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push new frame on stack before procedure & args

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* libguile/_scm.h (SCM_OBJCODE_MINOR_VERSION): Bump

* libguile/vm-engine.c (vm_engine): Push a frame corresponding to the
  mv-call.

* libguile/vm-i-system.c: Renumber ops.
  (new-frame): New op, pushes a frame.
  (call, mv-call): No need to shuffle args, though we do need to pop the
  frame in the non-vm call case.
  (goto/args): Inconsequential tweaks.
  (call/cc): Push a frame if needed.

* module/language/tree-il/compile-glil.scm (flatten): Emit `new-frame'
  as appropriate.

* test-suite/tests/tree-il.test: Fix to expect new-frame.
This commit is contained in:
Andy Wingo 2009-08-15 14:15:56 +02:00
parent 03e6c16596
commit b7946e9ec6
5 changed files with 78 additions and 57 deletions
Download patch file Download diff file Expand all files Collapse all files

2
libguile/_scm.h
View file

@ -172,7 +172,7 @@
/* Major and minor versions must be single characters. */
#define SCM_OBJCODE_MAJOR_VERSION 0
#define SCM_OBJCODE_MINOR_VERSION C
#define SCM_OBJCODE_MINOR_VERSION D
#define SCM_OBJCODE_MAJOR_VERSION_STRING \
SCM_CPP_STRINGIFY(SCM_OBJCODE_MAJOR_VERSION)
#define SCM_OBJCODE_MINOR_VERSION_STRING \

5
libguile/vm-engine.c
View file

@ -114,7 +114,10 @@ VM_NAME (struct scm_vm *vp, SCM program, SCM *argv, int nargs)
PUSH (program);
fp = sp + 1;
INIT_FRAME ();
/* Initial arguments */
/* MV-call frame, function & arguments */
PUSH ((SCM)fp); /* dynamic link */
PUSH (0); /* ra */
PUSH (0); /* mvra */
PUSH (prog);
if (SCM_UNLIKELY (sp + nargs >= stack_limit))
goto vm_error_too_many_args;

112
libguile/vm-i-system.c
View file

@ -475,7 +475,15 @@ VM_DEFINE_INSTRUCTION (37, br_if_not_null, "br-if-not-null", 2, 0, 0)
* Subprogram call
*/
VM_DEFINE_INSTRUCTION (38, call, "call", 1, -1, 1)
VM_DEFINE_INSTRUCTION (38, new_frame, "new-frame", 0, 0, 3)
{
PUSH ((SCM)fp); /* dynamic link */
PUSH (0); /* mvra */
PUSH (0); /* ra */
NEXT;
}
VM_DEFINE_INSTRUCTION (39, call, "call", 1, -1, 1)
{
SCM x;
nargs = FETCH ();
@ -491,17 +499,12 @@ VM_DEFINE_INSTRUCTION (38, call, "call", 1, -1, 1)
*/
if (SCM_PROGRAM_P (x))
{
int i;
/* shuffle up */
sp += 3;
CHECK_OVERFLOW ();
for (i = 0; i <= nargs; i++)
sp[-i] = sp[-(i + 3)];
program = x;
CACHE_PROGRAM ();
INIT_ARGS ();
SCM_FRAME_SET_DYNAMIC_LINK (sp - bp->nargs + 1, fp);
fp = sp - bp->nargs + 1;
ASSERT (SCM_FRAME_RETURN_ADDRESS (fp) == 0);
ASSERT (SCM_FRAME_MV_RETURN_ADDRESS (fp) == 0);
SCM_FRAME_SET_RETURN_ADDRESS (fp, ip);
SCM_FRAME_SET_MV_RETURN_ADDRESS (fp, 0);
INIT_FRAME ();
@ -514,14 +517,17 @@ VM_DEFINE_INSTRUCTION (38, call, "call", 1, -1, 1)
*/
if (!SCM_FALSEP (scm_procedure_p (x)))
{
/* At this point, the stack contains the procedure and each one of its
arguments. */
SCM args;
/* At this point, the stack contains the frame, the procedure and each one
of its arguments. */
POP_LIST (nargs);
POP (args);
DROP (); /* drop the procedure */
DROP_FRAME ();
SYNC_REGISTER ();
/* keep args on stack so they are marked */
sp[-1] = scm_apply (x, sp[0], SCM_EOL);
PUSH (scm_apply (x, args, SCM_EOL));
NULLSTACK_FOR_NONLOCAL_EXIT ();
DROP ();
if (SCM_UNLIKELY (SCM_VALUESP (*sp)))
{
/* truncate values */
@ -539,7 +545,7 @@ VM_DEFINE_INSTRUCTION (38, call, "call", 1, -1, 1)
goto vm_error_wrong_type_apply;
}
VM_DEFINE_INSTRUCTION (39, goto_args, "goto/args", 1, -1, 1)
VM_DEFINE_INSTRUCTION (40, goto_args, "goto/args", 1, -1, 1)
{
register SCM x;
nargs = FETCH ();
@ -591,11 +597,14 @@ VM_DEFINE_INSTRUCTION (39, goto_args, "goto/args", 1, -1, 1)
*/
if (!SCM_FALSEP (scm_procedure_p (x)))
{
SCM args;
POP_LIST (nargs);
POP (args);
SYNC_REGISTER ();
sp[-1] = scm_apply (x, sp[0], SCM_EOL);
*sp = scm_apply (x, args, SCM_EOL);
NULLSTACK_FOR_NONLOCAL_EXIT ();
DROP ();
if (SCM_UNLIKELY (SCM_VALUESP (*sp)))
{
/* multiple values returned to continuation */
@ -606,7 +615,8 @@ VM_DEFINE_INSTRUCTION (39, goto_args, "goto/args", 1, -1, 1)
PUSH_LIST (values, SCM_NULLP);
goto vm_return_values;
}
goto vm_return;
else
goto vm_return;
}
program = x;
@ -614,7 +624,7 @@ VM_DEFINE_INSTRUCTION (39, goto_args, "goto/args", 1, -1, 1)
goto vm_error_wrong_type_apply;
}
VM_DEFINE_INSTRUCTION (40, goto_nargs, "goto/nargs", 0, 0, 1)
VM_DEFINE_INSTRUCTION (41, goto_nargs, "goto/nargs", 0, 0, 1)
{
SCM x;
POP (x);
@ -623,7 +633,7 @@ VM_DEFINE_INSTRUCTION (40, goto_nargs, "goto/nargs", 0, 0, 1)
goto vm_goto_args;
}
VM_DEFINE_INSTRUCTION (41, call_nargs, "call/nargs", 0, 0, 1)
VM_DEFINE_INSTRUCTION (42, call_nargs, "call/nargs", 0, 0, 1)
{
SCM x;
POP (x);
@ -632,7 +642,7 @@ VM_DEFINE_INSTRUCTION (41, call_nargs, "call/nargs", 0, 0, 1)
goto vm_call;
}
VM_DEFINE_INSTRUCTION (42, mv_call, "mv-call", 3, -1, 1)
VM_DEFINE_INSTRUCTION (43, mv_call, "mv-call", 3, -1, 1)
{
SCM x;
scm_t_int16 offset;
@ -649,17 +659,12 @@ VM_DEFINE_INSTRUCTION (42, mv_call, "mv-call", 3, -1, 1)
*/
if (SCM_PROGRAM_P (x))
{
int i;
/* shuffle up */
sp += 3;
CHECK_OVERFLOW ();
for (i = 0; i <= nargs; i++)
sp[-i] = sp[-(i + 3)];
program = x;
CACHE_PROGRAM ();
INIT_ARGS ();
SCM_FRAME_SET_DYNAMIC_LINK (sp - bp->nargs + 1, fp);
fp = sp - bp->nargs + 1;
ASSERT (SCM_FRAME_RETURN_ADDRESS (fp) == 0);
ASSERT (SCM_FRAME_MV_RETURN_ADDRESS (fp) == 0);
SCM_FRAME_SET_RETURN_ADDRESS (fp, ip);
SCM_FRAME_SET_MV_RETURN_ADDRESS (fp, mvra);
INIT_FRAME ();
@ -672,13 +677,17 @@ VM_DEFINE_INSTRUCTION (42, mv_call, "mv-call", 3, -1, 1)
*/
if (!SCM_FALSEP (scm_procedure_p (x)))
{
SCM args;
/* At this point, the stack contains the procedure and each one of its
arguments. */
POP_LIST (nargs);
POP (args);
DROP (); /* drop the procedure */
DROP_FRAME ();
SYNC_REGISTER ();
sp[-1] = scm_apply (x, sp[0], SCM_EOL);
PUSH (scm_apply (x, args, SCM_EOL));
NULLSTACK_FOR_NONLOCAL_EXIT ();
DROP ();
if (SCM_VALUESP (*sp))
{
SCM values, len;
@ -696,7 +705,7 @@ VM_DEFINE_INSTRUCTION (42, mv_call, "mv-call", 3, -1, 1)
goto vm_error_wrong_type_apply;
}
VM_DEFINE_INSTRUCTION (43, apply, "apply", 1, -1, 1)
VM_DEFINE_INSTRUCTION (44, apply, "apply", 1, -1, 1)
{
int len;
SCM ls;
@ -715,7 +724,7 @@ VM_DEFINE_INSTRUCTION (43, apply, "apply", 1, -1, 1)
goto vm_call;
}
VM_DEFINE_INSTRUCTION (44, goto_apply, "goto/apply", 1, -1, 1)
VM_DEFINE_INSTRUCTION (45, goto_apply, "goto/apply", 1, -1, 1)
{
int len;
SCM ls;
@ -734,7 +743,7 @@ VM_DEFINE_INSTRUCTION (44, goto_apply, "goto/apply", 1, -1, 1)
goto vm_goto_args;
}
VM_DEFINE_INSTRUCTION (45, call_cc, "call/cc", 0, 1, 1)
VM_DEFINE_INSTRUCTION (46, call_cc, "call/cc", 0, 1, 1)
{
int first;
SCM proc, cont;
@ -743,6 +752,9 @@ VM_DEFINE_INSTRUCTION (45, call_cc, "call/cc", 0, 1, 1)
cont = scm_make_continuation (&first);
if (first)
{
PUSH ((SCM)fp); /* dynamic link */
PUSH (0); /* mvra */
PUSH (0); /* ra */
PUSH (proc);
PUSH (cont);
nargs = 1;
@ -768,7 +780,7 @@ VM_DEFINE_INSTRUCTION (45, call_cc, "call/cc", 0, 1, 1)
}
}
VM_DEFINE_INSTRUCTION (46, goto_cc, "goto/cc", 0, 1, 1)
VM_DEFINE_INSTRUCTION (47, goto_cc, "goto/cc", 0, 1, 1)
{
int first;
SCM proc, cont;
@ -800,7 +812,7 @@ VM_DEFINE_INSTRUCTION (46, goto_cc, "goto/cc", 0, 1, 1)
}
}
VM_DEFINE_INSTRUCTION (47, return, "return", 0, 1, 1)
VM_DEFINE_INSTRUCTION (48, return, "return", 0, 1, 1)
{
vm_return:
EXIT_HOOK ();
@ -837,7 +849,7 @@ VM_DEFINE_INSTRUCTION (47, return, "return", 0, 1, 1)
NEXT;
}
VM_DEFINE_INSTRUCTION (48, return_values, "return/values", 1, -1, -1)
VM_DEFINE_INSTRUCTION (49, return_values, "return/values", 1, -1, -1)
{
/* nvalues declared at top level, because for some reason gcc seems to think
that perhaps it might be used without declaration. Fooey to that, I say. */
@ -894,7 +906,7 @@ VM_DEFINE_INSTRUCTION (48, return_values, "return/values", 1, -1, -1)
NEXT;
}
VM_DEFINE_INSTRUCTION (49, return_values_star, "return/values*", 1, -1, -1)
VM_DEFINE_INSTRUCTION (50, return_values_star, "return/values*", 1, -1, -1)
{
SCM l;
@ -917,7 +929,7 @@ VM_DEFINE_INSTRUCTION (49, return_values_star, "return/values*", 1, -1, -1)
goto vm_return_values;
}
VM_DEFINE_INSTRUCTION (50, truncate_values, "truncate-values", 2, -1, -1)
VM_DEFINE_INSTRUCTION (51, truncate_values, "truncate-values", 2, -1, -1)
{
SCM x;
int nbinds, rest;
@ -940,7 +952,7 @@ VM_DEFINE_INSTRUCTION (50, truncate_values, "truncate-values", 2, -1, -1)
NEXT;
}
VM_DEFINE_INSTRUCTION (51, box, "box", 1, 1, 0)
VM_DEFINE_INSTRUCTION (52, box, "box", 1, 1, 0)
{
SCM val;
POP (val);
@ -954,7 +966,7 @@ VM_DEFINE_INSTRUCTION (51, box, "box", 1, 1, 0)
(set! a (lambda () (b ...)))
...)
*/
VM_DEFINE_INSTRUCTION (52, empty_box, "empty-box", 1, 0, 0)
VM_DEFINE_INSTRUCTION (53, empty_box, "empty-box", 1, 0, 0)
{
SYNC_BEFORE_GC ();
LOCAL_SET (FETCH (),
@ -962,7 +974,7 @@ VM_DEFINE_INSTRUCTION (52, empty_box, "empty-box", 1, 0, 0)
NEXT;
}
VM_DEFINE_INSTRUCTION (53, local_boxed_ref, "local-boxed-ref", 1, 0, 1)
VM_DEFINE_INSTRUCTION (54, local_boxed_ref, "local-boxed-ref", 1, 0, 1)
{
SCM v = LOCAL_REF (FETCH ());
ASSERT_BOUND_VARIABLE (v);
@ -970,7 +982,7 @@ VM_DEFINE_INSTRUCTION (53, local_boxed_ref, "local-boxed-ref", 1, 0, 1)
NEXT;
}
VM_DEFINE_INSTRUCTION (54, local_boxed_set, "local-boxed-set", 1, 1, 0)
VM_DEFINE_INSTRUCTION (55, local_boxed_set, "local-boxed-set", 1, 1, 0)
{
SCM v, val;
v = LOCAL_REF (FETCH ());
@ -980,7 +992,7 @@ VM_DEFINE_INSTRUCTION (54, local_boxed_set, "local-boxed-set", 1, 1, 0)
NEXT;
}
VM_DEFINE_INSTRUCTION (55, free_ref, "free-ref", 1, 0, 1)
VM_DEFINE_INSTRUCTION (56, free_ref, "free-ref", 1, 0, 1)
{
scm_t_uint8 idx = FETCH ();
@ -991,7 +1003,7 @@ VM_DEFINE_INSTRUCTION (55, free_ref, "free-ref", 1, 0, 1)
/* no free-set -- if a var is assigned, it should be in a box */
VM_DEFINE_INSTRUCTION (56, free_boxed_ref, "free-boxed-ref", 1, 0, 1)
VM_DEFINE_INSTRUCTION (57, free_boxed_ref, "free-boxed-ref", 1, 0, 1)
{
SCM v;
scm_t_uint8 idx = FETCH ();
@ -1002,7 +1014,7 @@ VM_DEFINE_INSTRUCTION (56, free_boxed_ref, "free-boxed-ref", 1, 0, 1)
NEXT;
}
VM_DEFINE_INSTRUCTION (57, free_boxed_set, "free-boxed-set", 1, 1, 0)
VM_DEFINE_INSTRUCTION (58, free_boxed_set, "free-boxed-set", 1, 1, 0)
{
SCM v, val;
scm_t_uint8 idx = FETCH ();
@ -1014,7 +1026,7 @@ VM_DEFINE_INSTRUCTION (57, free_boxed_set, "free-boxed-set", 1, 1, 0)
NEXT;
}
VM_DEFINE_INSTRUCTION (58, make_closure, "make-closure", 0, 2, 1)
VM_DEFINE_INSTRUCTION (59, make_closure, "make-closure", 0, 2, 1)
{
SCM vect;
POP (vect);
@ -1025,7 +1037,7 @@ VM_DEFINE_INSTRUCTION (58, make_closure, "make-closure", 0, 2, 1)
NEXT;
}
VM_DEFINE_INSTRUCTION (59, make_variable, "make-variable", 0, 0, 1)
VM_DEFINE_INSTRUCTION (60, make_variable, "make-variable", 0, 0, 1)
{
SYNC_BEFORE_GC ();
/* fixme underflow */
@ -1033,7 +1045,7 @@ VM_DEFINE_INSTRUCTION (59, make_variable, "make-variable", 0, 0, 1)
NEXT;
}
VM_DEFINE_INSTRUCTION (60, fix_closure, "fix-closure", 2, 0, 1)
VM_DEFINE_INSTRUCTION (61, fix_closure, "fix-closure", 2, 0, 1)
{
SCM x, vect;
unsigned int i = FETCH ();
@ -1047,7 +1059,7 @@ VM_DEFINE_INSTRUCTION (60, fix_closure, "fix-closure", 2, 0, 1)
NEXT;
}
VM_DEFINE_INSTRUCTION (61, define, "define", 0, 0, 2)
VM_DEFINE_INSTRUCTION (62, define, "define", 0, 0, 2)
{
SCM sym, val;
POP (sym);
@ -1059,7 +1071,7 @@ VM_DEFINE_INSTRUCTION (61, define, "define", 0, 0, 2)
NEXT;
}
VM_DEFINE_INSTRUCTION (62, make_keyword, "make-keyword", 0, 1, 1)
VM_DEFINE_INSTRUCTION (63, make_keyword, "make-keyword", 0, 1, 1)
{
CHECK_UNDERFLOW ();
SYNC_REGISTER ();
@ -1067,7 +1079,7 @@ VM_DEFINE_INSTRUCTION (62, make_keyword, "make-keyword", 0, 1, 1)
NEXT;
}
VM_DEFINE_INSTRUCTION (63, make_symbol, "make-symbol", 0, 1, 1)
VM_DEFINE_INSTRUCTION (64, make_symbol, "make-symbol", 0, 1, 1)
{
CHECK_UNDERFLOW ();
SYNC_REGISTER ();

6
module/language/tree-il/compile-glil.scm
View file

@ -286,6 +286,7 @@
(for-each comp-push args)
(emit-code src (make-glil-call 'goto/apply (1+ (length args)))))
((push)
(emit-code src (make-glil-call 'new-frame 0))
(comp-push proc)
(for-each comp-push args)
(emit-code src (make-glil-call 'apply (1+ (length args))))
@ -343,7 +344,10 @@
(else
(let ((MV (make-label)) (POST (make-label))
(producer (car args)) (consumer (cadr args)))
(if (not (eq? context 'tail))
(emit-code src (make-glil-call 'new-frame 0)))
(comp-push consumer)
(emit-code src (make-glil-call 'new-frame 0))
(comp-push producer)
(emit-code src (make-glil-mv-call 0 MV))
(case context
@ -444,6 +448,8 @@
(emit-branch src 'br (lexical-ref-gensym proc)))
(else
(if (not (eq? context 'tail))
(emit-code src (make-glil-call 'new-frame 0)))
(comp-push proc)
(for-each comp-push args)
(let ((len (length args)))

10
test-suite/tests/tree-il.test
View file

@ -80,7 +80,7 @@
(program 0 0 0 () (toplevel ref foo) (const 1) (call goto/args 1)))
(assert-tree-il->glil/pmatch
(begin (apply (toplevel foo) (const 1)) (void))
(program 0 0 0 () (toplevel ref foo) (const 1) (mv-call 1 ,l1)
(program 0 0 0 () (call new-frame 0) (toplevel ref foo) (const 1) (mv-call 1 ,l1)
(call drop 1) (branch br ,l2)
(label ,l3) (mv-bind () #f) (unbind)
(label ,l4)
@ -88,7 +88,7 @@
(and (eq? l1 l3) (eq? l2 l4)))
(assert-tree-il->glil
(apply (toplevel foo) (apply (toplevel bar)))
(program 0 0 0 () (toplevel ref foo) (toplevel ref bar) (call call 0)
(program 0 0 0 () (toplevel ref foo) (call new-frame 0) (toplevel ref bar) (call call 0)
(call goto/args 1))))
(with-test-prefix "conditional"
@ -444,7 +444,7 @@
(assert-tree-il->glil/pmatch
(begin (apply (primitive @apply) (toplevel foo) (toplevel bar)) (void))
(program 0 0 0 ()
(toplevel ref apply) (toplevel ref foo) (toplevel ref bar) (mv-call 2 ,l1)
(call new-frame 0) (toplevel ref apply) (toplevel ref foo) (toplevel ref bar) (mv-call 2 ,l1)
(call drop 1) (branch br ,l2) (label ,l3) (mv-bind () #f) (unbind)
(label ,l4)
(void) (call return 1))
@ -453,7 +453,7 @@
(apply (toplevel foo) (apply (toplevel @apply) (toplevel bar) (toplevel baz)))
(program 0 0 0 ()
(toplevel ref foo)
(toplevel ref bar) (toplevel ref baz) (call apply 2)
(call new-frame 0) (toplevel ref bar) (toplevel ref baz) (call apply 2)
(call goto/args 1))))
(with-test-prefix "call/cc"
@ -463,7 +463,7 @@
(assert-tree-il->glil/pmatch
(begin (apply (primitive @call-with-current-continuation) (toplevel foo)) (void))
(program 0 0 0 ()
(toplevel ref call-with-current-continuation) (toplevel ref foo) (mv-call 1 ,l1)
(call new-frame 0) (toplevel ref call-with-current-continuation) (toplevel ref foo) (mv-call 1 ,l1)
(call drop 1) (branch br ,l2) (label ,l3) (mv-bind () #f) (unbind)
(label ,l4)
(void) (call return 1))