gbdk-2020 | GameBoy Development Kit |
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gbdk-lib/include/setjmp.h
1 /*-------------------------------------------------------------------------
2 setjmp.h - header file for setjmp & longjmp ANSI routines
3
4 Copyright (C) 1999, Sandeep Dutta . sandeep.dutta@usa.net
5
6 This library is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
9 later version.
10
11 This library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this library; see the file COPYING. If not, write to the
18 Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
19 MA 02110-1301, USA.
20
21 As a special exception, if you link this library with other files,
22 some of which are compiled with SDCC, to produce an executable,
23 this library does not by itself cause the resulting executable to
24 be covered by the GNU General Public License. This exception does
25 not however invalidate any other reasons why the executable file
26 might be covered by the GNU General Public License.
27 -------------------------------------------------------------------------*/
28
29 #ifndef __SDCC_SETJMP_H
30 #define __SDCC_SETJMP_H
31
32 #define SP_SIZE 1
33
34 #ifdef __SDCC_STACK_AUTO
35 #define BP_SIZE SP_SIZE
36 #else
37 #define BP_SIZE 0
38 #endif
39
40 #ifdef __SDCC_USE_XSTACK
41 #define SPX_SIZE 1
42 #else
43 #define SPX_SIZE 0
44 #endif
45
46 #define BPX_SIZE SPX_SIZE
47
48 #ifdef __SDCC_MODEL_HUGE
49 #define RET_SIZE 3
50 #else
51 #define RET_SIZE 2
52 #endif
53
54 #if defined (__SDCC_z80) || defined (__SDCC_z180) || defined (__SDCC_r2k) || defined (__SDCC_r3ka) || defined (__SDCC_tlcs90) || defined (__SDCC_ez80_z80) || defined (__SDCC_z80n)
55 typedef unsigned char jmp_buf[6]; /* 2 for the stack pointer, 2 for the return address, 2 for the frame pointer. */
56 #elif defined (__SDCC_ds390) || defined (__SDCC_stm8) && defined (__SDCC_MODEL_LARGE)
57 typedef unsigned char jmp_buf[5]; /* 2 for the stack pointer, 3 for the return address. */
58 #elif defined (__SDCC_stm8) || defined (__SDCC_sm83) || defined (__SDCC_hc08) || defined (__SDCC_s08)
59 typedef unsigned char jmp_buf[4]; /* 2 for the stack pointer, 2 for the return address. */
60 #elif defined (__SDCC_pdk13) || defined (__SDCC_pdk14) || defined (__SDCC_pdk15)
61 typedef unsigned char jmp_buf[3]; /* 1 for the stack pointer, 2 for the return address. */
62 #else
63 typedef unsigned char jmp_buf[RET_SIZE + SP_SIZE + BP_SIZE + SPX_SIZE + BPX_SIZE];
64 #endif
65
66 int __setjmp (jmp_buf) OLDCALL;
67
68 /* C99 might require setjmp to be a macro. The standard seems self-contradicting on this issue. */
69 /* However, it is clear that the standards allow setjmp to be a macro. */
70 #define setjmp(jump_buf) __setjmp(jump_buf)
71
72 #ifndef __SDCC_HIDE_LONGJMP
73 _Noreturn void longjmp(jmp_buf, int) OLDCALL;
74 #endif
75
76 #undef RET_SIZE
77 #undef SP_SIZE
78 #undef BP_SIZE
79 #undef SPX_SIZE
80 #undef BPX_SIZE
81
82 #endif
83
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