1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation
* All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* IBM Corporation - initial implementation
*****************************************************************************/
#include <cpu.h>
/* the exception frame should be page aligned
* the_exception_frame is used by the handler to store a copy of all
* registers after an exception; this copy can then be used by paflof's
* exception handler to printout a register dump */
cell the_exception_frame[0x400 / CELLSIZE] __attribute__ ((aligned(PAGE_SIZE)));;
/* the_client_frame is the register save area when starting a client */
cell the_client_frame[0x1000 / CELLSIZE] __attribute__ ((aligned(0x100)));
cell the_client_stack[0x8000 / CELLSIZE] __attribute__ ((aligned(0x100)));
/* THE forth stack */
cell the_data_stack[0x2000 / CELLSIZE] __attribute__ ((aligned(0x100)));
/* the forth return stack */
cell the_return_stack[0x2000 / CELLSIZE] __attribute__ ((aligned(0x100)));
/* forth stack and return-stack pointers */
cell *restrict dp;
cell *restrict rp;
/* terminal input buffer */
cell the_tib[0x1000 / CELLSIZE] __attribute__ ((aligned(0x100)));
/* temporary string buffers */
char the_pockets[NUMPOCKETS * POCKETSIZE] __attribute__ ((aligned(0x100)));
cell the_comp_buffer[0x1000 / CELLSIZE] __attribute__ ((aligned(0x100)));
cell the_heap[HEAP_SIZE / CELLSIZE] __attribute__ ((aligned(0x1000)));
cell *the_heap_start = &the_heap[0];
cell *the_heap_end = &the_heap[HEAP_SIZE / CELLSIZE];
extern void io_putchar(unsigned char);
static unsigned long __attribute__((noinline))
call_c(cell arg0, cell arg1, cell arg2, cell entry)
{
register unsigned long r3 asm("r3") = arg0.u;
register unsigned long r4 asm("r4") = arg1.u;
register unsigned long r5 asm("r5") = arg2.u;
register unsigned long r6 = entry.u ;
asm volatile("mflr 31 ; mtctr %4 ; bctrl ; mtlr 31"
: "=r" (r3)
: "r" (r3), "r" (r4), "r" (r5), "r" (r6)
: "ctr", "r6", "r7", "r8", "r9", "r10", "r11",
"r12", "r13", "r31", "lr", "cc");
return r3;
}
long
writeLogByte_wrapper(long x, long y)
{
unsigned long result;
SET_CI;
result = writeLogByte(x, y);
CLR_CI;
return result;
}
/**
* Standard write function for the libc.
*
* @param fd file descriptor (should always be 1 or 2)
* @param buf pointer to the array with the output characters
* @param count number of bytes to be written
* @return the number of bytes that have been written successfully
*/
int
write(int fd, const void *buf, int count)
{
int i;
char *ptr = (char *)buf;
if (fd != 1 && fd != 2)
return 0;
for (i = 0; i < count; i++) {
if (*ptr == '\n')
io_putchar('\r');
io_putchar(*ptr++);
}
return i;
}
/* This should probably be temporary until a better solution is found */
void
asm_cout(long Character, long UART, long NVRAM __attribute__((unused)))
{
if (UART)
io_putchar(Character);
}
|
