diff mbox

[v2,5/5] target-tricore: Add updfl instruction

Message ID 20161107144445.14069-6-kbastian@mail.uni-paderborn.de (mailing list archive)
State New, archived
Headers show

Commit Message

Bastian Koppelmann Nov. 7, 2016, 2:44 p.m. UTC 
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
---
 target-tricore/fpu_helper.c | 12 ++++++++++++
 target-tricore/helper.h     |  1 +
 target-tricore/translate.c  |  3 +++
 3 files changed, 16 insertions(+)

Comments

Richard Henderson Nov. 8, 2016, 11:49 a.m. UTC | #1 
On 11/07/2016 03:44 PM, Bastian Koppelmann wrote:
> +void helper_updfl(CPUTriCoreState *env, uint32_t arg)
> +{
> +    env->FPU_FS =  extract32(arg, 7, 1) & extract32(arg, 15, 1);
> +    env->FPU_FI = (extract32(arg, 6, 1) & extract32(arg, 14, 1)) << 31;
> +    env->FPU_FV = (extract32(arg, 5, 1) & extract32(arg, 13, 1)) << 31;
> +    env->FPU_FZ = (extract32(arg, 4, 1) & extract32(arg, 12, 1)) << 31;
> +    env->FPU_FU = (extract32(arg, 3, 1) & extract32(arg, 11, 1)) << 31;
> +    /* clear FX and RM */
> +    env->PSW &= ~(extract32(arg, 10, 1) << 26);
> +    env->PSW |= (extract32(arg, 2, 1) & extract32(arg, 10, 1)) << 26;
> +}

Need a call to fpu_set_state here, to update the rounding mode in env->fp_status.


r~
diff mbox

Patch

diff --git a/target-tricore/fpu_helper.c b/target-tricore/fpu_helper.c
index d530a0b..89de0ea 100644
--- a/target-tricore/fpu_helper.c
+++ b/target-tricore/fpu_helper.c
@@ -349,3 +349,15 @@  uint32_t helper_ftouz(CPUTriCoreState *env, uint32_t arg)
     }
     return result;
 }
+
+void helper_updfl(CPUTriCoreState *env, uint32_t arg)
+{
+    env->FPU_FS =  extract32(arg, 7, 1) & extract32(arg, 15, 1);
+    env->FPU_FI = (extract32(arg, 6, 1) & extract32(arg, 14, 1)) << 31;
+    env->FPU_FV = (extract32(arg, 5, 1) & extract32(arg, 13, 1)) << 31;
+    env->FPU_FZ = (extract32(arg, 4, 1) & extract32(arg, 12, 1)) << 31;
+    env->FPU_FU = (extract32(arg, 3, 1) & extract32(arg, 11, 1)) << 31;
+    /* clear FX and RM */
+    env->PSW &= ~(extract32(arg, 10, 1) << 26);
+    env->PSW |= (extract32(arg, 2, 1) & extract32(arg, 10, 1)) << 26;
+}
diff --git a/target-tricore/helper.h b/target-tricore/helper.h
index c897a44..012ac96 100644
--- a/target-tricore/helper.h
+++ b/target-tricore/helper.h
@@ -115,6 +115,7 @@  DEF_HELPER_3(fcmp, i32, env, i32, i32)
 DEF_HELPER_2(ftoi, i32, env, i32)
 DEF_HELPER_2(itof, i32, env, i32)
 DEF_HELPER_2(ftouz, i32, env, i32)
+DEF_HELPER_2(updfl, void, env, i32)
 /* dvinit */
 DEF_HELPER_3(dvinit_b_13, i64, env, i32, i32)
 DEF_HELPER_3(dvinit_b_131, i64, env, i32, i32)
diff --git a/target-tricore/translate.c b/target-tricore/translate.c
index be9b6b4..a3f980a 100644
--- a/target-tricore/translate.c
+++ b/target-tricore/translate.c
@@ -6848,6 +6848,9 @@  static void decode_rr1_mul(CPUTriCoreState *env, DisasContext *ctx)
         GEN_HELPER_UU(mulr_h, cpu_gpr_d[r3], cpu_gpr_d[r1], cpu_gpr_d[r2], n);
         gen_calc_usb_mulr_h(cpu_gpr_d[r3]);
         break;
+    case OPC2_32_RR_UPDFL:
+        gen_helper_updfl(cpu_env, cpu_gpr_d[r1]);
+        break;
     default:
         generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
     }