[PATCH v2 4/6] target/riscv: Add pointer masking tb flags

[Alexey Baturo <baturo.alexey@gmail.com>]

From: Alexey Baturo <baturo.alexey@gmail.com>

Signed-off-by: Alexey Baturo <baturo.alexey@gmail.com>
---
 target/riscv/cpu.h        | 15 +++++++++------
 target/riscv/cpu_helper.c |  3 +++
 target/riscv/translate.c  |  5 +++++
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index c607a94bba..038b86db4b 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -538,14 +538,17 @@ FIELD(TB_FLAGS, VILL, 14, 1)
 FIELD(TB_FLAGS, VSTART_EQ_ZERO, 15, 1)
 /* The combination of MXL/SXL/UXL that applies to the current cpu mode. */
 FIELD(TB_FLAGS, XL, 16, 2)
-FIELD(TB_FLAGS, VTA, 18, 1)
-FIELD(TB_FLAGS, VMA, 19, 1)
+/* If pointer masking should be applied and address sign extended */
+FIELD(TB_FLAGS, PM_PMM, 18, 2)
+FIELD(TB_FLAGS, PM_SIGNEXTEND, 20, 1)
+FIELD(TB_FLAGS, VTA, 21, 1)
+FIELD(TB_FLAGS, VMA, 22, 1)
 /* Native debug itrigger */
-FIELD(TB_FLAGS, ITRIGGER, 20, 1)
+FIELD(TB_FLAGS, ITRIGGER, 23, 1)
 /* Virtual mode enabled */
-FIELD(TB_FLAGS, VIRT_ENABLED, 21, 1)
-FIELD(TB_FLAGS, PRIV, 22, 2)
-FIELD(TB_FLAGS, AXL, 24, 2)
+FIELD(TB_FLAGS, VIRT_ENABLED, 24, 1)
+FIELD(TB_FLAGS, PRIV, 25, 2)
+FIELD(TB_FLAGS, AXL, 27, 2)
 
 #ifdef TARGET_RISCV32
 #define riscv_cpu_mxl(env)  ((void)(env), MXL_RV32)
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index 47f325294e..7c33369cf1 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -68,6 +68,7 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc,
     RISCVCPU *cpu = env_archcpu(env);
     RISCVExtStatus fs, vs;
     uint32_t flags = 0;
+    bool pm_signext = !riscv_cpu_bare_mode(env);
 
     *pc = env->xl == MXL_RV32 ? env->pc & UINT32_MAX : env->pc;
     *cs_base = 0;
@@ -135,6 +136,8 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc,
     flags = FIELD_DP32(flags, TB_FLAGS, VS, vs);
     flags = FIELD_DP32(flags, TB_FLAGS, XL, env->xl);
     flags = FIELD_DP32(flags, TB_FLAGS, AXL, cpu_address_xl(env));
+    flags = FIELD_DP32(flags, TB_FLAGS, PM_PMM, riscv_pm_get_pmm(env));
+    flags = FIELD_DP32(flags, TB_FLAGS, PM_SIGNEXTEND, pm_signext);
 
     *pflags = flags;
 }
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 6b4b9a671c..1eb501e0d3 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -103,6 +103,9 @@ typedef struct DisasContext {
     bool vl_eq_vlmax;
     CPUState *cs;
     TCGv zero;
+    /* pointer masking extension */
+    uint8_t pm_pmm;
+    bool pm_signext;
     /* Use icount trigger for native debug */
     bool itrigger;
     /* FRM is known to contain a valid value. */
@@ -1176,6 +1179,8 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
     ctx->xl = FIELD_EX32(tb_flags, TB_FLAGS, XL);
     ctx->address_xl = FIELD_EX32(tb_flags, TB_FLAGS, AXL);
     ctx->cs = cs;
+    ctx->pm_pmm = FIELD_EX32(tb_flags, TB_FLAGS, PM_PMM);
+    ctx->pm_signext = FIELD_EX32(tb_flags, TB_FLAGS, PM_SIGNEXTEND);
     ctx->itrigger = FIELD_EX32(tb_flags, TB_FLAGS, ITRIGGER);
     ctx->zero = tcg_constant_tl(0);
     ctx->virt_inst_excp = false;
-- 
2.34.1