mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 03:40:34 +02:00
53befeb700
(Not quite finished, the following will be done tomorrow. module/srfi/*.scm module/rnrs/*.scm module/scripts/*.scm testsuite/*.scm guile-readline/* )
123 lines
4.1 KiB
C
123 lines
4.1 KiB
C
/* Copyright (C) 2001 Free Software Foundation, Inc.
|
||
* *
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public License
|
||
* as published by the Free Software Foundation; either version 3 of
|
||
* the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful, but
|
||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library; if not, write to the Free Software
|
||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||
* 02110-1301 USA
|
||
*/
|
||
|
||
#ifndef _SCM_FRAMES_H_
|
||
#define _SCM_FRAMES_H_
|
||
|
||
#include <libguile.h>
|
||
#include "programs.h"
|
||
|
||
|
||
/*
|
||
* VM frames
|
||
*/
|
||
|
||
/* VM Frame Layout
|
||
---------------
|
||
|
||
| | <- fp + bp->nargs + bp->nlocs + 4
|
||
+------------------+ = SCM_FRAME_UPPER_ADDRESS (fp)
|
||
| Return address |
|
||
| MV return address|
|
||
| Dynamic link |
|
||
| External link | <- fp + bp->nargs + bp->nlocs
|
||
| Local variable 1 | = SCM_FRAME_DATA_ADDRESS (fp)
|
||
| Local variable 0 | <- fp + bp->nargs
|
||
| Argument 1 |
|
||
| Argument 0 | <- fp
|
||
| Program | <- fp - 1
|
||
+------------------+ = SCM_FRAME_LOWER_ADDRESS (fp)
|
||
| |
|
||
|
||
As can be inferred from this drawing, it is assumed that
|
||
`sizeof (SCM *) == sizeof (SCM)', since pointers (the `link' parts) are
|
||
assumed to be as long as SCM objects. */
|
||
|
||
#define SCM_FRAME_DATA_ADDRESS(fp) \
|
||
(fp + SCM_PROGRAM_DATA (SCM_FRAME_PROGRAM (fp))->nargs \
|
||
+ SCM_PROGRAM_DATA (SCM_FRAME_PROGRAM (fp))->nlocs)
|
||
#define SCM_FRAME_UPPER_ADDRESS(fp) (SCM_FRAME_DATA_ADDRESS (fp) + 4)
|
||
#define SCM_FRAME_LOWER_ADDRESS(fp) (fp - 1)
|
||
|
||
#define SCM_FRAME_BYTE_CAST(x) ((scm_byte_t *) SCM_UNPACK (x))
|
||
#define SCM_FRAME_STACK_CAST(x) ((SCM *) SCM_UNPACK (x))
|
||
|
||
#define SCM_FRAME_RETURN_ADDRESS(fp) \
|
||
(SCM_FRAME_BYTE_CAST (SCM_FRAME_DATA_ADDRESS (fp)[3]))
|
||
#define SCM_FRAME_MV_RETURN_ADDRESS(fp) \
|
||
(SCM_FRAME_BYTE_CAST (SCM_FRAME_DATA_ADDRESS (fp)[2]))
|
||
#define SCM_FRAME_DYNAMIC_LINK(fp) \
|
||
(SCM_FRAME_STACK_CAST (SCM_FRAME_DATA_ADDRESS (fp)[1]))
|
||
#define SCM_FRAME_SET_DYNAMIC_LINK(fp, dl) \
|
||
((SCM_FRAME_DATA_ADDRESS (fp)[1])) = (SCM)(dl);
|
||
#define SCM_FRAME_EXTERNAL_LINK(fp) (SCM_FRAME_DATA_ADDRESS (fp)[0])
|
||
#define SCM_FRAME_VARIABLE(fp,i) fp[i]
|
||
#define SCM_FRAME_PROGRAM(fp) fp[-1]
|
||
|
||
|
||
/*
|
||
* Heap frames
|
||
*/
|
||
|
||
SCM_API scm_t_bits scm_tc16_vm_frame;
|
||
|
||
struct scm_vm_frame
|
||
{
|
||
SCM stack_holder;
|
||
SCM *fp;
|
||
SCM *sp;
|
||
scm_byte_t *ip;
|
||
scm_t_ptrdiff offset;
|
||
};
|
||
|
||
#define SCM_VM_FRAME_P(x) SCM_SMOB_PREDICATE (scm_tc16_vm_frame, x)
|
||
#define SCM_VM_FRAME_DATA(x) ((struct scm_vm_frame*)SCM_SMOB_DATA (x))
|
||
#define SCM_VM_FRAME_STACK_HOLDER(f) SCM_VM_FRAME_DATA(f)->stack_holder
|
||
#define SCM_VM_FRAME_FP(f) SCM_VM_FRAME_DATA(f)->fp
|
||
#define SCM_VM_FRAME_SP(f) SCM_VM_FRAME_DATA(f)->sp
|
||
#define SCM_VM_FRAME_IP(f) SCM_VM_FRAME_DATA(f)->ip
|
||
#define SCM_VM_FRAME_OFFSET(f) SCM_VM_FRAME_DATA(f)->offset
|
||
#define SCM_VALIDATE_VM_FRAME(p,x) SCM_MAKE_VALIDATE (p, x, VM_FRAME_P)
|
||
|
||
/* FIXME rename scm_byte_t */
|
||
SCM_API SCM scm_c_make_vm_frame (SCM stack_holder, SCM *fp, SCM *sp,
|
||
scm_byte_t *ip, scm_t_ptrdiff offset);
|
||
SCM_API SCM scm_vm_frame_p (SCM obj);
|
||
SCM_API SCM scm_vm_frame_program (SCM frame);
|
||
SCM_API SCM scm_vm_frame_arguments (SCM frame);
|
||
SCM_API SCM scm_vm_frame_source (SCM frame);
|
||
SCM_API SCM scm_vm_frame_local_ref (SCM frame, SCM index);
|
||
SCM_API SCM scm_vm_frame_local_set_x (SCM frame, SCM index, SCM val);
|
||
SCM_API SCM scm_vm_frame_return_address (SCM frame);
|
||
SCM_API SCM scm_vm_frame_mv_return_address (SCM frame);
|
||
SCM_API SCM scm_vm_frame_dynamic_link (SCM frame);
|
||
SCM_API SCM scm_vm_frame_external_link (SCM frame);
|
||
SCM_API SCM scm_vm_frame_stack (SCM frame);
|
||
|
||
SCM_API SCM scm_c_vm_frame_prev (SCM frame);
|
||
|
||
SCM_INTERNAL void scm_bootstrap_frames (void);
|
||
SCM_INTERNAL void scm_init_frames (void);
|
||
|
||
#endif /* _SCM_FRAMES_H_ */
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|