[amd64] Save missing register

diff --git a/mono/utils/mach-support-amd64.c b/mono/utils/mach-support-amd64.c
index 733f94c343cf1c93b90f3e769fbc0f12c0610e40..ceef5f25e459e0c94b91dee4a56c5084b581e4a7 100644 (file)
--- a/mono/utils/mach-support-amd64.c
+++ b/mono/utils/mach-support-amd64.c
@@ -89,6 +89,7 @@ mono_mach_arch_thread_states_to_mono_context (thread_state_t state, thread_state
        context->gregs [AMD64_RCX] = arch_state->__rcx;
        context->gregs [AMD64_RDX] = arch_state->__rdx;
        context->gregs [AMD64_RDI] = arch_state->__rdi;
+       context->gregs [AMD64_RSI] = arch_state->__rsi;
        context->gregs [AMD64_RBP] = arch_state->__rbp;
        context->gregs [AMD64_RSP] = arch_state->__rsp;
        context->gregs [AMD64_R8] = arch_state->__r8;