diff options
Diffstat (limited to 'libguile/vm-engine.c')
-rw-r--r-- | libguile/vm-engine.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/libguile/vm-engine.c b/libguile/vm-engine.c index 7305beebb..4b55906bc 100644 --- a/libguile/vm-engine.c +++ b/libguile/vm-engine.c @@ -324,6 +324,7 @@ VM_NAME (scm_thread *thread) /* Boot closure in r0, empty frame in r1/r2, proc in r3, values from r4. */ uint32_t nvals = FRAME_LOCALS_COUNT_FROM (4); + union scm_vm_stack_element *fp; SCM ret; if (nvals == 1) @@ -338,9 +339,10 @@ VM_NAME (scm_thread *thread) SCM_SET_CELL_OBJECT (ret, n+1, FP_REF (4 + n)); } - VP->ip = SCM_FRAME_RETURN_ADDRESS (VP->fp); - VP->sp = SCM_FRAME_PREVIOUS_SP (VP->fp); - VP->fp = SCM_FRAME_DYNAMIC_LINK (VP->fp); + fp = VP->fp; + VP->fp = SCM_FRAME_DYNAMIC_LINK (fp); + VP->ip = SCM_FRAME_RETURN_ADDRESS (fp); + VP->sp = SCM_FRAME_PREVIOUS_SP (fp); return ret; } @@ -361,7 +363,7 @@ VM_NAME (scm_thread *thread) VM_DEFINE_OP (1, call, "call", OP2 (X8_F24, X8_C24)) { uint32_t proc, nlocals; - union scm_vm_stack_element *old_fp; + union scm_vm_stack_element *old_fp, *new_fp; UNPACK_24 (op, proc); UNPACK_24 (ip[1], nlocals); @@ -369,9 +371,10 @@ VM_NAME (scm_thread *thread) PUSH_CONTINUATION_HOOK (); old_fp = VP->fp; - VP->fp = SCM_FRAME_SLOT (old_fp, proc - 1); - SCM_FRAME_SET_DYNAMIC_LINK (VP->fp, old_fp); - SCM_FRAME_SET_RETURN_ADDRESS (VP->fp, ip + 2); + new_fp = SCM_FRAME_SLOT (old_fp, proc - 1); + SCM_FRAME_SET_DYNAMIC_LINK (new_fp, old_fp); + SCM_FRAME_SET_RETURN_ADDRESS (new_fp, ip + 2); + VP->fp = new_fp; RESET_FRAME (nlocals); @@ -403,7 +406,7 @@ VM_NAME (scm_thread *thread) { uint32_t proc, nlocals; int32_t label; - union scm_vm_stack_element *old_fp; + union scm_vm_stack_element *old_fp, *new_fp; UNPACK_24 (op, proc); UNPACK_24 (ip[1], nlocals); @@ -412,9 +415,10 @@ VM_NAME (scm_thread *thread) PUSH_CONTINUATION_HOOK (); old_fp = VP->fp; - VP->fp = SCM_FRAME_SLOT (old_fp, proc - 1); - SCM_FRAME_SET_DYNAMIC_LINK (VP->fp, old_fp); - SCM_FRAME_SET_RETURN_ADDRESS (VP->fp, ip + 3); + new_fp = SCM_FRAME_SLOT (old_fp, proc - 1); + SCM_FRAME_SET_DYNAMIC_LINK (new_fp, old_fp); + SCM_FRAME_SET_RETURN_ADDRESS (new_fp, ip + 3); + VP->fp = new_fp; RESET_FRAME (nlocals); @@ -2387,9 +2391,11 @@ VM_NAME (scm_thread *thread) */ VM_DEFINE_OP (184, return_from_interrupt, "return-from-interrupt", OP1 (X32)) { - VP->sp = sp = SCM_FRAME_PREVIOUS_SP (VP->fp); - ip = SCM_FRAME_RETURN_ADDRESS (VP->fp); - VP->fp = SCM_FRAME_DYNAMIC_LINK (VP->fp); + union scm_vm_stack_element *fp = VP->fp; + + ip = SCM_FRAME_RETURN_ADDRESS (fp); + VP->fp = SCM_FRAME_DYNAMIC_LINK (fp); + VP->sp = sp = SCM_FRAME_PREVIOUS_SP (fp); NEXT (0); } |