Get Z80 core working for simple programs

1 files changed, 4 insertions, 0 deletions

diff --git a/gen_x86.c b/gen_x86.c
index 2deb864..97573b8 100644
--- a/gen_x86.c
+++ b/gen_x86.c
@@ -1490,6 +1490,10 @@ uint8_t * jmp(uint8_t * out, uint8_t * dest)
 
 uint8_t * jmp_r(uint8_t * out, uint8_t dst)
 {
+	if (dst >= R8) {
+		dst -= R8 - X86_R8;
+		*(out++) = PRE_REX | REX_RM_FIELD;
+	}
 	*(out++) = OP_SINGLE_EA;
 	*(out++) = MODE_REG_DIRECT | dst | (OP_EX_JMP_EA << 3);
 	return out;