[v9,03/76] target/riscv: rvv-1.0: add mstatus VS field

Message ID	20211029085922.255197-4-frank.chang@sifive.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=w/R+=PR=nongnu.org=qemu-devel-bounces+qemu-devel=archiver.kernel.org@kernel.org> DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E80DA61179 From: frank.chang@sifive.com To: qemu-devel@nongnu.org Subject: [PATCH v9 03/76] target/riscv: rvv-1.0: add mstatus VS field Date: Fri, 29 Oct 2021 16:58:08 +0800 Message-Id: <20211029085922.255197-4-frank.chang@sifive.com> In-Reply-To: <20211029085922.255197-1-frank.chang@sifive.com> References: <20211029085922.255197-1-frank.chang@sifive.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::1030; envelope-from=frank.chang@sifive.com; helo=mail-pj1-x1030.google.com X-Spam_score_int: -1 X-Spam_score: -0.2 X-Spam_bar: / X-Spam_report: (-0.2 / 5.0 requ) DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action Precedence: list Cc: qemu-riscv@nongnu.org, Frank Chang <frank.chang@sifive.com>, Bin Meng <bin.meng@windriver.com>, Richard Henderson <richard.henderson@linaro.org>, Alistair Francis <alistair.francis@wdc.com>, Palmer Dabbelt <palmer@dabbelt.com>, LIU Zhiwei <zhiwei_liu@c-sky.com> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org>
Series	support vector extension v1.0 \| expand [v9,00/76] support vector extension v1.0 [v9,01/76] target/riscv: drop vector 0.7.1 and add 1.0 support [v9,02/76] target/riscv: Use FIELD_EX32() to extract wd field [v9,03/76] target/riscv: rvv-1.0: add mstatus VS field [v9,04/76] target/riscv: rvv-1.0: set mstatus.SD bit if mstatus.VS is dirty [v9,05/76] target/riscv: rvv-1.0: add sstatus VS field [v9,06/76] target/riscv: rvv-1.0: introduce writable misa.v field [v9,07/76] target/riscv: rvv-1.0: add translation-time vector context status [v9,08/76] target/riscv: rvv-1.0: remove rvv related codes from fcsr registers [v9,09/76] target/riscv: rvv-1.0: add vcsr register [v9,10/76] target/riscv: rvv-1.0: add vlenb register [v9,11/76] target/riscv: rvv-1.0: check MSTATUS_VS when accessing vector csr registers [v9,12/76] target/riscv: rvv-1.0: remove MLEN calculations [v9,13/76] target/riscv: rvv-1.0: add fractional LMUL [v9,14/76] target/riscv: rvv-1.0: add VMA and VTA [v9,15/76] target/riscv: rvv-1.0: update check functions [v9,16/76] target/riscv: introduce more imm value modes in translator functions [v9,17/76] target/riscv: rvv:1.0: add translation-time nan-box helper function [v9,18/76] target/riscv: rvv-1.0: remove amo operations instructions [v9,19/76] target/riscv: rvv-1.0: configure instructions [v9,20/76] target/riscv: rvv-1.0: stride load and store instructions [v9,21/76] target/riscv: rvv-1.0: index load and store instructions [v9,22/76] target/riscv: rvv-1.0: fix address index overflow bug of indexed load/store insns [v9,23/76] target/riscv: rvv-1.0: fault-only-first unit stride load [v9,24/76] target/riscv: rvv-1.0: load/store whole register instructions [v9,25/76] target/riscv: rvv-1.0: update vext_max_elems() for load/store insns [v9,26/76] target/riscv: rvv-1.0: take fractional LMUL into vector max elements calculation [v9,27/76] target/riscv: rvv-1.0: floating-point square-root instruction [v9,28/76] target/riscv: rvv-1.0: floating-point classify instructions [v9,29/76] target/riscv: rvv-1.0: count population in mask instruction [v9,30/76] target/riscv: rvv-1.0: find-first-set mask bit instruction [v9,31/76] target/riscv: rvv-1.0: set-X-first mask bit instructions [v9,32/76] target/riscv: rvv-1.0: iota instruction [v9,33/76] target/riscv: rvv-1.0: element index instruction [v9,34/76] target/riscv: rvv-1.0: allow load element with sign-extended [v9,35/76] target/riscv: rvv-1.0: register gather instructions [v9,36/76] target/riscv: rvv-1.0: integer scalar move instructions [v9,37/76] target/riscv: rvv-1.0: floating-point move instruction [v9,38/76] target/riscv: rvv-1.0: floating-point scalar move instructions [v9,39/76] target/riscv: rvv-1.0: whole register move instructions [v9,40/76] target/riscv: rvv-1.0: integer extension instructions [v9,41/76] target/riscv: rvv-1.0: single-width averaging add and subtract instructions [v9,42/76] target/riscv: rvv-1.0: single-width bit shift instructions [v9,43/76] target/riscv: rvv-1.0: integer add-with-carry/subtract-with-borrow [v9,44/76] target/riscv: rvv-1.0: narrowing integer right shift instructions [v9,45/76] target/riscv: rvv-1.0: widening integer multiply-add instructions [v9,46/76] target/riscv: rvv-1.0: single-width saturating add and subtract instructions [v9,47/76] target/riscv: rvv-1.0: integer comparison instructions [v9,48/76] target/riscv: rvv-1.0: floating-point compare instructions [v9,49/76] target/riscv: rvv-1.0: mask-register logical instructions [v9,50/76] target/riscv: rvv-1.0: slide instructions [v9,51/76] target/riscv: rvv-1.0: floating-point slide instructions [v9,52/76] target/riscv: rvv-1.0: narrowing fixed-point clip instructions [v9,53/76] target/riscv: rvv-1.0: single-width floating-point reduction [v9,54/76] target/riscv: rvv-1.0: widening floating-point reduction instructions [v9,55/76] target/riscv: rvv-1.0: single-width scaling shift instructions [v9,56/76] target/riscv: rvv-1.0: remove widening saturating scaled multiply-add [v9,57/76] target/riscv: rvv-1.0: remove vmford.vv and vmford.vf [v9,58/76] target/riscv: rvv-1.0: remove integer extract instruction [v9,59/76] target/riscv: rvv-1.0: floating-point min/max instructions [v9,60/76] target/riscv: introduce floating-point rounding mode enum [v9,61/76] target/riscv: rvv-1.0: floating-point/integer type-convert instructions [v9,62/76] target/riscv: rvv-1.0: widening floating-point/integer type-convert [v9,63/76] target/riscv: add "set round to odd" rounding mode helper function [v9,64/76] target/riscv: rvv-1.0: narrowing floating-point/integer type-convert [v9,65/76] target/riscv: rvv-1.0: relax RV_VLEN_MAX to 1024-bits [v9,66/76] target/riscv: rvv-1.0: implement vstart CSR [v9,67/76] target/riscv: rvv-1.0: trigger illegal instruction exception if frm is not valid [v9,68/76] target/riscv: gdb: support vector registers for rv64 & rv32 [v9,69/76] target/riscv: rvv-1.0: floating-point reciprocal square-root estimate instruction [v9,70/76] target/riscv: rvv-1.0: floating-point reciprocal estimate instruction [v9,71/76] target/riscv: rvv-1.0: rename r2_zimm to r2_zimm11 [v9,72/76] target/riscv: rvv-1.0: add vsetivli instruction [v9,73/76] target/riscv: rvv-1.0: add evl parameter to vext_ldst_us() [v9,74/76] target/riscv: rvv-1.0: add vector unit-stride mask load/store insns [v9,75/76] target/riscv: rvv-1.0: rename vmandnot.mm and vmornot.mm to vmandn.mm and vmorn.mm [v9,76/76] target/riscv: rvv-1.0: update opivv_vadc_check() comment

Message ID

20211029085922.255197-4-frank.chang@sifive.com (mailing list archive)

State

New, archived

Headers

DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E80DA61179
From: frank.chang@sifive.com
To: qemu-devel@nongnu.org
Subject: [PATCH v9 03/76] target/riscv: rvv-1.0: add mstatus VS field
Date: Fri, 29 Oct 2021 16:58:08 +0800
Message-Id: <20211029085922.255197-4-frank.chang@sifive.com>
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Cc: qemu-riscv@nongnu.org, Frank Chang <frank.chang@sifive.com>,
 Bin Meng <bin.meng@windriver.com>,
 Richard Henderson <richard.henderson@linaro.org>,
 Alistair Francis <alistair.francis@wdc.com>,
 Palmer Dabbelt <palmer@dabbelt.com>, LIU Zhiwei <zhiwei_liu@c-sky.com>
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Series

support vector extension v1.0 | expand

Commit Message

Frank Chang Oct. 29, 2021, 8:58 a.m. UTC

From: LIU Zhiwei <zhiwei_liu@c-sky.com>

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/cpu.h        |  2 ++
 target/riscv/cpu_bits.h   |  1 +
 target/riscv/cpu_helper.c | 20 +++++++++++++++++++-
 target/riscv/csr.c        | 12 +++++++++++-
 4 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 5ea2004ae02..48b8f612109 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -352,6 +352,7 @@  int riscv_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
 int riscv_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
 int riscv_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
 bool riscv_cpu_fp_enabled(CPURISCVState *env);
+bool riscv_cpu_vector_enabled(CPURISCVState *env);
 bool riscv_cpu_virt_enabled(CPURISCVState *env);
 void riscv_cpu_set_virt_enabled(CPURISCVState *env, bool enable);
 bool riscv_cpu_two_stage_lookup(int mmu_idx);
@@ -395,6 +396,7 @@  void riscv_cpu_set_fflags(CPURISCVState *env, target_ulong);
 #define TB_FLAGS_PRIV_MMU_MASK                3
 #define TB_FLAGS_PRIV_HYP_ACCESS_MASK   (1 << 2)
 #define TB_FLAGS_MSTATUS_FS MSTATUS_FS
+#define TB_FLAGS_MSTATUS_VS MSTATUS_VS
 
 typedef CPURISCVState CPUArchState;
 typedef RISCVCPU ArchCPU;
diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
index 9913fa9f778..72a716c9990 100644
--- a/target/riscv/cpu_bits.h
+++ b/target/riscv/cpu_bits.h
@@ -375,6 +375,7 @@ 
 #define MSTATUS_UBE         0x00000040
 #define MSTATUS_MPIE        0x00000080
 #define MSTATUS_SPP         0x00000100
+#define MSTATUS_VS          0x00000600
 #define MSTATUS_MPP         0x00001800
 #define MSTATUS_FS          0x00006000
 #define MSTATUS_XS          0x00018000
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index f30ff672f8c..5789c2e9690 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -90,12 +90,17 @@  void cpu_get_tb_cpu_state(CPURISCVState *env, target_ulong *pc,
 
 #ifdef CONFIG_USER_ONLY
     flags |= TB_FLAGS_MSTATUS_FS;
+    flags |= TB_FLAGS_MSTATUS_VS;
 #else
     flags |= cpu_mmu_index(env, 0);
     if (riscv_cpu_fp_enabled(env)) {
         flags |= env->mstatus & MSTATUS_FS;
     }
 
+    if (riscv_cpu_vector_enabled(env)) {
+        flags |= env->mstatus & MSTATUS_VS;
+    }
+
     if (riscv_has_ext(env, RVH)) {
         if (env->priv == PRV_M ||
             (env->priv == PRV_S && !riscv_cpu_virt_enabled(env)) ||
@@ -189,11 +194,24 @@  bool riscv_cpu_fp_enabled(CPURISCVState *env)
     return false;
 }
 
+/* Return true is vector support is currently enabled */
+bool riscv_cpu_vector_enabled(CPURISCVState *env)
+{
+    if (env->mstatus & MSTATUS_VS) {
+        if (riscv_cpu_virt_enabled(env) && !(env->mstatus_hs & MSTATUS_VS)) {
+            return false;
+        }
+        return true;
+    }
+
+    return false;
+}
+
 void riscv_cpu_swap_hypervisor_regs(CPURISCVState *env)
 {
     uint64_t mstatus_mask = MSTATUS_MXR | MSTATUS_SUM | MSTATUS_FS |
                             MSTATUS_SPP | MSTATUS_SPIE | MSTATUS_SIE |
-                            MSTATUS64_UXL;
+                            MSTATUS64_UXL | MSTATUS_VS;
     bool current_virt = riscv_cpu_virt_enabled(env);
 
     g_assert(riscv_has_ext(env, RVH));
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 9f41954894d..9b5bd5d7b49 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -273,6 +273,7 @@  static RISCVException write_fcsr(CPURISCVState *env, int csrno,
 {
 #if !defined(CONFIG_USER_ONLY)
     env->mstatus |= MSTATUS_FS;
+    env->mstatus |= MSTATUS_VS;
 #endif
     env->frm = (val & FSR_RD) >> FSR_RD_SHIFT;
     if (vs(env, csrno) >= 0) {
@@ -307,6 +308,9 @@  static RISCVException read_vxrm(CPURISCVState *env, int csrno,
 static RISCVException write_vxrm(CPURISCVState *env, int csrno,
                                  target_ulong val)
 {
+#if !defined(CONFIG_USER_ONLY)
+    env->mstatus |= MSTATUS_VS;
+#endif
     env->vxrm = val;
     return RISCV_EXCP_NONE;
 }
@@ -321,6 +325,9 @@  static RISCVException read_vxsat(CPURISCVState *env, int csrno,
 static RISCVException write_vxsat(CPURISCVState *env, int csrno,
                                   target_ulong val)
 {
+#if !defined(CONFIG_USER_ONLY)
+    env->mstatus |= MSTATUS_VS;
+#endif
     env->vxsat = val;
     return RISCV_EXCP_NONE;
 }
@@ -335,6 +342,9 @@  static RISCVException read_vstart(CPURISCVState *env, int csrno,
 static RISCVException write_vstart(CPURISCVState *env, int csrno,
                                    target_ulong val)
 {
+#if !defined(CONFIG_USER_ONLY)
+    env->mstatus |= MSTATUS_VS;
+#endif
     env->vstart = val;
     return RISCV_EXCP_NONE;
 }
@@ -535,7 +545,7 @@  static RISCVException write_mstatus(CPURISCVState *env, int csrno,
     mask = MSTATUS_SIE | MSTATUS_SPIE | MSTATUS_MIE | MSTATUS_MPIE |
         MSTATUS_SPP | MSTATUS_FS | MSTATUS_MPRV | MSTATUS_SUM |
         MSTATUS_MPP | MSTATUS_MXR | MSTATUS_TVM | MSTATUS_TSR |
-        MSTATUS_TW;
+        MSTATUS_TW | MSTATUS_VS;
 
     if (riscv_cpu_mxl(env) != MXL_RV32) {
         /*

[v9,03/76] target/riscv: rvv-1.0: add mstatus VS field

Commit Message

Patch