semihost server example program
Dependencies: SWD mbed USBLocalFileSystem BaseDAP USBDAP
LPCXpresso LPC11U68 | LPCXpresso LPC1549 | FRDM-KL46Z | EA LPC4088 QSB app-board | LPC1768 app-board | LPC810 | LPC1114FN28 | |
---|---|---|---|---|---|---|---|
server | server | server | server | server | client | client | |
SWDIO | D12 | D12 | D12 | p25 | p21 | p4(P0_2) | p12 |
SWCLK | D10 | D10 | D10 | p26 | p22 | p3(P0_3) | p3 |
nRESET *option | D6 | D6 | D6 | p34 | p30 | p1(P0_5) | p23 |
GND | GND | GND | GND | p1 | p1 | p7 | p22 |
3.3V | P3V3 | P3V3 | P3V3 | p44 | p40 | p6 | p21 |
flash write | SW2(P0_1) | SW3(P1_9) | SW1 | p14 joystick center | p14 joystick center |
client example:
Import programlpc810-semihost_helloworld
semihost client example program
Semihost.cpp@2:32e9437348ad, 2013-09-05 (annotated)
- Committer:
- va009039
- Date:
- Thu Sep 05 09:34:12 2013 +0000
- Revision:
- 2:32e9437348ad
- Parent:
- 1:eb30547ba84d
- Child:
- 3:d7a7cde0bfb8
bug fix sys_writec,sys_exit not resume.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
va009039 | 2:32e9437348ad | 1 | // Semihost.cpp 2013/9/5 |
va009039 | 1:eb30547ba84d | 2 | #include "Semihost.h" |
va009039 | 1:eb30547ba84d | 3 | #include "mydebug.h" |
va009039 | 1:eb30547ba84d | 4 | |
va009039 | 1:eb30547ba84d | 5 | Semihost::Semihost(Target2* target, Serial* usbpc) : _target(target),_pc(usbpc) |
va009039 | 1:eb30547ba84d | 6 | { |
va009039 | 1:eb30547ba84d | 7 | _dirpath = "/local"; |
va009039 | 1:eb30547ba84d | 8 | } |
va009039 | 1:eb30547ba84d | 9 | |
va009039 | 1:eb30547ba84d | 10 | void Semihost::mount(const char* dirpath) |
va009039 | 1:eb30547ba84d | 11 | { |
va009039 | 1:eb30547ba84d | 12 | _dirpath = (char*)dirpath; |
va009039 | 1:eb30547ba84d | 13 | } |
va009039 | 1:eb30547ba84d | 14 | |
va009039 | 1:eb30547ba84d | 15 | int Semihost::poll() |
va009039 | 1:eb30547ba84d | 16 | { |
va009039 | 1:eb30547ba84d | 17 | if (_target->getStatus() != TARGET_HALTED) { |
va009039 | 1:eb30547ba84d | 18 | return 0; |
va009039 | 1:eb30547ba84d | 19 | } |
va009039 | 1:eb30547ba84d | 20 | uint32_t pc = _target->pc; |
va009039 | 1:eb30547ba84d | 21 | if (pc & 1) { |
va009039 | 1:eb30547ba84d | 22 | return 0; |
va009039 | 1:eb30547ba84d | 23 | } |
va009039 | 1:eb30547ba84d | 24 | if (rd<uint16_t>(pc) != 0xbeab) { // BKPT #171 |
va009039 | 1:eb30547ba84d | 25 | return 0; |
va009039 | 1:eb30547ba84d | 26 | } |
va009039 | 2:32e9437348ad | 27 | uint32_t reason = _target->r0; |
va009039 | 2:32e9437348ad | 28 | _target->r0 = exec(reason, _target->r1); |
va009039 | 2:32e9437348ad | 29 | if (reason == SYS_EXIT) { |
va009039 | 2:32e9437348ad | 30 | return SYS_EXIT; |
va009039 | 2:32e9437348ad | 31 | } |
va009039 | 1:eb30547ba84d | 32 | _target->pc = pc + 3; // skip bkpt #171 |
va009039 | 1:eb30547ba84d | 33 | _target->resume(); |
va009039 | 2:32e9437348ad | 34 | return reason; |
va009039 | 1:eb30547ba84d | 35 | } |
va009039 | 1:eb30547ba84d | 36 | |
va009039 | 1:eb30547ba84d | 37 | int Semihost::exec(uint32_t reason, uint32_t arg) |
va009039 | 1:eb30547ba84d | 38 | { |
va009039 | 1:eb30547ba84d | 39 | int result = 0; |
va009039 | 1:eb30547ba84d | 40 | switch(reason) { |
va009039 | 1:eb30547ba84d | 41 | case 0x01: result = sys_open(arg); break; |
va009039 | 1:eb30547ba84d | 42 | case 0x02: result = sys_close(arg); break; |
va009039 | 1:eb30547ba84d | 43 | case 0x03: result = sys_writec(arg); break; |
va009039 | 1:eb30547ba84d | 44 | case 0x04: result = sys_write0(arg); break; |
va009039 | 1:eb30547ba84d | 45 | case 0x05: result = sys_write(arg); break; |
va009039 | 1:eb30547ba84d | 46 | case 0x06: result = sys_read(arg); break; |
va009039 | 1:eb30547ba84d | 47 | case 0x07: result = sys_readc(arg); break; |
va009039 | 1:eb30547ba84d | 48 | case 0x09: result = sys_istty(arg); break; |
va009039 | 1:eb30547ba84d | 49 | case 0x0a: result = sys_fseek(arg); break; |
va009039 | 1:eb30547ba84d | 50 | case 0x0b: result = sys_ensure(arg); break; |
va009039 | 1:eb30547ba84d | 51 | case 0x0c: result = sys_flen(arg); break; |
va009039 | 1:eb30547ba84d | 52 | case 0x0e: result = sys_remove(arg); break; |
va009039 | 1:eb30547ba84d | 53 | case 0x0f: result = sys_rename(arg); break; |
va009039 | 1:eb30547ba84d | 54 | case 0x18: result = sys_exit(arg); break; |
va009039 | 1:eb30547ba84d | 55 | |
va009039 | 1:eb30547ba84d | 56 | case 0x100: result = usr_xffind(arg); break; |
va009039 | 1:eb30547ba84d | 57 | case 0x101: result = usr_uid(arg); break; |
va009039 | 1:eb30547ba84d | 58 | case 0x102: result = usr_reset(arg); break; |
va009039 | 1:eb30547ba84d | 59 | case 0x103: result = usr_vbus(arg); break; |
va009039 | 1:eb30547ba84d | 60 | case 0x104: result = usr_powerdown(arg); break; |
va009039 | 1:eb30547ba84d | 61 | case 0x105: result = usr_disabledebug(arg); break; |
va009039 | 1:eb30547ba84d | 62 | |
va009039 | 1:eb30547ba84d | 63 | default: |
va009039 | 1:eb30547ba84d | 64 | _pc->printf("[semihost]error reason=%08x arg=%08x\n", reason, arg); |
va009039 | 1:eb30547ba84d | 65 | result = -1; |
va009039 | 1:eb30547ba84d | 66 | } |
va009039 | 1:eb30547ba84d | 67 | return result; |
va009039 | 1:eb30547ba84d | 68 | } |
va009039 | 1:eb30547ba84d | 69 | |
va009039 | 1:eb30547ba84d | 70 | int Semihost::sys_open(uint32_t arg) // 0x01 |
va009039 | 1:eb30547ba84d | 71 | { |
va009039 | 1:eb30547ba84d | 72 | char name[64]; |
va009039 | 1:eb30547ba84d | 73 | _build_name(name, sizeof(name), arg, arg+8); |
va009039 | 1:eb30547ba84d | 74 | const char* mode[] = {"r", "rb", "r+", "r+b", "w", "wb", "w+", "w+b", "a", "ab", "a+", "a+b"}; |
va009039 | 1:eb30547ba84d | 75 | uint32_t mode_index = rd<uint32_t>(arg+4); |
va009039 | 1:eb30547ba84d | 76 | FILE* fp = fopen(name, mode[mode_index]); |
va009039 | 1:eb30547ba84d | 77 | if (fp) { |
va009039 | 1:eb30547ba84d | 78 | return (uint32_t)fp; |
va009039 | 1:eb30547ba84d | 79 | } |
va009039 | 1:eb30547ba84d | 80 | _pc->printf("\n[semihost]file open error [%s]\n", name); |
va009039 | 1:eb30547ba84d | 81 | return -1; |
va009039 | 1:eb30547ba84d | 82 | } |
va009039 | 1:eb30547ba84d | 83 | |
va009039 | 1:eb30547ba84d | 84 | int Semihost::sys_close(uint32_t arg) // 0x02 |
va009039 | 1:eb30547ba84d | 85 | { |
va009039 | 1:eb30547ba84d | 86 | FILE* fp = reinterpret_cast<FILE*>(rd<uint32_t>(arg)); |
va009039 | 1:eb30547ba84d | 87 | int r = fclose(fp); |
va009039 | 1:eb30547ba84d | 88 | if (r == 0) { |
va009039 | 1:eb30547ba84d | 89 | return 0; |
va009039 | 1:eb30547ba84d | 90 | } |
va009039 | 1:eb30547ba84d | 91 | return -1; |
va009039 | 1:eb30547ba84d | 92 | } |
va009039 | 1:eb30547ba84d | 93 | |
va009039 | 1:eb30547ba84d | 94 | int Semihost::sys_writec(uint32_t arg) // 0x03 |
va009039 | 1:eb30547ba84d | 95 | { |
va009039 | 2:32e9437348ad | 96 | uint8_t c = rd<uint8_t>(arg); |
va009039 | 2:32e9437348ad | 97 | return _pc->putc(c); |
va009039 | 1:eb30547ba84d | 98 | } |
va009039 | 1:eb30547ba84d | 99 | |
va009039 | 1:eb30547ba84d | 100 | int Semihost::sys_write0(uint32_t arg) // 0x04 |
va009039 | 1:eb30547ba84d | 101 | { |
va009039 | 1:eb30547ba84d | 102 | uint32_t p = rd<uint32_t>(arg); |
va009039 | 1:eb30547ba84d | 103 | while(1) { |
va009039 | 1:eb30547ba84d | 104 | uint8_t c = rd<uint8_t>(p++); |
va009039 | 1:eb30547ba84d | 105 | if (c == '\0') { |
va009039 | 1:eb30547ba84d | 106 | break; |
va009039 | 1:eb30547ba84d | 107 | } |
va009039 | 1:eb30547ba84d | 108 | _pc->putc(c & 0xff); |
va009039 | 1:eb30547ba84d | 109 | } |
va009039 | 1:eb30547ba84d | 110 | return 0; |
va009039 | 1:eb30547ba84d | 111 | } |
va009039 | 1:eb30547ba84d | 112 | |
va009039 | 1:eb30547ba84d | 113 | int Semihost::sys_write(uint32_t arg) // 0x05 |
va009039 | 1:eb30547ba84d | 114 | { |
va009039 | 1:eb30547ba84d | 115 | FILE* fp = reinterpret_cast<FILE*>(rd<uint32_t>(arg)); |
va009039 | 1:eb30547ba84d | 116 | uint32_t p = rd<uint32_t>(arg+4); |
va009039 | 1:eb30547ba84d | 117 | int count = rd<uint32_t>(arg+8); |
va009039 | 1:eb30547ba84d | 118 | while(count > 0) { |
va009039 | 1:eb30547ba84d | 119 | uint8_t c = rd<uint8_t>(p++); |
va009039 | 1:eb30547ba84d | 120 | if (fputc(c, fp) == EOF) { |
va009039 | 1:eb30547ba84d | 121 | return count; |
va009039 | 1:eb30547ba84d | 122 | } |
va009039 | 1:eb30547ba84d | 123 | count--; |
va009039 | 1:eb30547ba84d | 124 | } |
va009039 | 1:eb30547ba84d | 125 | return 0; |
va009039 | 1:eb30547ba84d | 126 | } |
va009039 | 1:eb30547ba84d | 127 | |
va009039 | 1:eb30547ba84d | 128 | int Semihost::sys_read(uint32_t arg) // 0x06 |
va009039 | 1:eb30547ba84d | 129 | { |
va009039 | 1:eb30547ba84d | 130 | FILE* fp = reinterpret_cast<FILE*>(rd<uint32_t>(arg)); |
va009039 | 1:eb30547ba84d | 131 | uint32_t p = rd<uint32_t>(arg+4); |
va009039 | 1:eb30547ba84d | 132 | int count = rd<uint32_t>(arg+8); |
va009039 | 1:eb30547ba84d | 133 | while(count > 0) { |
va009039 | 1:eb30547ba84d | 134 | int c = fgetc(fp); |
va009039 | 1:eb30547ba84d | 135 | if (c == EOF) { |
va009039 | 1:eb30547ba84d | 136 | return count; |
va009039 | 1:eb30547ba84d | 137 | } |
va009039 | 1:eb30547ba84d | 138 | wr<uint8_t>(p++, c); |
va009039 | 1:eb30547ba84d | 139 | count--; |
va009039 | 1:eb30547ba84d | 140 | } |
va009039 | 1:eb30547ba84d | 141 | return 0; |
va009039 | 1:eb30547ba84d | 142 | } |
va009039 | 1:eb30547ba84d | 143 | |
va009039 | 1:eb30547ba84d | 144 | int Semihost::sys_readc(uint32_t arg) // 0x07 |
va009039 | 1:eb30547ba84d | 145 | { |
va009039 | 1:eb30547ba84d | 146 | return _pc->getc() & 0xff; |
va009039 | 1:eb30547ba84d | 147 | } |
va009039 | 1:eb30547ba84d | 148 | |
va009039 | 1:eb30547ba84d | 149 | int Semihost::sys_istty(uint32_t arg) // 0x09 |
va009039 | 1:eb30547ba84d | 150 | { |
va009039 | 1:eb30547ba84d | 151 | FILE* fp = reinterpret_cast<FILE*>(rd<uint32_t>(arg)); |
va009039 | 1:eb30547ba84d | 152 | return 0; |
va009039 | 1:eb30547ba84d | 153 | } |
va009039 | 1:eb30547ba84d | 154 | |
va009039 | 1:eb30547ba84d | 155 | int Semihost::sys_fseek(uint32_t arg) // 0x0a |
va009039 | 1:eb30547ba84d | 156 | { |
va009039 | 1:eb30547ba84d | 157 | FILE* fp = reinterpret_cast<FILE*>(rd<uint32_t>(arg)); |
va009039 | 1:eb30547ba84d | 158 | int offset = rd<uint32_t>(arg+4); |
va009039 | 1:eb30547ba84d | 159 | return fseek(fp, offset, SEEK_SET); |
va009039 | 1:eb30547ba84d | 160 | } |
va009039 | 1:eb30547ba84d | 161 | |
va009039 | 1:eb30547ba84d | 162 | int Semihost::sys_ensure(uint32_t arg) // 0x0b |
va009039 | 1:eb30547ba84d | 163 | { |
va009039 | 1:eb30547ba84d | 164 | FILE* fp = reinterpret_cast<FILE*>(rd<uint32_t>(arg)); |
va009039 | 1:eb30547ba84d | 165 | return -1; |
va009039 | 1:eb30547ba84d | 166 | } |
va009039 | 1:eb30547ba84d | 167 | |
va009039 | 1:eb30547ba84d | 168 | int Semihost::sys_flen(uint32_t arg) // 0x0c |
va009039 | 1:eb30547ba84d | 169 | { |
va009039 | 1:eb30547ba84d | 170 | FILE* fp = reinterpret_cast<FILE*>(rd<uint32_t>(arg)); |
va009039 | 1:eb30547ba84d | 171 | return ftell(fp); |
va009039 | 1:eb30547ba84d | 172 | } |
va009039 | 1:eb30547ba84d | 173 | |
va009039 | 1:eb30547ba84d | 174 | int Semihost::sys_remove(uint32_t arg) // 0x0e |
va009039 | 1:eb30547ba84d | 175 | { |
va009039 | 1:eb30547ba84d | 176 | |
va009039 | 1:eb30547ba84d | 177 | char name[64]; |
va009039 | 1:eb30547ba84d | 178 | _build_name(name, sizeof(name), arg, arg+4); |
va009039 | 1:eb30547ba84d | 179 | return remove(name); |
va009039 | 1:eb30547ba84d | 180 | } |
va009039 | 1:eb30547ba84d | 181 | |
va009039 | 1:eb30547ba84d | 182 | int Semihost::sys_rename(uint32_t arg) // 0x0f |
va009039 | 1:eb30547ba84d | 183 | { |
va009039 | 1:eb30547ba84d | 184 | char oldname[64]; |
va009039 | 1:eb30547ba84d | 185 | char newname[64]; |
va009039 | 1:eb30547ba84d | 186 | _build_name(oldname, sizeof(oldname), arg, arg+4); |
va009039 | 1:eb30547ba84d | 187 | _build_name(newname, sizeof(newname), arg+8, arg+12); |
va009039 | 1:eb30547ba84d | 188 | return rename(oldname, newname); |
va009039 | 1:eb30547ba84d | 189 | } |
va009039 | 1:eb30547ba84d | 190 | |
va009039 | 1:eb30547ba84d | 191 | int Semihost::sys_exit(uint32_t arg) // 0x18 |
va009039 | 1:eb30547ba84d | 192 | { |
va009039 | 1:eb30547ba84d | 193 | _pc->printf("\n[semihost]EXIT!!!\n"); |
va009039 | 2:32e9437348ad | 194 | _pc->printf("r0=%08x r1=%08x r2=%08x r3=%08x\n", |
va009039 | 2:32e9437348ad | 195 | _target->r0.read(),_target->r1.read(),_target->r2.read(),_target->r3.read()); |
va009039 | 2:32e9437348ad | 196 | _pc->printf("r4=%08x r5=%08x r6=%08x r7=%08x\n", |
va009039 | 2:32e9437348ad | 197 | _target->r4.read(),_target->r5.read(),_target->r6.read(),_target->r7.read()); |
va009039 | 2:32e9437348ad | 198 | _pc->printf("sp=%08x lr=%08x pc=%08x xpsr=%08x\n", |
va009039 | 2:32e9437348ad | 199 | _target->sp.read(),_target->lr.read(),_target->pc.read(),_target->xpsr.read()); |
va009039 | 1:eb30547ba84d | 200 | return -1; |
va009039 | 1:eb30547ba84d | 201 | } |
va009039 | 1:eb30547ba84d | 202 | |
va009039 | 1:eb30547ba84d | 203 | void Semihost::_build_name(char* buf, int size, uint32_t arg1, uint32_t arg2) |
va009039 | 1:eb30547ba84d | 204 | { |
va009039 | 1:eb30547ba84d | 205 | strcpy(buf, _dirpath); |
va009039 | 1:eb30547ba84d | 206 | uint32_t p = rd<uint32_t>(arg1); |
va009039 | 1:eb30547ba84d | 207 | int len = rd<uint32_t>(arg2); |
va009039 | 1:eb30547ba84d | 208 | int pos = strlen(buf); |
va009039 | 1:eb30547ba84d | 209 | if (buf[pos-1] != '/') { |
va009039 | 1:eb30547ba84d | 210 | buf[pos++] = '/'; |
va009039 | 1:eb30547ba84d | 211 | buf[pos] = '\0'; |
va009039 | 1:eb30547ba84d | 212 | } |
va009039 | 1:eb30547ba84d | 213 | for(int i = 0; i < len && pos < size-1; i++) { |
va009039 | 1:eb30547ba84d | 214 | buf[pos++] = rd<uint8_t>(p++); |
va009039 | 1:eb30547ba84d | 215 | } |
va009039 | 1:eb30547ba84d | 216 | buf[pos] = '\0'; |
va009039 | 1:eb30547ba84d | 217 | } |
va009039 | 1:eb30547ba84d | 218 | |
va009039 | 1:eb30547ba84d | 219 | int Semihost::usr_xffind(uint32_t arg) // 0x100 |
va009039 | 1:eb30547ba84d | 220 | { |
va009039 | 1:eb30547ba84d | 221 | return -1; |
va009039 | 1:eb30547ba84d | 222 | } |
va009039 | 1:eb30547ba84d | 223 | |
va009039 | 1:eb30547ba84d | 224 | int Semihost::usr_uid(uint32_t arg) // 0x101 |
va009039 | 1:eb30547ba84d | 225 | { |
va009039 | 2:32e9437348ad | 226 | uint32_t p = rd<uint32_t>(arg); |
va009039 | 1:eb30547ba84d | 227 | uint32_t len = rd<uint32_t>(arg+4); |
va009039 | 2:32e9437348ad | 228 | const char* uid = "101000000000000000000002F7F00000"; |
va009039 | 2:32e9437348ad | 229 | for(int i = 0; i < 32 && i < len; i++) { |
va009039 | 2:32e9437348ad | 230 | wr<uint8_t>(p++, uid[i]); |
va009039 | 1:eb30547ba84d | 231 | } |
va009039 | 1:eb30547ba84d | 232 | return 0; |
va009039 | 1:eb30547ba84d | 233 | } |
va009039 | 1:eb30547ba84d | 234 | |
va009039 | 1:eb30547ba84d | 235 | int Semihost::usr_reset(uint32_t arg) // 0x102 |
va009039 | 1:eb30547ba84d | 236 | { |
va009039 | 1:eb30547ba84d | 237 | _target->Reset(); |
va009039 | 1:eb30547ba84d | 238 | _target->setup(); |
va009039 | 1:eb30547ba84d | 239 | return 0; |
va009039 | 1:eb30547ba84d | 240 | } |
va009039 | 1:eb30547ba84d | 241 | |
va009039 | 1:eb30547ba84d | 242 | int Semihost::usr_vbus(uint32_t arg) // 0x103 |
va009039 | 1:eb30547ba84d | 243 | { |
va009039 | 1:eb30547ba84d | 244 | return -1; |
va009039 | 1:eb30547ba84d | 245 | } |
va009039 | 1:eb30547ba84d | 246 | |
va009039 | 1:eb30547ba84d | 247 | int Semihost::usr_powerdown(uint32_t arg) // 0x104 |
va009039 | 1:eb30547ba84d | 248 | { |
va009039 | 1:eb30547ba84d | 249 | return -1; |
va009039 | 1:eb30547ba84d | 250 | } |
va009039 | 1:eb30547ba84d | 251 | |
va009039 | 1:eb30547ba84d | 252 | int Semihost::usr_disabledebug(uint32_t arg) // 0x105 |
va009039 | 1:eb30547ba84d | 253 | { |
va009039 | 1:eb30547ba84d | 254 | return -1; |
va009039 | 1:eb30547ba84d | 255 | } |