diff options
Diffstat (limited to 'libguile/vm-engine.c')
-rw-r--r-- | libguile/vm-engine.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/libguile/vm-engine.c b/libguile/vm-engine.c index fd681480c..b6b312cac 100644 --- a/libguile/vm-engine.c +++ b/libguile/vm-engine.c @@ -1431,10 +1431,15 @@ VM_NAME (scm_i_thread *thread, struct scm_vm *vp, NEXT (1); } - VM_DEFINE_OP (47, unused_47, NULL, NOP) + VM_DEFINE_OP (47, tail_pointer_ref_immediate, "tail-pointer-ref/immediate", OP1 (X8_S8_S8_C8) | OP_DST) { - vm_error_bad_instruction (op); - abort (); + scm_t_uint8 dst, obj, idx; + + UNPACK_8_8_8 (op, dst, obj, idx); + + SP_SET_PTR (dst, ((scm_t_bits *) SCM2PTR (SP_REF (obj))) + idx); + + NEXT (1); } @@ -2206,8 +2211,24 @@ VM_NAME (scm_i_thread *thread, struct scm_vm *vp, - VM_DEFINE_OP (81, unused_81, NULL, NOP) - VM_DEFINE_OP (82, unused_82, NULL, NOP) + VM_DEFINE_OP (81, tag_char, "tag-char", OP1 (X8_S12_S12) | OP_DST) + { + scm_t_uint16 dst, src; + UNPACK_12_12 (op, dst, src); + SP_SET (dst, + SCM_MAKE_ITAG8 ((scm_t_bits) (scm_t_wchar) SP_REF_U64 (src), + scm_tc8_char)); + NEXT (1); + } + + VM_DEFINE_OP (82, untag_char, "untag-char", OP1 (X8_S12_S12) | OP_DST) + { + scm_t_uint16 dst, src; + UNPACK_12_12 (op, dst, src); + SP_SET_U64 (dst, SCM_CHAR (SP_REF (src))); + NEXT (1); + } + VM_DEFINE_OP (83, unused_83, NULL, NOP) VM_DEFINE_OP (84, unused_84, NULL, NOP) VM_DEFINE_OP (85, unused_85, NULL, NOP) |