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b9c100d0 AW |
1 | /* Copyright (C) 2010 Free Software Foundation, Inc. |
2 | * | |
3 | * This library is free software; you can redistribute it and/or | |
4 | * modify it under the terms of the GNU Lesser General Public License | |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public | |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
16 | * 02110-1301 USA | |
17 | */ | |
18 | ||
19 | #ifndef SCM_CONTROL_H | |
20 | #define SCM_CONTROL_H | |
21 | ||
22 | ||
adaf86ec AW |
23 | #define SCM_F_PROMPT_INLINE 0x1 |
24 | #define SCM_F_PROMPT_ESCAPE 0x2 | |
25 | ||
26 | #define SCM_PROMPT_P(x) (!SCM_IMP (x) && SCM_TYP7(x) == scm_tc7_prompt) | |
27 | #define SCM_PROMPT_FLAGS(x) (SCM_CELL_WORD ((x), 0) >> 8) | |
28 | #define SCM_PROMPT_INLINE_P(x) (SCM_PROMPT_FLAGS (x) & SCM_F_PROMPT_INLINE) | |
29 | #define SCM_PROMPT_ESCAPE_P(x) (SCM_PROMPT_FLAGS (x) & SCM_F_PROMPT_ESCAPE) | |
30 | #define SCM_PROMPT_TAG(x) (SCM_CELL_OBJECT ((x), 1) | |
31 | #define SCM_PROMPT_REGISTERS(x) ((struct scm_prompt_registers*)SCM_CELL_WORD ((x), 2)) | |
32 | #define SCM_PROMPT_DYNENV(x) (SCM_CELL_OBJECT ((x), 3)) | |
33 | #define SCM_PROMPT_HANDLER(x) (SCM_CELL_OBJECT ((x), 4)) | |
34 | #define SCM_PROMPT_PRE_UNWIND_HANDLER(x) (SCM_CELL_OBJECT ((x), 5)) | |
35 | ||
36 | #define SCM_PROMPT_SETJMP(p) (SCM_I_SETJMP (SCM_PROMPT_REGISTERS (p)->regs)) | |
37 | ||
38 | struct scm_prompt_registers | |
39 | { | |
40 | scm_t_uint8 *ip; | |
41 | SCM *sp; | |
42 | SCM *fp; | |
43 | scm_i_jmp_buf regs; | |
44 | }; | |
45 | ||
46 | ||
47 | SCM_INTERNAL SCM scm_c_make_prompt (SCM vm, SCM k, SCM handler, SCM pre_unwind, | |
48 | scm_t_uint8 inline_p, scm_t_uint8 escape_only_p); | |
49 | ||
50 | ||
b9c100d0 AW |
51 | SCM_INTERNAL void scm_register_control (void); |
52 | ||
53 | ||
54 | #endif /* SCM_CONTROL_H */ |