Add support for XMM registers in GDB for x86 processors that support

SSE (or its successors).

Reviewed by: marcel, davidxu
MFC After: 2 weeks

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/libthread_db/arch/i386/libpthread_md.c b/lib/libthread_db/arch/i386/libpthread_md.c
index 86bb88d..dc14e60 100644
--- a/lib/libthread_db/arch/i386/libpthread_md.c
+++ b/lib/libthread_db/arch/i386/libpthread_md.c
@@ -81,6 +81,20 @@ pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
 }
 
 void
+pt_fxsave_to_ucontext(const char* r, ucontext_t *uc)
+{
+	if (has_xmm_regs)
+		memcpy(&uc->uc_mcontext.mc_fpstate, r, sizeof(struct savexmm));
+}
+
+void
+pt_ucontext_to_fxsave(const ucontext_t *uc, char *r)
+{
+	if (has_xmm_regs)
+		memcpy(r, &uc->uc_mcontext.mc_fpstate, sizeof(struct savexmm));
+}
+
+void
 pt_md_init(void)
 {
 	ucontext_t uc;