wok view linld/stuff/src/COMMON.H @ rev 22179

linld: spare up to 30k more for zImage (again)
author Pascal Bellard <pascal.bellard@slitaz.org>
date Sat Nov 09 13:26:32 2019 +0100 (4 weeks ago)
parents a0dccc5d133d
children 664d83fb04f9
line source
1 // This file is distributed under GPL
2 //
3 // Common defs not belonging to CRTL
5 #define NL "\n"
6 #define VERSION_STR "0.97"
8 #if 0 // DEBUG
9 #undef NDEBUG
10 #define DEBUG
11 #define static
12 #else // not DEBUG
13 #define NDEBUG
14 #undef DEBUG
15 #endif
17 typedef unsigned long u32; typedef signed long s32;
18 typedef unsigned short u16; typedef signed short s16;
19 typedef unsigned char u8; typedef signed char s8;
21 const u16 _16k = 16*1024u;
22 const u16 _32k = 32*1024u;
23 const u32 _64k = 64*1024ul;
24 const u32 _1m = 1024ul*1024ul;
25 const u32 _32m = 32*1024ul*1024ul;
26 const u32 _64m = 64*1024ul*1024ul;
28 const PAGE_BITS = 12;
29 const PAGE_SIZE = 1<<PAGE_BITS;
30 const PAGE_MASK = PAGE_SIZE-1;
32 // WARNING!
33 // BC 3.1 bug: seg() will generate incorrect code if inlined!
34 // replaced by _dirty_ hack for now
35 // u16 seg(const void far* p) { return FP_SEG(p); }
36 inline u16 seg(const void far*) { return _DS; }
38 inline u16 ofs(const void* p) { return FP_OFF(p); }
40 extern struct image_himem {
41 int fd;
42 u32 fallback;
43 u32 size;
44 u32 remaining;
45 u32 buf;
46 u32 *bufv;
47 const char *errmsg;
48 u32 chunk_size;
49 void (*next_chunk)(struct image_himem *);
50 u16 state;
51 u16 fd2close;
52 } imgs[2];
53 #define pm (imgs[0])
54 #define initrd (imgs[1])
55 #define pm2initrd(p) (p+1)
57 extern u8 pm_high;
58 extern int skip_alloc;
59 extern u32 base_himem;
60 extern u32 far *initrd_desc;
62 extern _fastcall void memcpy_image(struct image_himem *m);
63 extern _fastcall void storepage(u32 *dst);
64 #ifdef LARGE_IMAGES
65 extern _fastcall void reset_bufv(unsigned long *p);
66 extern "C" unsigned long* prev_bufv();
67 extern "C" unsigned long* next_bufv();
68 #define next(p) p = next_bufv()
69 #define prev(p) p = prev_bufv()
70 #else
71 #define reset_bufv(p)
72 #define next(p) ++p
73 #define prev(p) --p
74 #endif
75 extern char vcpi;
76 extern char version_string[];
77 extern const char* kernel_name;
78 extern const char* initrd_name;
79 extern const char* cmdline;
80 extern u32 root_dev;
81 extern u32 vid_mode;
82 // External asm helpers
83 extern _fastcall void xmm_alloc(struct image_himem *m);
84 extern u32 topmem;
85 extern "C" u32 memtop();
86 extern "C" void enable_a20_or_die();
87 extern "C" void vm2rm();
88 extern "C" void hook_int15_88();
90 // C++ helpers
91 #ifdef DEBUG
92 extern "C" void hang();
93 #endif
95 void load_image(struct image_himem *m);
96 extern _fastcall void open_image(struct image_himem *m, const char *name);
97 extern _fastcall int read_image(struct image_himem *m);
98 void load_kernel();
99 void load_initrd();
100 extern "C" void boot_kernel();