diff mbox series

[v4,1/9] target/arm: Introduce curr_insn_len

Message ID 20220906100528.343244-2-richard.henderson@linaro.org
State Superseded
Headers show
Series target/arm: pc-relative translation blocks | expand

Commit Message

Richard Henderson Sept. 6, 2022, 10:05 a.m. UTC 
A simple helper to retrieve the length of the current insn.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/translate.h     | 5 +++++
 target/arm/translate-vfp.c | 2 +-
 target/arm/translate.c     | 5 ++---
 3 files changed, 8 insertions(+), 4 deletions(-)

Comments

Philippe Mathieu-Daudé Sept. 6, 2022, 12:45 p.m. UTC | #1 
On 6/9/22 12:05, Richard Henderson wrote:
> A simple helper to retrieve the length of the current insn.
> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   target/arm/translate.h     | 5 +++++
>   target/arm/translate-vfp.c | 2 +-
>   target/arm/translate.c     | 5 ++---
>   3 files changed, 8 insertions(+), 4 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
diff mbox series

Patch

diff --git a/target/arm/translate.h b/target/arm/translate.h
index af5d4a7086..90bf7c57fc 100644
--- a/target/arm/translate.h
+++ b/target/arm/translate.h
@@ -226,6 +226,11 @@  static inline void disas_set_insn_syndrome(DisasContext *s, uint32_t syn)
     s->insn_start = NULL;
 }
 
+static inline int curr_insn_len(DisasContext *s)
+{
+    return s->base.pc_next - s->pc_curr;
+}
+
 /* is_jmp field values */
 #define DISAS_JUMP      DISAS_TARGET_0 /* only pc was modified dynamically */
 /* CPU state was modified dynamically; exit to main loop for interrupts. */
diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c
index bd5ae27d09..94cc1e4b77 100644
--- a/target/arm/translate-vfp.c
+++ b/target/arm/translate-vfp.c
@@ -242,7 +242,7 @@  static bool vfp_access_check_a(DisasContext *s, bool ignore_vfp_enabled)
     if (s->sme_trap_nonstreaming) {
         gen_exception_insn(s, s->pc_curr, EXCP_UDEF,
                            syn_smetrap(SME_ET_Streaming,
-                                       s->base.pc_next - s->pc_curr == 2));
+                                       curr_insn_len(s) == 2));
         return false;
     }
 
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 9474e4b44b..638a051281 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -6660,7 +6660,7 @@  static ISSInfo make_issinfo(DisasContext *s, int rd, bool p, bool w)
     /* ISS not valid if writeback */
     if (p && !w) {
         ret = rd;
-        if (s->base.pc_next - s->pc_curr == 2) {
+        if (curr_insn_len(s) == 2) {
             ret |= ISSIs16Bit;
         }
     } else {
@@ -9825,8 +9825,7 @@  static void arm_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
             /* nothing more to generate */
             break;
         case DISAS_WFI:
-            gen_helper_wfi(cpu_env,
-                           tcg_constant_i32(dc->base.pc_next - dc->pc_curr));
+            gen_helper_wfi(cpu_env, tcg_constant_i32(curr_insn_len(dc)));
             /*
              * The helper doesn't necessarily throw an exception, but we
              * must go back to the main loop to check for interrupts anyway.