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1 | e6e5906b | pbrook | /*
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2 | e6e5906b | pbrook | * m68k/ColdFire Semihosting ssycall interface
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3 | e6e5906b | pbrook | *
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4 | e6e5906b | pbrook | * Copyright (c) 2005 CodeSourcery, LLC. Written by Paul Brook.
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5 | e6e5906b | pbrook | *
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6 | e6e5906b | pbrook | * This program is free software; you can redistribute it and/or modify
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7 | e6e5906b | pbrook | * it under the terms of the GNU General Public License as published by
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8 | e6e5906b | pbrook | * the Free Software Foundation; either version 2 of the License, or
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9 | e6e5906b | pbrook | * (at your option) any later version.
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10 | e6e5906b | pbrook | *
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11 | e6e5906b | pbrook | * This program is distributed in the hope that it will be useful,
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12 | e6e5906b | pbrook | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | e6e5906b | pbrook | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | e6e5906b | pbrook | * GNU General Public License for more details.
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15 | e6e5906b | pbrook | *
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16 | e6e5906b | pbrook | * You should have received a copy of the GNU General Public License
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17 | e6e5906b | pbrook | * along with this program; if not, write to the Free Software
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18 | e6e5906b | pbrook | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 | e6e5906b | pbrook | */
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20 | e6e5906b | pbrook | |
21 | e6e5906b | pbrook | #include <sys/types.h> |
22 | e6e5906b | pbrook | #include <sys/stat.h> |
23 | e6e5906b | pbrook | #include <errno.h> |
24 | e6e5906b | pbrook | #include <fcntl.h> |
25 | e6e5906b | pbrook | #include <unistd.h> |
26 | e6e5906b | pbrook | #include <stdlib.h> |
27 | e6e5906b | pbrook | #include <stdio.h> |
28 | e6e5906b | pbrook | #include <sys/time.h> |
29 | e6e5906b | pbrook | #include <time.h> |
30 | e6e5906b | pbrook | |
31 | e6e5906b | pbrook | #include "qemu.h" |
32 | e6e5906b | pbrook | |
33 | e6e5906b | pbrook | #define HOSTED_EXIT 0 |
34 | e6e5906b | pbrook | #define HOSTED_PUTCHAR 1 /* Obsolete */ |
35 | e6e5906b | pbrook | #define HOSTED_OPEN 2 |
36 | e6e5906b | pbrook | #define HOSTED_CLOSE 3 |
37 | e6e5906b | pbrook | #define HOSTED_READ 4 |
38 | e6e5906b | pbrook | #define HOSTED_WRITE 5 |
39 | e6e5906b | pbrook | #define HOSTED_LSEEK 6 |
40 | e6e5906b | pbrook | #define HOSTED_RENAME 7 |
41 | e6e5906b | pbrook | #define HOSTED_UNLINK 8 |
42 | e6e5906b | pbrook | #define HOSTED_STAT 9 |
43 | e6e5906b | pbrook | #define HOSTED_FSTAT 10 |
44 | e6e5906b | pbrook | #define HOSTED_GETTIMEOFDAY 11 |
45 | e6e5906b | pbrook | #define HOSTED_ISATTY 12 |
46 | e6e5906b | pbrook | #define HOSTED_SYSTEM 13 |
47 | e6e5906b | pbrook | |
48 | e6e5906b | pbrook | typedef uint32_t gdb_mode_t;
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49 | e6e5906b | pbrook | typedef uint32_t gdb_time_t;
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50 | e6e5906b | pbrook | |
51 | e6e5906b | pbrook | struct m68k_gdb_stat {
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52 | e6e5906b | pbrook | uint32_t gdb_st_dev; /* device */
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53 | e6e5906b | pbrook | uint32_t gdb_st_ino; /* inode */
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54 | e6e5906b | pbrook | gdb_mode_t gdb_st_mode; /* protection */
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55 | e6e5906b | pbrook | uint32_t gdb_st_nlink; /* number of hard links */
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56 | e6e5906b | pbrook | uint32_t gdb_st_uid; /* user ID of owner */
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57 | e6e5906b | pbrook | uint32_t gdb_st_gid; /* group ID of owner */
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58 | e6e5906b | pbrook | uint32_t gdb_st_rdev; /* device type (if inode device) */
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59 | e6e5906b | pbrook | uint64_t gdb_st_size; /* total size, in bytes */
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60 | e6e5906b | pbrook | uint64_t gdb_st_blksize; /* blocksize for filesystem I/O */
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61 | e6e5906b | pbrook | uint64_t gdb_st_blocks; /* number of blocks allocated */
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62 | e6e5906b | pbrook | gdb_time_t gdb_st_atime; /* time of last access */
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63 | e6e5906b | pbrook | gdb_time_t gdb_st_mtime; /* time of last modification */
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64 | e6e5906b | pbrook | gdb_time_t gdb_st_ctime; /* time of last change */
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65 | e6e5906b | pbrook | }; |
66 | e6e5906b | pbrook | |
67 | e6e5906b | pbrook | struct gdb_timeval {
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68 | e6e5906b | pbrook | gdb_time_t tv_sec; /* second */
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69 | e6e5906b | pbrook | uint64_t tv_usec; /* microsecond */
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70 | e6e5906b | pbrook | }; |
71 | e6e5906b | pbrook | |
72 | e6e5906b | pbrook | #define GDB_O_RDONLY 0x0 |
73 | e6e5906b | pbrook | #define GDB_O_WRONLY 0x1 |
74 | e6e5906b | pbrook | #define GDB_O_RDWR 0x2 |
75 | e6e5906b | pbrook | #define GDB_O_APPEND 0x8 |
76 | e6e5906b | pbrook | #define GDB_O_CREAT 0x200 |
77 | e6e5906b | pbrook | #define GDB_O_TRUNC 0x400 |
78 | e6e5906b | pbrook | #define GDB_O_EXCL 0x800 |
79 | e6e5906b | pbrook | |
80 | e6e5906b | pbrook | static int translate_openflags(int flags) |
81 | e6e5906b | pbrook | { |
82 | e6e5906b | pbrook | int hf;
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83 | e6e5906b | pbrook | |
84 | e6e5906b | pbrook | if (flags & GDB_O_WRONLY)
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85 | e6e5906b | pbrook | hf = O_WRONLY; |
86 | e6e5906b | pbrook | else if (flags & GDB_O_RDWR) |
87 | e6e5906b | pbrook | hf = O_RDWR; |
88 | e6e5906b | pbrook | else
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89 | e6e5906b | pbrook | hf = O_RDONLY; |
90 | e6e5906b | pbrook | |
91 | e6e5906b | pbrook | if (flags & GDB_O_APPEND) hf |= O_APPEND;
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92 | e6e5906b | pbrook | if (flags & GDB_O_CREAT) hf |= O_CREAT;
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93 | e6e5906b | pbrook | if (flags & GDB_O_TRUNC) hf |= O_TRUNC;
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94 | e6e5906b | pbrook | if (flags & GDB_O_EXCL) hf |= O_EXCL;
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95 | e6e5906b | pbrook | |
96 | e6e5906b | pbrook | return hf;
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97 | e6e5906b | pbrook | } |
98 | e6e5906b | pbrook | |
99 | e6e5906b | pbrook | static void translate_stat(struct m68k_gdb_stat *p, struct stat *s) |
100 | e6e5906b | pbrook | { |
101 | e6e5906b | pbrook | p->gdb_st_dev = tswap16(s->st_dev); |
102 | e6e5906b | pbrook | p->gdb_st_ino = tswap16(s->st_ino); |
103 | e6e5906b | pbrook | p->gdb_st_mode = tswap32(s->st_mode); |
104 | e6e5906b | pbrook | p->gdb_st_nlink = tswap16(s->st_nlink); |
105 | e6e5906b | pbrook | p->gdb_st_uid = tswap16(s->st_uid); |
106 | e6e5906b | pbrook | p->gdb_st_gid = tswap16(s->st_gid); |
107 | e6e5906b | pbrook | p->gdb_st_rdev = tswap16(s->st_rdev); |
108 | e6e5906b | pbrook | p->gdb_st_size = tswap32(s->st_size); |
109 | e6e5906b | pbrook | p->gdb_st_atime = tswap32(s->st_atime); |
110 | e6e5906b | pbrook | p->gdb_st_mtime = tswap32(s->st_mtime); |
111 | e6e5906b | pbrook | p->gdb_st_ctime = tswap32(s->st_ctime); |
112 | e6e5906b | pbrook | p->gdb_st_blksize = tswap32(s->st_blksize); |
113 | e6e5906b | pbrook | p->gdb_st_blocks = tswap32(s->st_blocks); |
114 | e6e5906b | pbrook | } |
115 | e6e5906b | pbrook | |
116 | e6e5906b | pbrook | static inline uint32_t check_err(CPUM68KState *env, uint32_t code) |
117 | e6e5906b | pbrook | { |
118 | e6e5906b | pbrook | if (code == (uint32_t)-1) { |
119 | e6e5906b | pbrook | env->sr |= CCF_C; |
120 | e6e5906b | pbrook | } else {
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121 | e6e5906b | pbrook | env->sr &= ~CCF_C; |
122 | e6e5906b | pbrook | env->dregs[0] = code;
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123 | e6e5906b | pbrook | } |
124 | e6e5906b | pbrook | return code;
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125 | e6e5906b | pbrook | } |
126 | e6e5906b | pbrook | |
127 | e6e5906b | pbrook | #define ARG(x) tswap32(args[x])
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128 | e6e5906b | pbrook | void do_m68k_semihosting(CPUM68KState *env, int nr) |
129 | e6e5906b | pbrook | { |
130 | e6e5906b | pbrook | uint32_t *args; |
131 | e6e5906b | pbrook | |
132 | e6e5906b | pbrook | args = (uint32_t *)env->dregs[1];
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133 | e6e5906b | pbrook | switch (nr) {
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134 | e6e5906b | pbrook | case HOSTED_EXIT:
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135 | e6e5906b | pbrook | exit(env->dregs[0]);
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136 | e6e5906b | pbrook | case HOSTED_OPEN:
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137 | e6e5906b | pbrook | /* Assume name is NULL terminated. */
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138 | e6e5906b | pbrook | check_err(env, open((char *)ARG(0), translate_openflags(ARG(2)), |
139 | e6e5906b | pbrook | ARG(3)));
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140 | e6e5906b | pbrook | break;
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141 | e6e5906b | pbrook | case HOSTED_CLOSE:
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142 | e6e5906b | pbrook | { |
143 | e6e5906b | pbrook | /* Ignore attempts to close stdin/out/err. */
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144 | e6e5906b | pbrook | int fd = ARG(0); |
145 | e6e5906b | pbrook | if (fd > 2) |
146 | e6e5906b | pbrook | check_err(env, close(fd)); |
147 | e6e5906b | pbrook | else
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148 | e6e5906b | pbrook | check_err(env, 0);
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149 | e6e5906b | pbrook | break;
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150 | e6e5906b | pbrook | } |
151 | e6e5906b | pbrook | case HOSTED_READ:
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152 | e6e5906b | pbrook | check_err(env, read(ARG(0), (void *)ARG(1), ARG(2))); |
153 | e6e5906b | pbrook | break;
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154 | e6e5906b | pbrook | case HOSTED_WRITE:
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155 | e6e5906b | pbrook | check_err(env, write(ARG(0), (void *)ARG(1), ARG(2))); |
156 | e6e5906b | pbrook | break;
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157 | e6e5906b | pbrook | case HOSTED_LSEEK:
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158 | e6e5906b | pbrook | { |
159 | e6e5906b | pbrook | uint64_t off; |
160 | e6e5906b | pbrook | off = (uint32_t)ARG(2) | ((uint64_t)ARG(1) << 32); |
161 | e6e5906b | pbrook | check_err(env, lseek(ARG(0), off, ARG(3))); |
162 | e6e5906b | pbrook | } |
163 | e6e5906b | pbrook | break;
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164 | e6e5906b | pbrook | case HOSTED_RENAME:
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165 | e6e5906b | pbrook | /* Assume names are NULL terminated. */
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166 | e6e5906b | pbrook | check_err(env, rename((char *)ARG(0), (char *)ARG(2))); |
167 | e6e5906b | pbrook | break;
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168 | e6e5906b | pbrook | case HOSTED_UNLINK:
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169 | e6e5906b | pbrook | /* Assume name is NULL terminated. */
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170 | e6e5906b | pbrook | check_err(env, unlink((char *)ARG(0))); |
171 | e6e5906b | pbrook | break;
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172 | e6e5906b | pbrook | case HOSTED_STAT:
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173 | e6e5906b | pbrook | /* Assume name is NULL terminated. */
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174 | e6e5906b | pbrook | { |
175 | e6e5906b | pbrook | struct stat s;
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176 | e6e5906b | pbrook | int rc;
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177 | e6e5906b | pbrook | rc = check_err(env, stat((char *)ARG(0), &s)); |
178 | e6e5906b | pbrook | if (rc == 0) { |
179 | e6e5906b | pbrook | translate_stat((struct m68k_gdb_stat *)ARG(2), &s); |
180 | e6e5906b | pbrook | } |
181 | e6e5906b | pbrook | } |
182 | e6e5906b | pbrook | break;
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183 | e6e5906b | pbrook | case HOSTED_FSTAT:
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184 | e6e5906b | pbrook | { |
185 | e6e5906b | pbrook | struct stat s;
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186 | e6e5906b | pbrook | int rc;
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187 | e6e5906b | pbrook | rc = check_err(env, fstat(ARG(0), &s));
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188 | e6e5906b | pbrook | if (rc == 0) { |
189 | e6e5906b | pbrook | translate_stat((struct m68k_gdb_stat *)ARG(1), &s); |
190 | e6e5906b | pbrook | } |
191 | e6e5906b | pbrook | } |
192 | e6e5906b | pbrook | break;
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193 | e6e5906b | pbrook | case HOSTED_GETTIMEOFDAY:
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194 | e6e5906b | pbrook | { |
195 | e6e5906b | pbrook | struct timeval tv;
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196 | e6e5906b | pbrook | struct gdb_timeval *p;
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197 | e6e5906b | pbrook | int rc;
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198 | e6e5906b | pbrook | rc = check_err(env, gettimeofday(&tv, NULL));
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199 | e6e5906b | pbrook | if (rc != 0) { |
200 | e6e5906b | pbrook | p = (struct gdb_timeval *)ARG(0); |
201 | e6e5906b | pbrook | p->tv_sec = tswap32(tv.tv_sec); |
202 | e6e5906b | pbrook | p->tv_usec = tswap64(tv.tv_usec); |
203 | e6e5906b | pbrook | } |
204 | e6e5906b | pbrook | } |
205 | e6e5906b | pbrook | break;
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206 | e6e5906b | pbrook | case HOSTED_ISATTY:
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207 | e6e5906b | pbrook | check_err(env, isatty(ARG(0)));
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208 | e6e5906b | pbrook | break;
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209 | e6e5906b | pbrook | case HOSTED_SYSTEM:
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210 | e6e5906b | pbrook | /* Assume name is NULL terminated. */
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211 | e6e5906b | pbrook | check_err(env, system((char *)ARG(0))); |
212 | e6e5906b | pbrook | break;
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213 | e6e5906b | pbrook | default:
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214 | e6e5906b | pbrook | cpu_abort(env, "Unsupported semihosting syscall %d\n", nr);
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215 | e6e5906b | pbrook | } |
216 | e6e5906b | pbrook | } |