2331
by pbrook
Add ARM Angel semihosting to system emulation. |
1 |
/*
|
2 |
* Arm "Angel" semihosting syscalls
|
|
3163
by ths
find -type f | xargs sed -i 's/[\t ]$//g' # on most files |
3 |
*
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
4 |
* Copyright (c) 2005, 2007 CodeSourcery.
|
5 |
* Written by Paul Brook.
|
|
6 |
*
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7 |
* This program is free software; you can redistribute it and/or modify
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8 |
* it under the terms of the GNU General Public License as published by
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|
9 |
* the Free Software Foundation; either version 2 of the License, or
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|
10 |
* (at your option) any later version.
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11 |
*
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12 |
* This program is distributed in the hope that it will be useful,
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13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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|
15 |
* GNU General Public License for more details.
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16 |
*
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17 |
* You should have received a copy of the GNU General Public License
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18 |
* along with this program; if not, write to the Free Software
|
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6181
by blueswir1
Fix more FSF addresses |
19 |
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
20 |
* MA 02110-1301, USA.
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
21 |
*/
|
22 |
||
23 |
#include <sys/types.h> |
|
24 |
#include <sys/stat.h> |
|
25 |
#include <fcntl.h> |
|
26 |
#include <unistd.h> |
|
27 |
#include <stdlib.h> |
|
28 |
#include <stdio.h> |
|
29 |
#include <time.h> |
|
30 |
||
31 |
#include "cpu.h" |
|
32 |
#ifdef CONFIG_USER_ONLY
|
|
33 |
#include "qemu.h" |
|
34 |
||
35 |
#define ARM_ANGEL_HEAP_SIZE (128 * 1024 * 1024)
|
|
36 |
#else
|
|
3664
by pbrook
Break up vl.h. |
37 |
#include "qemu-common.h" |
38 |
#include "sysemu.h" |
|
39 |
#include "gdbstub.h" |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
40 |
#endif
|
41 |
||
42 |
#define SYS_OPEN 0x01
|
|
43 |
#define SYS_CLOSE 0x02
|
|
44 |
#define SYS_WRITEC 0x03
|
|
45 |
#define SYS_WRITE0 0x04
|
|
46 |
#define SYS_WRITE 0x05
|
|
47 |
#define SYS_READ 0x06
|
|
48 |
#define SYS_READC 0x07
|
|
49 |
#define SYS_ISTTY 0x09
|
|
50 |
#define SYS_SEEK 0x0a
|
|
51 |
#define SYS_FLEN 0x0c
|
|
52 |
#define SYS_TMPNAM 0x0d
|
|
53 |
#define SYS_REMOVE 0x0e
|
|
54 |
#define SYS_RENAME 0x0f
|
|
55 |
#define SYS_CLOCK 0x10
|
|
56 |
#define SYS_TIME 0x11
|
|
57 |
#define SYS_SYSTEM 0x12
|
|
58 |
#define SYS_ERRNO 0x13
|
|
59 |
#define SYS_GET_CMDLINE 0x15
|
|
60 |
#define SYS_HEAPINFO 0x16
|
|
61 |
#define SYS_EXIT 0x18
|
|
62 |
||
63 |
#ifndef O_BINARY
|
|
64 |
#define O_BINARY 0
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|
65 |
#endif
|
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66 |
||
2355
by pbrook
GDB hosted syscalls. |
67 |
#define GDB_O_RDONLY 0x000
|
68 |
#define GDB_O_WRONLY 0x001
|
|
69 |
#define GDB_O_RDWR 0x002
|
|
70 |
#define GDB_O_APPEND 0x008
|
|
71 |
#define GDB_O_CREAT 0x200
|
|
72 |
#define GDB_O_TRUNC 0x400
|
|
73 |
#define GDB_O_BINARY 0
|
|
74 |
||
75 |
static int gdb_open_modeflags[12] = { |
|
76 |
GDB_O_RDONLY, |
|
77 |
GDB_O_RDONLY | GDB_O_BINARY, |
|
78 |
GDB_O_RDWR, |
|
79 |
GDB_O_RDWR | GDB_O_BINARY, |
|
80 |
GDB_O_WRONLY | GDB_O_CREAT | GDB_O_TRUNC, |
|
81 |
GDB_O_WRONLY | GDB_O_CREAT | GDB_O_TRUNC | GDB_O_BINARY, |
|
82 |
GDB_O_RDWR | GDB_O_CREAT | GDB_O_TRUNC, |
|
83 |
GDB_O_RDWR | GDB_O_CREAT | GDB_O_TRUNC | GDB_O_BINARY, |
|
84 |
GDB_O_WRONLY | GDB_O_CREAT | GDB_O_APPEND, |
|
85 |
GDB_O_WRONLY | GDB_O_CREAT | GDB_O_APPEND | GDB_O_BINARY, |
|
86 |
GDB_O_RDWR | GDB_O_CREAT | GDB_O_APPEND, |
|
87 |
GDB_O_RDWR | GDB_O_CREAT | GDB_O_APPEND | GDB_O_BINARY |
|
88 |
};
|
|
89 |
||
90 |
static int open_modeflags[12] = { |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
91 |
O_RDONLY, |
92 |
O_RDONLY | O_BINARY, |
|
93 |
O_RDWR, |
|
94 |
O_RDWR | O_BINARY, |
|
95 |
O_WRONLY | O_CREAT | O_TRUNC, |
|
96 |
O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
|
97 |
O_RDWR | O_CREAT | O_TRUNC, |
|
98 |
O_RDWR | O_CREAT | O_TRUNC | O_BINARY, |
|
99 |
O_WRONLY | O_CREAT | O_APPEND, |
|
100 |
O_WRONLY | O_CREAT | O_APPEND | O_BINARY, |
|
101 |
O_RDWR | O_CREAT | O_APPEND, |
|
102 |
O_RDWR | O_CREAT | O_APPEND | O_BINARY |
|
103 |
};
|
|
104 |
||
105 |
#ifdef CONFIG_USER_ONLY
|
|
106 |
static inline uint32_t set_swi_errno(TaskState *ts, uint32_t code) |
|
107 |
{
|
|
108 |
if (code == (uint32_t)-1) |
|
109 |
ts->swi_errno = errno; |
|
110 |
return code; |
|
111 |
}
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|
112 |
#else
|
|
113 |
static inline uint32_t set_swi_errno(CPUState *env, uint32_t code) |
|
114 |
{
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|
115 |
return code; |
|
116 |
}
|
|
117 |
||
2851
by pbrook
M68k system mode semihosting. |
118 |
#include "softmmu-semi.h" |
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
119 |
#endif
|
120 |
||
2355
by pbrook
GDB hosted syscalls. |
121 |
static target_ulong arm_semi_syscall_len; |
122 |
||
2955
by pbrook
ARM GDB semihosting fixes |
123 |
#if !defined(CONFIG_USER_ONLY)
|
124 |
static target_ulong syscall_err; |
|
125 |
#endif
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126 |
||
2355
by pbrook
GDB hosted syscalls. |
127 |
static void arm_semi_cb(CPUState *env, target_ulong ret, target_ulong err) |
128 |
{
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|
129 |
#ifdef CONFIG_USER_ONLY
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|
130 |
TaskState *ts = env->opaque; |
|
131 |
#endif
|
|
2955
by pbrook
ARM GDB semihosting fixes |
132 |
|
2355
by pbrook
GDB hosted syscalls. |
133 |
if (ret == (target_ulong)-1) { |
134 |
#ifdef CONFIG_USER_ONLY
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|
135 |
ts->swi_errno = err; |
|
2955
by pbrook
ARM GDB semihosting fixes |
136 |
#else
|
137 |
syscall_err = err; |
|
2355
by pbrook
GDB hosted syscalls. |
138 |
#endif
|
139 |
env->regs[0] = ret; |
|
140 |
} else { |
|
141 |
/* Fixup syscalls that use nonstardard return conventions. */
|
|
142 |
switch (env->regs[0]) { |
|
143 |
case SYS_WRITE: |
|
144 |
case SYS_READ: |
|
145 |
env->regs[0] = arm_semi_syscall_len - ret; |
|
146 |
break; |
|
147 |
case SYS_SEEK: |
|
148 |
env->regs[0] = 0; |
|
149 |
break; |
|
150 |
default: |
|
151 |
env->regs[0] = ret; |
|
152 |
break; |
|
153 |
}
|
|
154 |
}
|
|
155 |
}
|
|
156 |
||
2955
by pbrook
ARM GDB semihosting fixes |
157 |
static void arm_semi_flen_cb(CPUState *env, target_ulong ret, target_ulong err) |
158 |
{
|
|
159 |
/* The size is always stored in big-endian order, extract
|
|
160 |
the value. We assume the size always fit in 32 bits. */
|
|
161 |
uint32_t size; |
|
162 |
cpu_memory_rw_debug(env, env->regs[13]-64+32, (uint8_t *)&size, 4, 0); |
|
163 |
env->regs[0] = be32_to_cpu(size); |
|
164 |
#ifdef CONFIG_USER_ONLY
|
|
165 |
((TaskState *)env->opaque)->swi_errno = err; |
|
166 |
#else
|
|
167 |
syscall_err = err; |
|
168 |
#endif
|
|
169 |
}
|
|
170 |
||
3643
by bellard
suppressed tgetx and tputx (initial patch by Thayne Harbaugh) |
171 |
#define ARG(n) \
|
172 |
({ \
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|
173 |
target_ulong __arg; \
|
|
174 |
/* FIXME - handle get_user() failure */ \ |
|
175 |
get_user_ual(__arg, args + (n) * 4); \
|
|
176 |
__arg; \
|
|
177 |
})
|
|
178 |
#define SET_ARG(n, val) put_user_ual(val, args + (n) * 4)
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
179 |
uint32_t do_arm_semihosting(CPUState *env) |
180 |
{
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|
181 |
target_ulong args; |
|
182 |
char * s; |
|
183 |
int nr; |
|
184 |
uint32_t ret; |
|
185 |
uint32_t len; |
|
186 |
#ifdef CONFIG_USER_ONLY
|
|
187 |
TaskState *ts = env->opaque; |
|
188 |
#else
|
|
189 |
CPUState *ts = env; |
|
190 |
#endif
|
|
191 |
||
192 |
nr = env->regs[0]; |
|
193 |
args = env->regs[1]; |
|
194 |
switch (nr) { |
|
195 |
case SYS_OPEN: |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
196 |
if (!(s = lock_user_string(ARG(0)))) |
197 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
198 |
return (uint32_t)-1; |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
199 |
if (ARG(1) >= 12) |
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
200 |
return (uint32_t)-1; |
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
201 |
if (strcmp(s, ":tt") == 0) { |
202 |
if (ARG(1) < 4) |
|
203 |
return STDIN_FILENO; |
|
204 |
else
|
|
205 |
return STDOUT_FILENO; |
|
206 |
}
|
|
2355
by pbrook
GDB hosted syscalls. |
207 |
if (use_gdb_syscalls()) { |
3163
by ths
find -type f | xargs sed -i 's/[\t ]$//g' # on most files |
208 |
gdb_do_syscall(arm_semi_cb, "open,%s,%x,1a4", ARG(0), |
2955
by pbrook
ARM GDB semihosting fixes |
209 |
(int)ARG(2)+1, gdb_open_modeflags[ARG(1)]); |
2355
by pbrook
GDB hosted syscalls. |
210 |
return env->regs[0]; |
211 |
} else { |
|
212 |
ret = set_swi_errno(ts, open(s, open_modeflags[ARG(1)], 0644)); |
|
213 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
214 |
unlock_user(s, ARG(0), 0); |
215 |
return ret; |
|
216 |
case SYS_CLOSE: |
|
2355
by pbrook
GDB hosted syscalls. |
217 |
if (use_gdb_syscalls()) { |
218 |
gdb_do_syscall(arm_semi_cb, "close,%x", ARG(0)); |
|
219 |
return env->regs[0]; |
|
220 |
} else { |
|
221 |
return set_swi_errno(ts, close(ARG(0))); |
|
222 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
223 |
case SYS_WRITEC: |
224 |
{
|
|
3643
by bellard
suppressed tgetx and tputx (initial patch by Thayne Harbaugh) |
225 |
char c; |
226 |
||
227 |
if (get_user_u8(c, args)) |
|
228 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
229 |
return (uint32_t)-1; |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
230 |
/* Write to debug console. stderr is near enough. */
|
2355
by pbrook
GDB hosted syscalls. |
231 |
if (use_gdb_syscalls()) { |
232 |
gdb_do_syscall(arm_semi_cb, "write,2,%x,1", args); |
|
233 |
return env->regs[0]; |
|
234 |
} else { |
|
235 |
return write(STDERR_FILENO, &c, 1); |
|
236 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
237 |
}
|
238 |
case SYS_WRITE0: |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
239 |
if (!(s = lock_user_string(args))) |
240 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
241 |
return (uint32_t)-1; |
|
2355
by pbrook
GDB hosted syscalls. |
242 |
len = strlen(s); |
243 |
if (use_gdb_syscalls()) { |
|
244 |
gdb_do_syscall(arm_semi_cb, "write,2,%x,%x\n", args, len); |
|
245 |
ret = env->regs[0]; |
|
246 |
} else { |
|
247 |
ret = write(STDERR_FILENO, s, len); |
|
248 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
249 |
unlock_user(s, args, 0); |
250 |
return ret; |
|
251 |
case SYS_WRITE: |
|
252 |
len = ARG(2); |
|
2355
by pbrook
GDB hosted syscalls. |
253 |
if (use_gdb_syscalls()) { |
254 |
arm_semi_syscall_len = len; |
|
255 |
gdb_do_syscall(arm_semi_cb, "write,%x,%x,%x", ARG(0), ARG(1), len); |
|
256 |
return env->regs[0]; |
|
257 |
} else { |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
258 |
if (!(s = lock_user(VERIFY_READ, ARG(1), len, 1))) |
259 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
260 |
return (uint32_t)-1; |
|
2355
by pbrook
GDB hosted syscalls. |
261 |
ret = set_swi_errno(ts, write(ARG(0), s, len)); |
262 |
unlock_user(s, ARG(1), 0); |
|
263 |
if (ret == (uint32_t)-1) |
|
264 |
return -1; |
|
265 |
return len - ret; |
|
266 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
267 |
case SYS_READ: |
268 |
len = ARG(2); |
|
2355
by pbrook
GDB hosted syscalls. |
269 |
if (use_gdb_syscalls()) { |
270 |
arm_semi_syscall_len = len; |
|
271 |
gdb_do_syscall(arm_semi_cb, "read,%x,%x,%x", ARG(0), ARG(1), len); |
|
272 |
return env->regs[0]; |
|
273 |
} else { |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
274 |
if (!(s = lock_user(VERIFY_WRITE, ARG(1), len, 0))) |
275 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
276 |
return (uint32_t)-1; |
|
2355
by pbrook
GDB hosted syscalls. |
277 |
do
|
278 |
ret = set_swi_errno(ts, read(ARG(0), s, len)); |
|
279 |
while (ret == -1 && errno == EINTR); |
|
280 |
unlock_user(s, ARG(1), len); |
|
281 |
if (ret == (uint32_t)-1) |
|
282 |
return -1; |
|
283 |
return len - ret; |
|
284 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
285 |
case SYS_READC: |
286 |
/* XXX: Read from debug cosole. Not implemented. */
|
|
287 |
return 0; |
|
288 |
case SYS_ISTTY: |
|
2355
by pbrook
GDB hosted syscalls. |
289 |
if (use_gdb_syscalls()) { |
290 |
gdb_do_syscall(arm_semi_cb, "isatty,%x", ARG(0)); |
|
291 |
return env->regs[0]; |
|
292 |
} else { |
|
293 |
return isatty(ARG(0)); |
|
294 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
295 |
case SYS_SEEK: |
2355
by pbrook
GDB hosted syscalls. |
296 |
if (use_gdb_syscalls()) { |
2955
by pbrook
ARM GDB semihosting fixes |
297 |
gdb_do_syscall(arm_semi_cb, "lseek,%x,%x,0", ARG(0), ARG(1)); |
2355
by pbrook
GDB hosted syscalls. |
298 |
return env->regs[0]; |
299 |
} else { |
|
300 |
ret = set_swi_errno(ts, lseek(ARG(0), ARG(1), SEEK_SET)); |
|
301 |
if (ret == (uint32_t)-1) |
|
302 |
return -1; |
|
303 |
return 0; |
|
304 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
305 |
case SYS_FLEN: |
2355
by pbrook
GDB hosted syscalls. |
306 |
if (use_gdb_syscalls()) { |
3163
by ths
find -type f | xargs sed -i 's/[\t ]$//g' # on most files |
307 |
gdb_do_syscall(arm_semi_flen_cb, "fstat,%x,%x", |
2955
by pbrook
ARM GDB semihosting fixes |
308 |
ARG(0), env->regs[13]-64); |
309 |
return env->regs[0]; |
|
2355
by pbrook
GDB hosted syscalls. |
310 |
} else { |
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
311 |
struct stat buf; |
312 |
ret = set_swi_errno(ts, fstat(ARG(0), &buf)); |
|
313 |
if (ret == (uint32_t)-1) |
|
314 |
return -1; |
|
315 |
return buf.st_size; |
|
316 |
}
|
|
317 |
case SYS_TMPNAM: |
|
318 |
/* XXX: Not implemented. */
|
|
319 |
return -1; |
|
320 |
case SYS_REMOVE: |
|
2355
by pbrook
GDB hosted syscalls. |
321 |
if (use_gdb_syscalls()) { |
2955
by pbrook
ARM GDB semihosting fixes |
322 |
gdb_do_syscall(arm_semi_cb, "unlink,%s", ARG(0), (int)ARG(1)+1); |
2355
by pbrook
GDB hosted syscalls. |
323 |
ret = env->regs[0]; |
324 |
} else { |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
325 |
if (!(s = lock_user_string(ARG(0)))) |
326 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
327 |
return (uint32_t)-1; |
|
2355
by pbrook
GDB hosted syscalls. |
328 |
ret = set_swi_errno(ts, remove(s)); |
329 |
unlock_user(s, ARG(0), 0); |
|
330 |
}
|
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
331 |
return ret; |
332 |
case SYS_RENAME: |
|
2355
by pbrook
GDB hosted syscalls. |
333 |
if (use_gdb_syscalls()) { |
334 |
gdb_do_syscall(arm_semi_cb, "rename,%s,%s", |
|
2955
by pbrook
ARM GDB semihosting fixes |
335 |
ARG(0), (int)ARG(1)+1, ARG(2), (int)ARG(3)+1); |
2355
by pbrook
GDB hosted syscalls. |
336 |
return env->regs[0]; |
337 |
} else { |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
338 |
char *s2; |
339 |
s = lock_user_string(ARG(0)); |
|
340 |
s2 = lock_user_string(ARG(2)); |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
341 |
if (!s || !s2) |
342 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
343 |
ret = (uint32_t)-1; |
|
344 |
else
|
|
345 |
ret = set_swi_errno(ts, rename(s, s2)); |
|
346 |
if (s2) |
|
347 |
unlock_user(s2, ARG(2), 0); |
|
348 |
if (s) |
|
349 |
unlock_user(s, ARG(0), 0); |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
350 |
return ret; |
351 |
}
|
|
352 |
case SYS_CLOCK: |
|
353 |
return clock() / (CLOCKS_PER_SEC / 100); |
|
354 |
case SYS_TIME: |
|
355 |
return set_swi_errno(ts, time(NULL)); |
|
356 |
case SYS_SYSTEM: |
|
2355
by pbrook
GDB hosted syscalls. |
357 |
if (use_gdb_syscalls()) { |
2955
by pbrook
ARM GDB semihosting fixes |
358 |
gdb_do_syscall(arm_semi_cb, "system,%s", ARG(0), (int)ARG(1)+1); |
2355
by pbrook
GDB hosted syscalls. |
359 |
return env->regs[0]; |
360 |
} else { |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
361 |
if (!(s = lock_user_string(ARG(0)))) |
362 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
363 |
return (uint32_t)-1; |
|
2355
by pbrook
GDB hosted syscalls. |
364 |
ret = set_swi_errno(ts, system(s)); |
365 |
unlock_user(s, ARG(0), 0); |
|
4803
by ths
Add missing return in arm-semi, by Laurent Desnogues. |
366 |
return ret; |
2355
by pbrook
GDB hosted syscalls. |
367 |
}
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
368 |
case SYS_ERRNO: |
369 |
#ifdef CONFIG_USER_ONLY
|
|
370 |
return ts->swi_errno; |
|
371 |
#else
|
|
2955
by pbrook
ARM GDB semihosting fixes |
372 |
return syscall_err; |
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
373 |
#endif
|
374 |
case SYS_GET_CMDLINE: |
|
375 |
#ifdef CONFIG_USER_ONLY
|
|
376 |
/* Build a commandline from the original argv. */
|
|
377 |
{
|
|
378 |
char **arg = ts->info->host_argv; |
|
379 |
int len = ARG(1); |
|
380 |
/* lock the buffer on the ARM side */
|
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
381 |
char *cmdline_buffer = (char*)lock_user(VERIFY_WRITE, ARG(0), len, 0); |
382 |
||
383 |
if (!cmdline_buffer) |
|
384 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
385 |
return (uint32_t)-1; |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
386 |
|
387 |
s = cmdline_buffer; |
|
388 |
while (*arg && len > 2) { |
|
389 |
int n = strlen(*arg); |
|
390 |
||
391 |
if (s != cmdline_buffer) { |
|
392 |
*(s++) = ' '; |
|
393 |
len--; |
|
394 |
}
|
|
395 |
if (n >= len) |
|
396 |
n = len - 1; |
|
397 |
memcpy(s, *arg, n); |
|
398 |
s += n; |
|
399 |
len -= n; |
|
400 |
arg++; |
|
401 |
}
|
|
402 |
/* Null terminate the string. */
|
|
403 |
*s = 0; |
|
404 |
len = s - cmdline_buffer; |
|
405 |
||
406 |
/* Unlock the buffer on the ARM side. */
|
|
407 |
unlock_user(cmdline_buffer, ARG(0), len); |
|
408 |
||
409 |
/* Adjust the commandline length argument. */
|
|
410 |
SET_ARG(1, len); |
|
411 |
||
412 |
/* Return success if commandline fit into buffer. */
|
|
413 |
return *arg ? -1 : 0; |
|
414 |
}
|
|
415 |
#else
|
|
416 |
return -1; |
|
417 |
#endif
|
|
418 |
case SYS_HEAPINFO: |
|
419 |
{
|
|
420 |
uint32_t *ptr; |
|
421 |
uint32_t limit; |
|
422 |
||
423 |
#ifdef CONFIG_USER_ONLY
|
|
424 |
/* Some C libraries assume the heap immediately follows .bss, so
|
|
425 |
allocate it using sbrk. */
|
|
426 |
if (!ts->heap_limit) { |
|
427 |
long ret; |
|
428 |
||
429 |
ts->heap_base = do_brk(0); |
|
430 |
limit = ts->heap_base + ARM_ANGEL_HEAP_SIZE; |
|
431 |
/* Try a big heap, and reduce the size if that fails. */
|
|
432 |
for (;;) { |
|
433 |
ret = do_brk(limit); |
|
434 |
if (ret != -1) |
|
435 |
break; |
|
436 |
limit = (ts->heap_base >> 1) + (limit >> 1); |
|
437 |
}
|
|
438 |
ts->heap_limit = limit; |
|
439 |
}
|
|
3167
by ths
find -type f | xargs sed -i 's/[\t ]*$//g' # Yes, again. Note the star in the regex. |
440 |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
441 |
if (!(ptr = lock_user(VERIFY_WRITE, ARG(0), 16, 0))) |
442 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
443 |
return (uint32_t)-1; |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
444 |
ptr[0] = tswap32(ts->heap_base); |
445 |
ptr[1] = tswap32(ts->heap_limit); |
|
446 |
ptr[2] = tswap32(ts->stack_base); |
|
447 |
ptr[3] = tswap32(0); /* Stack limit. */ |
|
448 |
unlock_user(ptr, ARG(0), 16); |
|
449 |
#else
|
|
450 |
limit = ram_size; |
|
3573
by bellard
Linux user memory access API change (initial patch by Thayne Harbaugh) |
451 |
if (!(ptr = lock_user(VERIFY_WRITE, ARG(0), 16, 0))) |
452 |
/* FIXME - should this error code be -TARGET_EFAULT ? */
|
|
453 |
return (uint32_t)-1; |
|
2331
by pbrook
Add ARM Angel semihosting to system emulation. |
454 |
/* TODO: Make this use the limit of the loaded application. */
|
455 |
ptr[0] = tswap32(limit / 2); |
|
456 |
ptr[1] = tswap32(limit); |
|
457 |
ptr[2] = tswap32(limit); /* Stack base */ |
|
458 |
ptr[3] = tswap32(0); /* Stack limit. */ |
|
459 |
unlock_user(ptr, ARG(0), 16); |
|
460 |
#endif
|
|
461 |
return 0; |
|
462 |
}
|
|
463 |
case SYS_EXIT: |
|
464 |
exit(0); |
|
465 |
default: |
|
466 |
fprintf(stderr, "qemu: Unsupported SemiHosting SWI 0x%02x\n", nr); |
|
467 |
cpu_dump_state(env, stderr, fprintf, 0); |
|
468 |
abort(); |
|
469 |
}
|
|
470 |
}
|