commit 5bde14078d181439a1170094d7774372242ab739
author Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Wed Sep 17 12:05:19 2014 +0400
committer Paolo Bonzini <pbonzini@redhat.com> Thu Sep 18 17:06:12 2014 +0200
tree 99535a4249042c14262d08f32569c424a7fd7621
parent 7dbb4c49bfa60b92251a97ddda2c3cdace6b73e4

target-i386: update fp status fix

This patch introduces cpu_set_fpuc() function, which changes fpuc field
of the CPU state and calls update_fp_status() function.
These calls update status of softfloat library and prevent bugs caused
by non-coherent rounding settings of the FPU and softfloat.

v2 changes:
 * Added missed calls and intoduced setter function (as suggested by TeLeMan)

Reviewed-by: TeLeMan <geleman@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>

target-i386/gdbstub.c

diff --git a/target-i386/gdbstub.c b/target-i386/gdbstub.c
index 19fe9ad..ff99cfb 100644
--- a/target-i386/gdbstub.c
+++ b/target-i386/gdbstub.c
@@ -203,7 +203,7 @@
             return x86_cpu_gdb_load_seg(cpu, R_GS, mem_buf);
 
         case IDX_FP_REGS + 8:
-            env->fpuc = ldl_p(mem_buf);
+            cpu_set_fpuc(env, ldl_p(mem_buf));
             return 4;
         case IDX_FP_REGS + 9:
             tmp = ldl_p(mem_buf);