[v12,4/7] target/riscv: Add pointer masking tb flags

Commit Message

Alexey Baturo Dec. 5, 2024, 11:23 a.m. UTC

From: Alexey Baturo <[e-mail]>

Signed-off-by: Alexey Baturo <[e-mail]>

Reviewed-by: Richard Henderson <[e-mail]>
Reviewed-by: Alistair Francis <[e-mail]>
Reviewed-by: LIU Zhiwei <[e-mail]>
---
 target/riscv/cpu.h        | 3 +++
 target/riscv/cpu_helper.c | 3 +++
 target/riscv/translate.c  | 5 +++++
 3 files changed, 11 insertions(+)

Patch

diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 74d7076f5a..11e3a6d647 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -631,6 +631,9 @@  FIELD(TB_FLAGS, FCFI_ENABLED, 26, 1)
 FIELD(TB_FLAGS, FCFI_LP_EXPECTED, 27, 1)
 /* zicfiss needs a TB flag so that correct TB is located based on tb flags */
 FIELD(TB_FLAGS, BCFI_ENABLED, 28, 1)
+/* If pointer masking should be applied and address sign extended */
+FIELD(TB_FLAGS, PM_PMM, 29, 2)
+FIELD(TB_FLAGS, PM_SIGNEXTEND, 31, 1)
 
 #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 2558f869f2..ea342fde18 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -126,6 +126,7 @@  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_virt_mem_enabled(env);
 
     *pc = env->xl == MXL_RV32 ? env->pc & UINT32_MAX : env->pc;
     *cs_base = 0;
@@ -210,6 +211,8 @@  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 018be5504f..bb92f36ba1 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -102,6 +102,9 @@  typedef struct DisasContext {
     bool vl_eq_vlmax;
     CPUState *cs;
     TCGv zero;
+    /* actual address width */
+    uint8_t addr_xl;
+    bool addr_signed;
     /* Ztso */
     bool ztso;
     /* Use icount trigger for native debug */
@@ -1230,6 +1233,8 @@  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->addr_xl = 0;
+    ctx->addr_signed = false;
     ctx->ztso = cpu->cfg.ext_ztso;
     ctx->itrigger = FIELD_EX32(tb_flags, TB_FLAGS, ITRIGGER);
     ctx->bcfi_enabled = FIELD_EX32(tb_flags, TB_FLAGS, BCFI_ENABLED);