[PATCH v4 5/9] target/arm: Change gen_exception_internal to work on displacements

[Richard Henderson]

In preparation for TARGET_TB_PCREL, reduce reliance on absolute values.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/translate-a64.c |  6 +++---
 target/arm/translate.c     | 10 +++++-----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 17ea8b5650..9bb744fad3 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -340,9 +340,9 @@ static void gen_exception_internal(int excp)
     gen_helper_exception_internal(cpu_env, tcg_constant_i32(excp));
 }
 
-static void gen_exception_internal_insn(DisasContext *s, uint64_t pc, int excp)
+static void gen_exception_internal_insn(DisasContext *s, int pc_diff, int excp)
 {
-    gen_a64_update_pc(s, pc - s->pc_curr);
+    gen_a64_update_pc(s, pc_diff);
     gen_exception_internal(excp);
     s->base.is_jmp = DISAS_NORETURN;
 }
@@ -2229,7 +2229,7 @@ static void disas_exc(DisasContext *s, uint32_t insn)
                 break;
             }
 #endif
-            gen_exception_internal_insn(s, s->pc_curr, EXCP_SEMIHOST);
+            gen_exception_internal_insn(s, 0, EXCP_SEMIHOST);
         } else {
             unallocated_encoding(s);
         }
diff --git a/target/arm/translate.c b/target/arm/translate.c
index d441e31d3a..63a41ed438 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -1078,10 +1078,10 @@ static inline void gen_smc(DisasContext *s)
     s->base.is_jmp = DISAS_SMC;
 }
 
-static void gen_exception_internal_insn(DisasContext *s, uint32_t pc, int excp)
+static void gen_exception_internal_insn(DisasContext *s, int pc_diff, int excp)
 {
     gen_set_condexec(s);
-    gen_update_pc(s, pc - s->pc_curr);
+    gen_update_pc(s, pc_diff);
     gen_exception_internal(excp);
     s->base.is_jmp = DISAS_NORETURN;
 }
@@ -1175,7 +1175,7 @@ static inline void gen_hlt(DisasContext *s, int imm)
         s->current_el != 0 &&
 #endif
         (imm == (s->thumb ? 0x3c : 0xf000))) {
-        gen_exception_internal_insn(s, s->pc_curr, EXCP_SEMIHOST);
+        gen_exception_internal_insn(s, 0, EXCP_SEMIHOST);
         return;
     }
 
@@ -6565,7 +6565,7 @@ static bool trans_BKPT(DisasContext *s, arg_BKPT *a)
         !IS_USER(s) &&
 #endif
         (a->imm == 0xab)) {
-        gen_exception_internal_insn(s, s->pc_curr, EXCP_SEMIHOST);
+        gen_exception_internal_insn(s, 0, EXCP_SEMIHOST);
     } else {
         gen_exception_bkpt_insn(s, syn_aa32_bkpt(a->imm, false));
     }
@@ -8773,7 +8773,7 @@ static bool trans_SVC(DisasContext *s, arg_SVC *a)
         !IS_USER(s) &&
 #endif
         (a->imm == semihost_imm)) {
-        gen_exception_internal_insn(s, s->pc_curr, EXCP_SEMIHOST);
+        gen_exception_internal_insn(s, 0, EXCP_SEMIHOST);
     } else {
         gen_update_pc(s, curr_insn_len(s));
         s->svc_imm = a->imm;
-- 
2.34.1