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1.1 root 1: /* netboot
2: *
3: * asm.h,v
4: * Revision 1.1 1993/07/08 16:03:49 brezak
5: * Diskless boot prom code from Jim McKim ([email protected])
6: *
7: * Revision 1.1.1.1 1993/05/28 11:41:07 mckim
8: * Initial version.
9: *
10: *
11: * source in this file came from
12: * the 386BSD boot blocks written by Julian Elsicher.
13: *
14: * Ported to Boot 386BSD by Julian Elsicher ([email protected]) Sept. 1992
15: *
16: * Mach Operating System
17: * Copyright (c) 1991,1990,1989 Carnegie Mellon University
18: * All Rights Reserved.
19: *
20: * Permission to use, copy, modify and distribute this software and its
21: * documentation is hereby granted, provided that both the copyright
22: * notice and this permission notice appear in all copies of the
23: * software, derivative works or modified versions, and any portions
24: * thereof, and that both notices appear in supporting documentation.
25: *
26: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
27: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
28: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
29: *
30: * Carnegie Mellon requests users of this software to return to
31: *
32: * Software Distribution Coordinator or [email protected]
33: * School of Computer Science
34: * Carnegie Mellon University
35: * Pittsburgh PA 15213-3890
36: *
37: * any improvements or extensions that they make and grant Carnegie Mellon
38: * the rights to redistribute these changes.
39: */
40:
41: #define S_ARG0 4(%esp)
42: #define S_ARG1 8(%esp)
43: #define S_ARG2 12(%esp)
44: #define S_ARG3 16(%esp)
45:
46: #define FRAME pushl %ebp; movl %esp, %ebp
47: #define EMARF leave
48:
49: #define B_ARG0 8(%ebp)
50: #define B_ARG1 12(%ebp)
51: #define B_ARG2 16(%ebp)
52: #define B_ARG3 20(%ebp)
53:
54: #ifdef wheeze
55:
56: #define ALIGN 4
57: #define EXT(x) x
58: #define LEXT(x) x:
59: #define LCL(x) ./**/x
60:
61: #define LB(x,n) ./**/x
62: #define LBb(x,n) ./**/x
63: #define LBf(x,n) ./**/x
64:
65: #define SVC lcall $7,$0
66:
67: #define String .string
68: #define Value .value
69: #define Times(a,b) [a\*b]
70: #define Divide(a,b) [a\\b]
71:
72: #define INB inb (%dx)
73: #define OUTB outb (%dx)
74: #define INL inl (%dx)
75: #define OUTL outl (%dx)
76:
77: #else wheeze
78: /* #define ALIGN */
79: #define ALIGN 4
80: #define LCL(x) x
81:
82: #define LB(x,n) n
83: #ifdef __STDC__
84: #define EXT(x) _ ## x
85: #define LEXT(x) _ ## x ## :
86:
87: #define LBb(x,n) n ## b
88: #define LBf(x,n) n ## f
89: #else __STDC__
90: #define EXT(x) _/**/x
91: #define LEXT(x) _/**/x/**/:
92: #define LBb(x,n) n/**/b
93: #define LBf(x,n) n/**/f
94: #endif __STDC__
95: #define SVC .byte 0x9a; .long 0; .word 0x7
96:
97: #define String .ascii
98: #define Value .word
99: #define Times(a,b) (a*b)
100: #define Divide(a,b) (a/b)
101:
102: #define INB inb %dx, %al
103: #define OUTB outb %al, %dx
104: #define INL inl %dx, %eax
105: #define OUTL outl %eax, %dx
106:
107: #endif wheeze
108:
109: #define data32 .byte 0x66
110: #define data16 .byte 0x66
111: #define addr16 .byte 0x67
112:
113:
114:
115: #ifdef GPROF
116: #ifdef __STDC__
117:
118: #define MCOUNT .data; LB(x, 9); .long 0; .text; lea LBb(x, 9),%edx; call mcount
119: #define ENTRY(x) .globl EXT(x); .align ALIGN; LEXT(x) ; \
120: pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
121: #define ENTRY2(x,y) .globl EXT(x); .globl EXT(y); \
122: .align ALIGN; LEXT(x) LEXT(y) ; \
123: pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
124: #define ASENTRY(x) .globl x; .align ALIGN; x ## : ; \
125: pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
126:
127: #else __STDC__
128:
129: #define MCOUNT .data; LB(x, 9): .long 0; .text; lea LBb(x, 9),%edx; call mcount
130: #define ENTRY(x) .globl EXT(x); .align ALIGN; LEXT(x) ; \
131: pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
132: #define ENTRY2(x,y) .globl EXT(x); .globl EXT(y); \
133: .align ALIGN; LEXT(x) LEXT(y)
134: #define ASENTRY(x) .globl x; .align ALIGN; x: ; \
135: pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
136:
137: #endif __STDC__
138: #else GPROF
139: #ifdef __STDC__
140:
141: #define MCOUNT
142: #define ENTRY(x) .globl EXT(x); .align ALIGN; LEXT(x)
143: #define ENTRY2(x,y) .globl EXT(x); .globl EXT(y); \
144: .align ALIGN; LEXT(x) LEXT(y)
145: #define ASENTRY(x) .globl x; .align ALIGN; x ## :
146:
147: #else __STDC__
148:
149: #define MCOUNT
150: #define ENTRY(x) .globl EXT(x); .align ALIGN; LEXT(x)
151: #define ENTRY2(x,y) .globl EXT(x); .globl EXT(y); \
152: .align ALIGN; LEXT(x) LEXT(y)
153: #define ASENTRY(x) .globl x; .align ALIGN; x:
154:
155: #endif __STDC__
156: #endif GPROF
157:
158: #define Entry(x) .globl EXT(x); .align ALIGN; LEXT(x)
159: #define DATA(x) .globl EXT(x); .align ALIGN; LEXT(x)
160:
161: CR0_PE = 0x00000001
162:
163: KERN_CODE_SEG = 0x08
164: KERN_DATA_SEG = 0x10
165: BOOT_16_SEG = 0x18
166:
167: #define opsize .byte 0x66
168: #define addrsize .byte 0x67
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