Fixes: corrects clobbering of registers appearing after k_gs_base
Buglink: https://bugs.launchpad.net/qemu/+bug/1857640
Signed-off-by: Marek Dolata <mkdol...@us.ibm.com>
---
target/i386/gdbstub.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/i386/gdbstub.c b/target/i386/gdbstub.c
index aef25b70f1..7228d20674 100644
--- a/target/i386/gdbstub.c
+++ b/target/i386/gdbstub.c
@@ -350,14 +350,16 @@ int x86_cpu_gdb_write_register(CPUState *cs, uint8_t
*mem_buf, int n)
env->segs[R_GS].base = ldl_p(mem_buf);
return 4;
-#ifdef TARGET_X86_64
case IDX_SEG_REGS + 8:
+#ifdef TARGET_X86_64
if (env->hflags & HF_CS64_MASK) {
env->kernelgsbase = ldq_p(mem_buf);
return 8;
}
env->kernelgsbase = ldl_p(mem_buf);
return 4;
+#else
+ return 4;
#endif
case IDX_FP_REGS + 8:
--
2.21.0
