
fn(dest, mask, base, tcg_env, desc);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
@@ -1079,6 +1082,7 @@ static bool ldst_whole_trans(uint32_t vd, uint32_t rs1,
uint32_t nf,
fn(dest, base, tcg_env, desc);
+ finalize_rvv_inst(s);
return true;
}
@@ -1168,7 +1172,7 @@ do_opivv_gvec(DisasContext *s, arg_rmrr *a, GVecGen3Fn
*gvec_fn,
tcg_env, s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb, data, fn);
}
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
@@ -1219,7 +1223,7 @@ static bool opivx_trans(uint32_t vd, uint32_t rs1,
uint32_t vs2, uint32_t vm,
fn(dest, mask, src1, src2, tcg_env, desc);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
@@ -1244,7 +1248,7 @@ do_opivx_gvec(DisasContext *s, arg_rmrr *a, GVecGen2sFn
*gvec_fn,
gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2),
src1, MAXSZ(s), MAXSZ(s));
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return opivx_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s);
@@ -1377,7 +1381,7 @@ static bool opivi_trans(uint32_t vd, uint32_t imm,
uint32_t vs2, uint32_t vm,
fn(dest, mask, src1, src2, tcg_env, desc);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
@@ -1391,7 +1395,7 @@ do_opivi_gvec(DisasContext *s, arg_rmrr *a, GVecGen2iFn
*gvec_fn,
if (a->vm && s->vl_eq_vlmax && !(s->vta && s->lmul < 0)) {
gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2),
extract_imm(s, a->rs1, imm_mode), MAXSZ(s), MAXSZ(s));
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return opivi_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s, imm_mode);
@@ -1450,7 +1454,7 @@ static bool do_opivv_widen(DisasContext *s, arg_rmrr *a,
tcg_env, s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb,
data, fn);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -1522,7 +1526,7 @@ static bool do_opiwv_widen(DisasContext *s, arg_rmrr *a,
vreg_ofs(s, a->rs2),
tcg_env, s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb, data, fn);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -1590,7 +1594,7 @@ static bool opivv_trans(uint32_t vd, uint32_t vs1,
uint32_t vs2, uint32_t vm,
tcg_gen_gvec_4_ptr(vreg_ofs(s, vd), vreg_ofs(s, 0), vreg_ofs(s, vs1),
vreg_ofs(s, vs2), tcg_env, s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb, data, fn);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
@@ -1723,7 +1727,7 @@ do_opivx_gvec_shift(DisasContext *s, arg_rmrr *a,
GVecGen2sFn32 *gvec_fn,
gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2),
src1, MAXSZ(s), MAXSZ(s));
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return opivx_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s);
@@ -1780,7 +1784,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a)
\
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, \
fns[s->sew]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -1983,7 +1987,7 @@ static bool trans_vmv_v_v(DisasContext *s, arg_vmv_v_v *a)
s->cfg_ptr->vlenb, data,
fns[s->sew]);
}
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -2028,7 +2032,7 @@ static bool trans_vmv_v_x(DisasContext *s, arg_vmv_v_x *a)
fns[s->sew](dest, s1_i64, tcg_env, desc);
}
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -2062,7 +2066,7 @@ static bool trans_vmv_v_i(DisasContext *s, arg_vmv_v_i *a)
tcg_gen_addi_ptr(dest, tcg_env, vreg_ofs(s, a->rd));
fns[s->sew](dest, s1, tcg_env, desc);
}
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -2210,7 +2214,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a)
\
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, \
fns[s->sew - 1]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -2244,7 +2248,7 @@ static bool opfvf_trans(uint32_t vd, uint32_t rs1,
uint32_t vs2,
fn(dest, mask, t1, src2, tcg_env, desc);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
@@ -2319,7 +2323,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a)
\
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, \
fns[s->sew - 1]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -2390,7 +2394,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a)
\
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, \
fns[s->sew - 1]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -2502,7 +2506,7 @@ static bool do_opfv(DisasContext *s, arg_rmr *a,
vreg_ofs(s, a->rs2), tcg_env,
s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb, data, fn);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -2612,7 +2616,7 @@ static bool trans_vfmv_v_f(DisasContext *s, arg_vfmv_v_f
*a)
fns[s->sew - 1](dest, t1, tcg_env, desc);
}
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -2684,7 +2688,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmr *a)
\
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, \
fns[s->sew - 1]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -2732,7 +2736,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmr *a)
\
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, \
fns[s->sew]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -2796,7 +2800,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmr *a)
\
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, \
fns[s->sew - 1]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -2842,7 +2846,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmr *a)
\
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, \
fns[s->sew]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -2928,7 +2932,7 @@ static bool trans_##NAME(DisasContext *s, arg_r *a)
\
vreg_ofs(s, a->rs2), tcg_env, \
s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, data, fn); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -3027,7 +3031,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmr *a)
\
tcg_env, s->cfg_ptr->vlenb, \
s->cfg_ptr->vlenb, \
data, fn); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -3066,7 +3070,7 @@ static bool trans_viota_m(DisasContext *s, arg_viota_m *a)
vreg_ofs(s, a->rs2), tcg_env,
s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb, data, fns[s->sew]);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -3093,7 +3097,7 @@ static bool trans_vid_v(DisasContext *s, arg_vid_v *a)
tcg_env, s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb,
data, fns[s->sew]);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -3272,7 +3276,7 @@ static bool trans_vmv_s_x(DisasContext *s, arg_vmv_s_x *a)
s1 = get_gpr(s, a->rs1, EXT_NONE);
tcg_gen_ext_tl_i64(t1, s1);
vec_element_storei(s, a->rd, 0, t1);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -3320,7 +3324,7 @@ static bool trans_vfmv_s_f(DisasContext *s, arg_vfmv_s_f
*a)
do_nanbox(s, t1, cpu_fpr[a->rs1]);
vec_element_storei(s, a->rd, 0, t1);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -3426,7 +3430,7 @@ static bool trans_vrgather_vx(DisasContext *s, arg_rmrr
*a)
tcg_gen_gvec_dup_i64(s->sew, vreg_ofs(s, a->rd),
MAXSZ(s), MAXSZ(s), dest);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
} else {
static gen_helper_opivx * const fns[4] = {
gen_helper_vrgather_vx_b, gen_helper_vrgather_vx_h,
@@ -3454,7 +3458,7 @@ static bool trans_vrgather_vi(DisasContext *s, arg_rmrr
*a)
endian_ofs(s, a->rs2, a->rs1),
MAXSZ(s), MAXSZ(s));
}
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
} else {
static gen_helper_opivx * const fns[4] = {
gen_helper_vrgather_vx_b, gen_helper_vrgather_vx_h,
@@ -3499,7 +3503,7 @@ static bool trans_vcompress_vm(DisasContext *s, arg_r *a)
tcg_env, s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb, data,
fns[s->sew]);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -3524,7 +3528,7 @@ static bool trans_##NAME(DisasContext *s, arg_##NAME * a)
\
tcg_gen_gvec_2_ptr(vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2), \
tcg_env, maxsz, maxsz, 0, gen_helper_vmvr_v); \
} \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -3595,7 +3599,7 @@ static bool int_ext_op(DisasContext *s, arg_rmr *a,
uint8_t seq)
s->cfg_ptr->vlenb,
s->cfg_ptr->vlenb, data, fn);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
diff --git a/target/riscv/insn_trans/trans_rvvk.c.inc
b/target/riscv/insn_trans/trans_rvvk.c.inc
index 6d640e4596..ae1f40174a 100644
--- a/target/riscv/insn_trans/trans_rvvk.c.inc
+++ b/target/riscv/insn_trans/trans_rvvk.c.inc
@@ -174,7 +174,7 @@ GEN_OPIVX_GVEC_TRANS_CHECK(vandn_vx, andcs, zvkb_vx_check)
vreg_ofs(s, a->rs2), tcg_env, \
s->cfg_ptr->vlenb, s->cfg_ptr->vlenb, \
data, fns[s->sew]); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -266,7 +266,7 @@ GEN_OPIVI_WIDEN_TRANS(vwsll_vi, IMM_ZX, vwsll_vx,
vwsll_vx_check)
tcg_gen_addi_ptr(rd_v, tcg_env, vreg_ofs(s, a->rd)); \
tcg_gen_addi_ptr(rs2_v, tcg_env, vreg_ofs(s, a->rs2)); \
gen_helper_##NAME(rd_v, rs2_v, tcg_env, desc); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -341,7 +341,7 @@ GEN_V_UNMASKED_TRANS(vaesem_vs, vaes_check_vs, ZVKNED_EGS)
tcg_gen_addi_ptr(rd_v, tcg_env, vreg_ofs(s, a->rd)); \
tcg_gen_addi_ptr(rs2_v, tcg_env, vreg_ofs(s, a->rs2)); \
gen_helper_##NAME(rd_v, rs2_v, uimm_v, tcg_env, desc); \
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -405,7 +405,7 @@ GEN_VI_UNMASKED_TRANS(vaeskf2_vi, vaeskf2_check, ZVKNED_EGS)
s->cfg_ptr->vlenb, s->cfg_ptr->vlenb, \
data, gen_helper_##NAME); \
\
- mark_vs_dirty(s); \
+ finalize_rvv_inst(s); \
return true; \
} \
return false; \
@@ -457,7 +457,7 @@ static bool trans_vsha2cl_vv(DisasContext *s, arg_rmrr *a)
s->sew == MO_32 ?
gen_helper_vsha2cl32_vv : gen_helper_vsha2cl64_vv);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
@@ -488,7 +488,7 @@ static bool trans_vsha2ch_vv(DisasContext *s, arg_rmrr *a)
s->sew == MO_32 ?
gen_helper_vsha2ch32_vv : gen_helper_vsha2ch64_vv);
- mark_vs_dirty(s);
+ finalize_rvv_inst(s);
return true;
}
return false;
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 177418b2b9..09efc5f93c 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -674,6 +674,12 @@ static void mark_vs_dirty(DisasContext *ctx)
static inline void mark_vs_dirty(DisasContext *ctx) { }
#endif
+static void finalize_rvv_inst(DisasContext *ctx)
+{
+ mark_vs_dirty(ctx);
+ ctx->vstart_eq_zero = true;
+}
+
static void gen_set_rm(DisasContext *ctx, int rm)
{
if (ctx->frm == rm) {
--
2.43.2
- [PATCH v4 0/6] riscv: set vstart_eq_zero on mark_vs_dirty, Daniel Henrique Barboza, 2024/02/20
- [PATCH v4 1/6] trans_rvv.c.inc: mark_vs_dirty() before loads and stores, Daniel Henrique Barboza, 2024/02/20
- [PATCH v4 2/6] trans_rvv.c.inc: remove 'is_store' bool from load/store fns, Daniel Henrique Barboza, 2024/02/20
- [PATCH v4 3/6] target/riscv: remove 'over' brconds from vector trans, Daniel Henrique Barboza, 2024/02/20
- [PATCH v4 4/6] target/riscv/vector_helper.c: set vstart = 0 in GEN_VEXT_VSLIDEUP_VX(), Daniel Henrique Barboza, 2024/02/20
- [PATCH v4 5/6] trans_rvv.c.inc: remove redundant mark_vs_dirty() calls, Daniel Henrique Barboza, 2024/02/20
- [PATCH v4 6/6] target/riscv: Clear vstart_qe_zero flag,
Daniel Henrique Barboza <=