projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| f81824a9 AC |
1 | // OBSOLETE /**************************************************************************** |
| 2 | // OBSOLETE | |
| 3 | // OBSOLETE THIS SOFTWARE IS NOT COPYRIGHTED | |
| 4 | // OBSOLETE | |
| 5 | // OBSOLETE HP offers the following for use in the public domain. HP makes no | |
| 6 | // OBSOLETE warranty with regard to the software or it's performance and the | |
| 7 | // OBSOLETE user accepts the software "AS IS" with all faults. | |
| 8 | // OBSOLETE | |
| 9 | // OBSOLETE HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD | |
| 10 | // OBSOLETE TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES | |
| 11 | // OBSOLETE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 12 | // OBSOLETE | |
| 13 | // OBSOLETE ****************************************************************************/ | |
| 14 | // OBSOLETE | |
| 15 | // OBSOLETE /**************************************************************************** | |
| 16 | // OBSOLETE * Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $ | |
| 17 | // OBSOLETE * | |
| 18 | // OBSOLETE * Module name: remcom.c $ | |
| 19 | // OBSOLETE * Revision: 1.34 $ | |
| 20 | // OBSOLETE * Date: 91/03/09 12:29:49 $ | |
| 21 | // OBSOLETE * Contributor: Lake Stevens Instrument Division$ | |
| 22 | // OBSOLETE * | |
| 23 | // OBSOLETE * Description: low level support for gdb debugger. $ | |
| 24 | // OBSOLETE * | |
| 25 | // OBSOLETE * Considerations: only works on target hardware $ | |
| 26 | // OBSOLETE * | |
| 27 | // OBSOLETE * Written by: Glenn Engel $ | |
| 28 | // OBSOLETE * ModuleState: Experimental $ | |
| 29 | // OBSOLETE * | |
| 30 | // OBSOLETE * NOTES: See Below $ | |
| 31 | // OBSOLETE * | |
| 32 | // OBSOLETE * Modified for SPARC by Stu Grossman, Cygnus Support. | |
| 33 | // OBSOLETE * Based on sparc-stub.c, it's modified for SPARClite Debug Unit hardware | |
| 34 | // OBSOLETE * breakpoint support to create sparclite-stub.c, by Kung Hsu, Cygnus Support. | |
| 35 | // OBSOLETE * | |
| 36 | // OBSOLETE * This code has been extensively tested on the Fujitsu SPARClite demo board. | |
| 37 | // OBSOLETE * | |
| 38 | // OBSOLETE * To enable debugger support, two things need to happen. One, a | |
| 39 | // OBSOLETE * call to set_debug_traps() is necessary in order to allow any breakpoints | |
| 40 | // OBSOLETE * or error conditions to be properly intercepted and reported to gdb. | |
| 41 | // OBSOLETE * Two, a breakpoint needs to be generated to begin communication. This | |
| 42 | // OBSOLETE * is most easily accomplished by a call to breakpoint(). Breakpoint() | |
| 43 | // OBSOLETE * simulates a breakpoint by executing a trap #1. | |
| 44 | // OBSOLETE * | |
| 45 | // OBSOLETE ************* | |
| 46 | // OBSOLETE * | |
| 47 | // OBSOLETE * The following gdb commands are supported: | |
| 48 | // OBSOLETE * | |
| 49 | // OBSOLETE * command function Return value | |
| 50 | // OBSOLETE * | |
| 51 | // OBSOLETE * g return the value of the CPU registers hex data or ENN | |
| 52 | // OBSOLETE * G set the value of the CPU registers OK or ENN | |
| 53 | // OBSOLETE * P set the value of a single CPU register OK or ENN | |
| 54 | // OBSOLETE * | |
| 55 | // OBSOLETE * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN | |
| 56 | // OBSOLETE * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN | |
| 57 | // OBSOLETE * | |
| 58 | // OBSOLETE * c Resume at current address SNN ( signal NN) | |
| 59 | // OBSOLETE * cAA..AA Continue at address AA..AA SNN | |
| 60 | // OBSOLETE * | |
| 61 | // OBSOLETE * s Step one instruction SNN | |
| 62 | // OBSOLETE * sAA..AA Step one instruction from AA..AA SNN | |
| 63 | // OBSOLETE * | |
| 64 | // OBSOLETE * k kill | |
| 65 | // OBSOLETE * | |
| 66 | // OBSOLETE * ? What was the last sigval ? SNN (signal NN) | |
| 67 | // OBSOLETE * | |
| 68 | // OBSOLETE * All commands and responses are sent with a packet which includes a | |
| 69 | // OBSOLETE * checksum. A packet consists of | |
| 70 | // OBSOLETE * | |
| 71 | // OBSOLETE * $<packet info>#<checksum>. | |
| 72 | // OBSOLETE * | |
| 73 | // OBSOLETE * where | |
| 74 | // OBSOLETE * <packet info> :: <characters representing the command or response> | |
| 75 | // OBSOLETE * <checksum> :: < two hex digits computed as modulo 256 sum of <packetinfo>> | |
| 76 | // OBSOLETE * | |
| 77 | // OBSOLETE * When a packet is received, it is first acknowledged with either '+' or '-'. | |
| 78 | // OBSOLETE * '+' indicates a successful transfer. '-' indicates a failed transfer. | |
| 79 | // OBSOLETE * | |
| 80 | // OBSOLETE * Example: | |
| 81 | // OBSOLETE * | |
| 82 | // OBSOLETE * Host: Reply: | |
| 83 | // OBSOLETE * $m0,10#2a +$00010203040506070809101112131415#42 | |
| 84 | // OBSOLETE * | |
| 85 | // OBSOLETE ****************************************************************************/ | |
| 86 | // OBSOLETE | |
| 87 | // OBSOLETE #include <string.h> | |
| 88 | // OBSOLETE #include <signal.h> | |
| 89 | // OBSOLETE #include <sparclite.h> | |
| 90 | // OBSOLETE | |
| 91 | // OBSOLETE /************************************************************************ | |
| 92 | // OBSOLETE * | |
| 93 | // OBSOLETE * external low-level support routines | |
| 94 | // OBSOLETE */ | |
| 95 | // OBSOLETE | |
| 96 | // OBSOLETE extern void putDebugChar (int c); /* write a single character */ | |
| 97 | // OBSOLETE extern int getDebugChar (void); /* read and return a single char */ | |
| 98 | // OBSOLETE | |
| 99 | // OBSOLETE /************************************************************************/ | |
| 100 | // OBSOLETE /* BUFMAX defines the maximum number of characters in inbound/outbound buffers*/ | |
| 101 | // OBSOLETE /* at least NUMREGBYTES*2 are needed for register packets */ | |
| 102 | // OBSOLETE #define BUFMAX 2048 | |
| 103 | // OBSOLETE | |
| 104 | // OBSOLETE static int initialized = 0; /* !0 means we've been initialized */ | |
| 105 | // OBSOLETE | |
| 106 | // OBSOLETE extern void breakinst (); | |
| 107 | // OBSOLETE static void set_mem_fault_trap (int enable); | |
| 108 | // OBSOLETE static void get_in_break_mode (void); | |
| 109 | // OBSOLETE | |
| 110 | // OBSOLETE static const char hexchars[]="0123456789abcdef"; | |
| 111 | // OBSOLETE | |
| 112 | // OBSOLETE #define NUMREGS 80 | |
| 113 | // OBSOLETE | |
| 114 | // OBSOLETE /* Number of bytes of registers. */ | |
| 115 | // OBSOLETE #define NUMREGBYTES (NUMREGS * 4) | |
| 116 | // OBSOLETE enum regnames {G0, G1, G2, G3, G4, G5, G6, G7, | |
| 117 | // OBSOLETE O0, O1, O2, O3, O4, O5, SP, O7, | |
| 118 | // OBSOLETE L0, L1, L2, L3, L4, L5, L6, L7, | |
| 119 | // OBSOLETE I0, I1, I2, I3, I4, I5, FP, I7, | |
| 120 | // OBSOLETE | |
| 121 | // OBSOLETE F0, F1, F2, F3, F4, F5, F6, F7, | |
| 122 | // OBSOLETE F8, F9, F10, F11, F12, F13, F14, F15, | |
| 123 | // OBSOLETE F16, F17, F18, F19, F20, F21, F22, F23, | |
| 124 | // OBSOLETE F24, F25, F26, F27, F28, F29, F30, F31, | |
| 125 | // OBSOLETE Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR, | |
| 126 | // OBSOLETE DIA1, DIA2, DDA1, DDA2, DDV1, DDV2, DCR, DSR }; | |
| 127 | // OBSOLETE | |
| 128 | // OBSOLETE /*************************** ASSEMBLY CODE MACROS *************************/ | |
| 129 | // OBSOLETE /* */ | |
| 130 | // OBSOLETE | |
| 131 | // OBSOLETE extern void trap_low(); | |
| 132 | // OBSOLETE | |
| 133 | // OBSOLETE /* Create private copies of common functions used by the stub. This prevents | |
| 134 | // OBSOLETE nasty interactions between app code and the stub (for instance if user steps | |
| 135 | // OBSOLETE into strlen, etc..) */ | |
| 136 | // OBSOLETE | |
| 137 | // OBSOLETE static char * | |
| 138 | // OBSOLETE strcpy (char *dst, const char *src) | |
| 139 | // OBSOLETE { | |
| 140 | // OBSOLETE char *retval = dst; | |
| 141 | // OBSOLETE | |
| 142 | // OBSOLETE while ((*dst++ = *src++) != '\000'); | |
| 143 | // OBSOLETE | |
| 144 | // OBSOLETE return retval; | |
| 145 | // OBSOLETE } | |
| 146 | // OBSOLETE | |
| 147 | // OBSOLETE static void * | |
| 148 | // OBSOLETE memcpy (void *vdst, const void *vsrc, int n) | |
| 149 | // OBSOLETE { | |
| 150 | // OBSOLETE char *dst = vdst; | |
| 151 | // OBSOLETE const char *src = vsrc; | |
| 152 | // OBSOLETE char *retval = dst; | |
| 153 | // OBSOLETE | |
| 154 | // OBSOLETE while (n-- > 0) | |
| 155 | // OBSOLETE *dst++ = *src++; | |
| 156 | // OBSOLETE | |
| 157 | // OBSOLETE return retval; | |
| 158 | // OBSOLETE } | |
| 159 | // OBSOLETE | |
| 160 | // OBSOLETE asm(" | |
| 161 | // OBSOLETE .reserve trapstack, 1000 * 4, \"bss\", 8 | |
| 162 | // OBSOLETE | |
| 163 | // OBSOLETE .data | |
| 164 | // OBSOLETE .align 4 | |
| 165 | // OBSOLETE | |
| 166 | // OBSOLETE in_trap_handler: | |
| 167 | // OBSOLETE .word 0 | |
| 168 | // OBSOLETE | |
| 169 | // OBSOLETE .text | |
| 170 | // OBSOLETE .align 4 | |
| 171 | // OBSOLETE | |
| 172 | // OBSOLETE ! This function is called when any SPARC trap (except window overflow or | |
| 173 | // OBSOLETE ! underflow) occurs. It makes sure that the invalid register window is still | |
| 174 | // OBSOLETE ! available before jumping into C code. It will also restore the world if you | |
| 175 | // OBSOLETE ! return from handle_exception. | |
| 176 | // OBSOLETE ! | |
| 177 | // OBSOLETE ! On entry, trap_low expects l1 and l2 to contain pc and npc respectivly. | |
| 178 | // OBSOLETE ! Register usage throughout the routine is as follows: | |
| 179 | // OBSOLETE ! | |
| 180 | // OBSOLETE ! l0 - psr | |
| 181 | // OBSOLETE ! l1 - pc | |
| 182 | // OBSOLETE ! l2 - npc | |
| 183 | // OBSOLETE ! l3 - wim | |
| 184 | // OBSOLETE ! l4 - scratch and y reg | |
| 185 | // OBSOLETE ! l5 - scratch and tbr | |
| 186 | // OBSOLETE ! l6 - unused | |
| 187 | // OBSOLETE ! l7 - unused | |
| 188 | // OBSOLETE | |
| 189 | // OBSOLETE .globl _trap_low | |
| 190 | // OBSOLETE _trap_low: | |
| 191 | // OBSOLETE mov %psr, %l0 | |
| 192 | // OBSOLETE mov %wim, %l3 | |
| 193 | // OBSOLETE | |
| 194 | // OBSOLETE srl %l3, %l0, %l4 ! wim >> cwp | |
| 195 | // OBSOLETE cmp %l4, 1 | |
| 196 | // OBSOLETE bne window_fine ! Branch if not in the invalid window | |
| 197 | // OBSOLETE nop | |
| 198 | // OBSOLETE | |
| 199 | // OBSOLETE ! Handle window overflow | |
| 200 | // OBSOLETE | |
| 201 | // OBSOLETE mov %g1, %l4 ! Save g1, we use it to hold the wim | |
| 202 | // OBSOLETE srl %l3, 1, %g1 ! Rotate wim right | |
| 203 | // OBSOLETE tst %g1 | |
| 204 | // OBSOLETE bg good_wim ! Branch if new wim is non-zero | |
| 205 | // OBSOLETE nop | |
| 206 | // OBSOLETE | |
| 207 | // OBSOLETE ! At this point, we need to bring a 1 into the high order bit of the wim. | |
| 208 | // OBSOLETE ! Since we don't want to make any assumptions about the number of register | |
| 209 | // OBSOLETE ! windows, we figure it out dynamically so as to setup the wim correctly. | |
| 210 | // OBSOLETE | |
| 211 | // OBSOLETE not %g1 ! Fill g1 with ones | |
| 212 | // OBSOLETE mov %g1, %wim ! Fill the wim with ones | |
| 213 | // OBSOLETE nop | |
| 214 | // OBSOLETE nop | |
| 215 | // OBSOLETE nop | |
| 216 | // OBSOLETE mov %wim, %g1 ! Read back the wim | |
| 217 | // OBSOLETE inc %g1 ! Now g1 has 1 just to left of wim | |
| 218 | // OBSOLETE srl %g1, 1, %g1 ! Now put 1 at top of wim | |
| 219 | // OBSOLETE mov %g0, %wim ! Clear wim so that subsequent save | |
| 220 | // OBSOLETE nop ! won't trap | |
| 221 | // OBSOLETE nop | |
| 222 | // OBSOLETE nop | |
| 223 | // OBSOLETE | |
| 224 | // OBSOLETE good_wim: | |
| 225 | // OBSOLETE save %g0, %g0, %g0 ! Slip into next window | |
| 226 | // OBSOLETE mov %g1, %wim ! Install the new wim | |
| 227 | // OBSOLETE | |
| 228 | // OBSOLETE std %l0, [%sp + 0 * 4] ! save L & I registers | |
| 229 | // OBSOLETE std %l2, [%sp + 2 * 4] | |
| 230 | // OBSOLETE std %l4, [%sp + 4 * 4] | |
| 231 | // OBSOLETE std %l6, [%sp + 6 * 4] | |
| 232 | // OBSOLETE | |
| 233 | // OBSOLETE std %i0, [%sp + 8 * 4] | |
| 234 | // OBSOLETE std %i2, [%sp + 10 * 4] | |
| 235 | // OBSOLETE std %i4, [%sp + 12 * 4] | |
| 236 | // OBSOLETE std %i6, [%sp + 14 * 4] | |
| 237 | // OBSOLETE | |
| 238 | // OBSOLETE restore ! Go back to trap window. | |
| 239 | // OBSOLETE mov %l4, %g1 ! Restore %g1 | |
| 240 | // OBSOLETE | |
| 241 | // OBSOLETE window_fine: | |
| 242 | // OBSOLETE sethi %hi(in_trap_handler), %l4 | |
| 243 | // OBSOLETE ld [%lo(in_trap_handler) + %l4], %l5 | |
| 244 | // OBSOLETE tst %l5 | |
| 245 | // OBSOLETE bg recursive_trap | |
| 246 | // OBSOLETE inc %l5 | |
| 247 | // OBSOLETE | |
| 248 | // OBSOLETE set trapstack+1000*4, %sp ! Switch to trap stack | |
| 249 | // OBSOLETE | |
| 250 | // OBSOLETE recursive_trap: | |
| 251 | // OBSOLETE st %l5, [%lo(in_trap_handler) + %l4] | |
| 252 | // OBSOLETE sub %sp,(16+1+6+1+80)*4,%sp ! Make room for input & locals | |
| 253 | // OBSOLETE ! + hidden arg + arg spill | |
| 254 | // OBSOLETE ! + doubleword alignment | |
| 255 | // OBSOLETE ! + registers[72] local var | |
| 256 | // OBSOLETE | |
| 257 | // OBSOLETE std %g0, [%sp + (24 + 0) * 4] ! registers[Gx] | |
| 258 | // OBSOLETE std %g2, [%sp + (24 + 2) * 4] | |
| 259 | // OBSOLETE std %g4, [%sp + (24 + 4) * 4] | |
| 260 | // OBSOLETE std %g6, [%sp + (24 + 6) * 4] | |
| 261 | // OBSOLETE | |
| 262 | // OBSOLETE std %i0, [%sp + (24 + 8) * 4] ! registers[Ox] | |
| 263 | // OBSOLETE std %i2, [%sp + (24 + 10) * 4] | |
| 264 | // OBSOLETE std %i4, [%sp + (24 + 12) * 4] | |
| 265 | // OBSOLETE std %i6, [%sp + (24 + 14) * 4] | |
| 266 | // OBSOLETE | |
| 267 | // OBSOLETE mov %y, %l4 | |
| 268 | // OBSOLETE mov %tbr, %l5 | |
| 269 | // OBSOLETE st %l4, [%sp + (24 + 64) * 4] ! Y | |
| 270 | // OBSOLETE st %l0, [%sp + (24 + 65) * 4] ! PSR | |
| 271 | // OBSOLETE st %l3, [%sp + (24 + 66) * 4] ! WIM | |
| 272 | // OBSOLETE st %l5, [%sp + (24 + 67) * 4] ! TBR | |
| 273 | // OBSOLETE st %l1, [%sp + (24 + 68) * 4] ! PC | |
| 274 | // OBSOLETE st %l2, [%sp + (24 + 69) * 4] ! NPC | |
| 275 | // OBSOLETE | |
| 276 | // OBSOLETE or %l0, 0xf20, %l4 | |
| 277 | // OBSOLETE mov %l4, %psr ! Turn on traps, disable interrupts | |
| 278 | // OBSOLETE | |
| 279 | // OBSOLETE set 0x1000, %l1 | |
| 280 | // OBSOLETE btst %l1, %l0 ! FP enabled? | |
| 281 | // OBSOLETE be no_fpstore | |
| 282 | // OBSOLETE nop | |
| 283 | // OBSOLETE | |
| 284 | // OBSOLETE ! Must save fsr first, to flush the FQ. This may cause a deferred fp trap, so | |
| 285 | // OBSOLETE ! traps must be enabled to allow the trap handler to clean things up. | |
| 286 | // OBSOLETE | |
| 287 | // OBSOLETE st %fsr, [%sp + (24 + 70) * 4] | |
| 288 | // OBSOLETE | |
| 289 | // OBSOLETE std %f0, [%sp + (24 + 32) * 4] | |
| 290 | // OBSOLETE std %f2, [%sp + (24 + 34) * 4] | |
| 291 | // OBSOLETE std %f4, [%sp + (24 + 36) * 4] | |
| 292 | // OBSOLETE std %f6, [%sp + (24 + 38) * 4] | |
| 293 | // OBSOLETE std %f8, [%sp + (24 + 40) * 4] | |
| 294 | // OBSOLETE std %f10, [%sp + (24 + 42) * 4] | |
| 295 | // OBSOLETE std %f12, [%sp + (24 + 44) * 4] | |
| 296 | // OBSOLETE std %f14, [%sp + (24 + 46) * 4] | |
| 297 | // OBSOLETE std %f16, [%sp + (24 + 48) * 4] | |
| 298 | // OBSOLETE std %f18, [%sp + (24 + 50) * 4] | |
| 299 | // OBSOLETE std %f20, [%sp + (24 + 52) * 4] | |
| 300 | // OBSOLETE std %f22, [%sp + (24 + 54) * 4] | |
| 301 | // OBSOLETE std %f24, [%sp + (24 + 56) * 4] | |
| 302 | // OBSOLETE std %f26, [%sp + (24 + 58) * 4] | |
| 303 | // OBSOLETE std %f28, [%sp + (24 + 60) * 4] | |
| 304 | // OBSOLETE std %f30, [%sp + (24 + 62) * 4] | |
| 305 | // OBSOLETE no_fpstore: | |
| 306 | // OBSOLETE | |
| 307 | // OBSOLETE call _handle_exception | |
| 308 | // OBSOLETE add %sp, 24 * 4, %o0 ! Pass address of registers | |
| 309 | // OBSOLETE | |
| 310 | // OBSOLETE ! Reload all of the registers that aren't on the stack | |
| 311 | // OBSOLETE | |
| 312 | // OBSOLETE ld [%sp + (24 + 1) * 4], %g1 ! registers[Gx] | |
| 313 | // OBSOLETE ldd [%sp + (24 + 2) * 4], %g2 | |
| 314 | // OBSOLETE ldd [%sp + (24 + 4) * 4], %g4 | |
| 315 | // OBSOLETE ldd [%sp + (24 + 6) * 4], %g6 | |
| 316 | // OBSOLETE | |
| 317 | // OBSOLETE ldd [%sp + (24 + 8) * 4], %i0 ! registers[Ox] | |
| 318 | // OBSOLETE ldd [%sp + (24 + 10) * 4], %i2 | |
| 319 | // OBSOLETE ldd [%sp + (24 + 12) * 4], %i4 | |
| 320 | // OBSOLETE ldd [%sp + (24 + 14) * 4], %i6 | |
| 321 | // OBSOLETE | |
| 322 | // OBSOLETE | |
| 323 | // OBSOLETE ldd [%sp + (24 + 64) * 4], %l0 ! Y & PSR | |
| 324 | // OBSOLETE ldd [%sp + (24 + 68) * 4], %l2 ! PC & NPC | |
| 325 | // OBSOLETE | |
| 326 | // OBSOLETE set 0x1000, %l5 | |
| 327 | // OBSOLETE btst %l5, %l1 ! FP enabled? | |
| 328 | // OBSOLETE be no_fpreload | |
| 329 | // OBSOLETE nop | |
| 330 | // OBSOLETE | |
| 331 | // OBSOLETE ldd [%sp + (24 + 32) * 4], %f0 | |
| 332 | // OBSOLETE ldd [%sp + (24 + 34) * 4], %f2 | |
| 333 | // OBSOLETE ldd [%sp + (24 + 36) * 4], %f4 | |
| 334 | // OBSOLETE ldd [%sp + (24 + 38) * 4], %f6 | |
| 335 | // OBSOLETE ldd [%sp + (24 + 40) * 4], %f8 | |
| 336 | // OBSOLETE ldd [%sp + (24 + 42) * 4], %f10 | |
| 337 | // OBSOLETE ldd [%sp + (24 + 44) * 4], %f12 | |
| 338 | // OBSOLETE ldd [%sp + (24 + 46) * 4], %f14 | |
| 339 | // OBSOLETE ldd [%sp + (24 + 48) * 4], %f16 | |
| 340 | // OBSOLETE ldd [%sp + (24 + 50) * 4], %f18 | |
| 341 | // OBSOLETE ldd [%sp + (24 + 52) * 4], %f20 | |
| 342 | // OBSOLETE ldd [%sp + (24 + 54) * 4], %f22 | |
| 343 | // OBSOLETE ldd [%sp + (24 + 56) * 4], %f24 | |
| 344 | // OBSOLETE ldd [%sp + (24 + 58) * 4], %f26 | |
| 345 | // OBSOLETE ldd [%sp + (24 + 60) * 4], %f28 | |
| 346 | // OBSOLETE ldd [%sp + (24 + 62) * 4], %f30 | |
| 347 | // OBSOLETE | |
| 348 | // OBSOLETE ld [%sp + (24 + 70) * 4], %fsr | |
| 349 | // OBSOLETE no_fpreload: | |
| 350 | // OBSOLETE | |
| 351 | // OBSOLETE restore ! Ensure that previous window is valid | |
| 352 | // OBSOLETE save %g0, %g0, %g0 ! by causing a window_underflow trap | |
| 353 | // OBSOLETE | |
| 354 | // OBSOLETE mov %l0, %y | |
| 355 | // OBSOLETE mov %l1, %psr ! Make sure that traps are disabled | |
| 356 | // OBSOLETE ! for rett | |
| 357 | // OBSOLETE sethi %hi(in_trap_handler), %l4 | |
| 358 | // OBSOLETE ld [%lo(in_trap_handler) + %l4], %l5 | |
| 359 | // OBSOLETE dec %l5 | |
| 360 | // OBSOLETE st %l5, [%lo(in_trap_handler) + %l4] | |
| 361 | // OBSOLETE | |
| 362 | // OBSOLETE jmpl %l2, %g0 ! Restore old PC | |
| 363 | // OBSOLETE rett %l3 ! Restore old nPC | |
| 364 | // OBSOLETE "); | |
| 365 | // OBSOLETE | |
| 366 | // OBSOLETE /* Convert ch from a hex digit to an int */ | |
| 367 | // OBSOLETE | |
| 368 | // OBSOLETE static int | |
| 369 | // OBSOLETE hex (unsigned char ch) | |
| 370 | // OBSOLETE { | |
| 371 | // OBSOLETE if (ch >= 'a' && ch <= 'f') | |
| 372 | // OBSOLETE return ch-'a'+10; | |
| 373 | // OBSOLETE if (ch >= '0' && ch <= '9') | |
| 374 | // OBSOLETE return ch-'0'; | |
| 375 | // OBSOLETE if (ch >= 'A' && ch <= 'F') | |
| 376 | // OBSOLETE return ch-'A'+10; | |
| 377 | // OBSOLETE return -1; | |
| 378 | // OBSOLETE } | |
| 379 | // OBSOLETE | |
| 380 | // OBSOLETE static char remcomInBuffer[BUFMAX]; | |
| 381 | // OBSOLETE static char remcomOutBuffer[BUFMAX]; | |
| 382 | // OBSOLETE | |
| 383 | // OBSOLETE /* scan for the sequence $<data>#<checksum> */ | |
| 384 | // OBSOLETE | |
| 385 | // OBSOLETE unsigned char * | |
| 386 | // OBSOLETE getpacket (void) | |
| 387 | // OBSOLETE { | |
| 388 | // OBSOLETE unsigned char *buffer = &remcomInBuffer[0]; | |
| 389 | // OBSOLETE unsigned char checksum; | |
| 390 | // OBSOLETE unsigned char xmitcsum; | |
| 391 | // OBSOLETE int count; | |
| 392 | // OBSOLETE char ch; | |
| 393 | // OBSOLETE | |
| 394 | // OBSOLETE while (1) | |
| 395 | // OBSOLETE { | |
| 396 | // OBSOLETE /* wait around for the start character, ignore all other characters */ | |
| 397 | // OBSOLETE while ((ch = getDebugChar ()) != '$') | |
| 398 | // OBSOLETE ; | |
| 399 | // OBSOLETE | |
| 400 | // OBSOLETE retry: | |
| 401 | // OBSOLETE checksum = 0; | |
| 402 | // OBSOLETE xmitcsum = -1; | |
| 403 | // OBSOLETE count = 0; | |
| 404 | // OBSOLETE | |
| 405 | // OBSOLETE /* now, read until a # or end of buffer is found */ | |
| 406 | // OBSOLETE while (count < BUFMAX) | |
| 407 | // OBSOLETE { | |
| 408 | // OBSOLETE ch = getDebugChar (); | |
| 409 | // OBSOLETE if (ch == '$') | |
| 410 | // OBSOLETE goto retry; | |
| 411 | // OBSOLETE if (ch == '#') | |
| 412 | // OBSOLETE break; | |
| 413 | // OBSOLETE checksum = checksum + ch; | |
| 414 | // OBSOLETE buffer[count] = ch; | |
| 415 | // OBSOLETE count = count + 1; | |
| 416 | // OBSOLETE } | |
| 417 | // OBSOLETE buffer[count] = 0; | |
| 418 | // OBSOLETE | |
| 419 | // OBSOLETE if (ch == '#') | |
| 420 | // OBSOLETE { | |
| 421 | // OBSOLETE ch = getDebugChar (); | |
| 422 | // OBSOLETE xmitcsum = hex (ch) << 4; | |
| 423 | // OBSOLETE ch = getDebugChar (); | |
| 424 | // OBSOLETE xmitcsum += hex (ch); | |
| 425 | // OBSOLETE | |
| 426 | // OBSOLETE if (checksum != xmitcsum) | |
| 427 | // OBSOLETE { | |
| 428 | // OBSOLETE putDebugChar ('-'); /* failed checksum */ | |
| 429 | // OBSOLETE } | |
| 430 | // OBSOLETE else | |
| 431 | // OBSOLETE { | |
| 432 | // OBSOLETE putDebugChar ('+'); /* successful transfer */ | |
| 433 | // OBSOLETE | |
| 434 | // OBSOLETE /* if a sequence char is present, reply the sequence ID */ | |
| 435 | // OBSOLETE if (buffer[2] == ':') | |
| 436 | // OBSOLETE { | |
| 437 | // OBSOLETE putDebugChar (buffer[0]); | |
| 438 | // OBSOLETE putDebugChar (buffer[1]); | |
| 439 | // OBSOLETE | |
| 440 | // OBSOLETE return &buffer[3]; | |
| 441 | // OBSOLETE } | |
| 442 | // OBSOLETE | |
| 443 | // OBSOLETE return &buffer[0]; | |
| 444 | // OBSOLETE } | |
| 445 | // OBSOLETE } | |
| 446 | // OBSOLETE } | |
| 447 | // OBSOLETE } | |
| 448 | // OBSOLETE | |
| 449 | // OBSOLETE /* send the packet in buffer. */ | |
| 450 | // OBSOLETE | |
| 451 | // OBSOLETE static void | |
| 452 | // OBSOLETE putpacket (unsigned char *buffer) | |
| 453 | // OBSOLETE { | |
| 454 | // OBSOLETE unsigned char checksum; | |
| 455 | // OBSOLETE int count; | |
| 456 | // OBSOLETE unsigned char ch; | |
| 457 | // OBSOLETE | |
| 458 | // OBSOLETE /* $<packet info>#<checksum>. */ | |
| 459 | // OBSOLETE do | |
| 460 | // OBSOLETE { | |
| 461 | // OBSOLETE putDebugChar('$'); | |
| 462 | // OBSOLETE checksum = 0; | |
| 463 | // OBSOLETE count = 0; | |
| 464 | // OBSOLETE | |
| 465 | // OBSOLETE while (ch = buffer[count]) | |
| 466 | // OBSOLETE { | |
| 467 | // OBSOLETE putDebugChar (ch); | |
| 468 | // OBSOLETE checksum += ch; | |
| 469 | // OBSOLETE count += 1; | |
| 470 | // OBSOLETE } | |
| 471 | // OBSOLETE | |
| 472 | // OBSOLETE putDebugChar('#'); | |
| 473 | // OBSOLETE putDebugChar(hexchars[checksum >> 4]); | |
| 474 | // OBSOLETE putDebugChar(hexchars[checksum & 0xf]); | |
| 475 | // OBSOLETE | |
| 476 | // OBSOLETE } | |
| 477 | // OBSOLETE while (getDebugChar() != '+'); | |
| 478 | // OBSOLETE } | |
| 479 | // OBSOLETE | |
| 480 | // OBSOLETE /* Indicate to caller of mem2hex or hex2mem that there has been an | |
| 481 | // OBSOLETE error. */ | |
| 482 | // OBSOLETE static volatile int mem_err = 0; | |
| 483 | // OBSOLETE | |
| 484 | // OBSOLETE /* Convert the memory pointed to by mem into hex, placing result in buf. | |
| 485 | // OBSOLETE * Return a pointer to the last char put in buf (null), in case of mem fault, | |
| 486 | // OBSOLETE * return 0. | |
| 487 | // OBSOLETE * If MAY_FAULT is non-zero, then we will handle memory faults by returning | |
| 488 | // OBSOLETE * a 0, else treat a fault like any other fault in the stub. | |
| 489 | // OBSOLETE */ | |
| 490 | // OBSOLETE | |
| 491 | // OBSOLETE static unsigned char * | |
| 492 | // OBSOLETE mem2hex (unsigned char *mem, unsigned char *buf, int count, int may_fault) | |
| 493 | // OBSOLETE { | |
| 494 | // OBSOLETE unsigned char ch; | |
| 495 | // OBSOLETE | |
| 496 | // OBSOLETE set_mem_fault_trap(may_fault); | |
| 497 | // OBSOLETE | |
| 498 | // OBSOLETE while (count-- > 0) | |
| 499 | // OBSOLETE { | |
| 500 | // OBSOLETE ch = *mem++; | |
| 501 | // OBSOLETE if (mem_err) | |
| 502 | // OBSOLETE return 0; | |
| 503 | // OBSOLETE *buf++ = hexchars[ch >> 4]; | |
| 504 | // OBSOLETE *buf++ = hexchars[ch & 0xf]; | |
| 505 | // OBSOLETE } | |
| 506 | // OBSOLETE | |
| 507 | // OBSOLETE *buf = 0; | |
| 508 | // OBSOLETE | |
| 509 | // OBSOLETE set_mem_fault_trap(0); | |
| 510 | // OBSOLETE | |
| 511 | // OBSOLETE return buf; | |
| 512 | // OBSOLETE } | |
| 513 | // OBSOLETE | |
| 514 | // OBSOLETE /* convert the hex array pointed to by buf into binary to be placed in mem | |
| 515 | // OBSOLETE * return a pointer to the character AFTER the last byte written */ | |
| 516 | // OBSOLETE | |
| 517 | // OBSOLETE static char * | |
| 518 | // OBSOLETE hex2mem (unsigned char *buf, unsigned char *mem, int count, int may_fault) | |
| 519 | // OBSOLETE { | |
| 520 | // OBSOLETE int i; | |
| 521 | // OBSOLETE unsigned char ch; | |
| 522 | // OBSOLETE | |
| 523 | // OBSOLETE set_mem_fault_trap(may_fault); | |
| 524 | // OBSOLETE | |
| 525 | // OBSOLETE for (i=0; i<count; i++) | |
| 526 | // OBSOLETE { | |
| 527 | // OBSOLETE ch = hex(*buf++) << 4; | |
| 528 | // OBSOLETE ch |= hex(*buf++); | |
| 529 | // OBSOLETE *mem++ = ch; | |
| 530 | // OBSOLETE if (mem_err) | |
| 531 | // OBSOLETE return 0; | |
| 532 | // OBSOLETE } | |
| 533 | // OBSOLETE | |
| 534 | // OBSOLETE set_mem_fault_trap(0); | |
| 535 | // OBSOLETE | |
| 536 | // OBSOLETE return mem; | |
| 537 | // OBSOLETE } | |
| 538 | // OBSOLETE | |
| 539 | // OBSOLETE /* This table contains the mapping between SPARC hardware trap types, and | |
| 540 | // OBSOLETE signals, which are primarily what GDB understands. It also indicates | |
| 541 | // OBSOLETE which hardware traps we need to commandeer when initializing the stub. */ | |
| 542 | // OBSOLETE | |
| 543 | // OBSOLETE static struct hard_trap_info | |
| 544 | // OBSOLETE { | |
| 545 | // OBSOLETE unsigned char tt; /* Trap type code for SPARClite */ | |
| 546 | // OBSOLETE unsigned char signo; /* Signal that we map this trap into */ | |
| 547 | // OBSOLETE } hard_trap_info[] = { | |
| 548 | // OBSOLETE {0x01, SIGSEGV}, /* instruction access error */ | |
| 549 | // OBSOLETE {0x02, SIGILL}, /* privileged instruction */ | |
| 550 | // OBSOLETE {0x03, SIGILL}, /* illegal instruction */ | |
| 551 | // OBSOLETE {0x04, SIGEMT}, /* fp disabled */ | |
| 552 | // OBSOLETE {0x07, SIGBUS}, /* mem address not aligned */ | |
| 553 | // OBSOLETE {0x09, SIGSEGV}, /* data access exception */ | |
| 554 | // OBSOLETE {0x0a, SIGEMT}, /* tag overflow */ | |
| 555 | // OBSOLETE {0x20, SIGBUS}, /* r register access error */ | |
| 556 | // OBSOLETE {0x21, SIGBUS}, /* instruction access error */ | |
| 557 | // OBSOLETE {0x24, SIGEMT}, /* cp disabled */ | |
| 558 | // OBSOLETE {0x29, SIGBUS}, /* data access error */ | |
| 559 | // OBSOLETE {0x2a, SIGFPE}, /* divide by zero */ | |
| 560 | // OBSOLETE {0x2b, SIGBUS}, /* data store error */ | |
| 561 | // OBSOLETE {0x80+1, SIGTRAP}, /* ta 1 - normal breakpoint instruction */ | |
| 562 | // OBSOLETE {0xff, SIGTRAP}, /* hardware breakpoint */ | |
| 563 | // OBSOLETE {0, 0} /* Must be last */ | |
| 564 | // OBSOLETE }; | |
| 565 | // OBSOLETE | |
| 566 | // OBSOLETE /* Set up exception handlers for tracing and breakpoints */ | |
| 567 | // OBSOLETE | |
| 568 | // OBSOLETE void | |
| 569 | // OBSOLETE set_debug_traps (void) | |
| 570 | // OBSOLETE { | |
| 571 | // OBSOLETE struct hard_trap_info *ht; | |
| 572 | // OBSOLETE | |
| 573 | // OBSOLETE /* Only setup fp traps if the FP is disabled. */ | |
| 574 | // OBSOLETE | |
| 575 | // OBSOLETE for (ht = hard_trap_info; | |
| 576 | // OBSOLETE ht->tt != 0 && ht->signo != 0; | |
| 577 | // OBSOLETE ht++) | |
| 578 | // OBSOLETE if (ht->tt != 4 || ! (read_psr () & 0x1000)) | |
| 579 | // OBSOLETE exceptionHandler(ht->tt, trap_low); | |
| 580 | // OBSOLETE | |
| 581 | // OBSOLETE initialized = 1; | |
| 582 | // OBSOLETE } | |
| 583 | // OBSOLETE | |
| 584 | // OBSOLETE asm (" | |
| 585 | // OBSOLETE ! Trap handler for memory errors. This just sets mem_err to be non-zero. It | |
| 586 | // OBSOLETE ! assumes that %l1 is non-zero. This should be safe, as it is doubtful that | |
| 587 | // OBSOLETE ! 0 would ever contain code that could mem fault. This routine will skip | |
| 588 | // OBSOLETE ! past the faulting instruction after setting mem_err. | |
| 589 | // OBSOLETE | |
| 590 | // OBSOLETE .text | |
| 591 | // OBSOLETE .align 4 | |
| 592 | // OBSOLETE | |
| 593 | // OBSOLETE _fltr_set_mem_err: | |
| 594 | // OBSOLETE sethi %hi(_mem_err), %l0 | |
| 595 | // OBSOLETE st %l1, [%l0 + %lo(_mem_err)] | |
| 596 | // OBSOLETE jmpl %l2, %g0 | |
| 597 | // OBSOLETE rett %l2+4 | |
| 598 | // OBSOLETE "); | |
| 599 | // OBSOLETE | |
| 600 | // OBSOLETE static void | |
| 601 | // OBSOLETE set_mem_fault_trap (int enable) | |
| 602 | // OBSOLETE { | |
| 603 | // OBSOLETE extern void fltr_set_mem_err(); | |
| 604 | // OBSOLETE mem_err = 0; | |
| 605 | // OBSOLETE | |
| 606 | // OBSOLETE if (enable) | |
| 607 | // OBSOLETE exceptionHandler(9, fltr_set_mem_err); | |
| 608 | // OBSOLETE else | |
| 609 | // OBSOLETE exceptionHandler(9, trap_low); | |
| 610 | // OBSOLETE } | |
| 611 | // OBSOLETE | |
| 612 | // OBSOLETE asm (" | |
| 613 | // OBSOLETE .text | |
| 614 | // OBSOLETE .align 4 | |
| 615 | // OBSOLETE | |
| 616 | // OBSOLETE _dummy_hw_breakpoint: | |
| 617 | // OBSOLETE jmpl %l2, %g0 | |
| 618 | // OBSOLETE rett %l2+4 | |
| 619 | // OBSOLETE nop | |
| 620 | // OBSOLETE nop | |
| 621 | // OBSOLETE "); | |
| 622 | // OBSOLETE | |
| 623 | // OBSOLETE static void | |
| 624 | // OBSOLETE get_in_break_mode (void) | |
| 625 | // OBSOLETE { | |
| 626 | // OBSOLETE extern void dummy_hw_breakpoint(); | |
| 627 | // OBSOLETE | |
| 628 | // OBSOLETE exceptionHandler (255, dummy_hw_breakpoint); | |
| 629 | // OBSOLETE | |
| 630 | // OBSOLETE asm ("ta 255"); | |
| 631 | // OBSOLETE | |
| 632 | // OBSOLETE exceptionHandler (255, trap_low); | |
| 633 | // OBSOLETE } | |
| 634 | // OBSOLETE | |
| 635 | // OBSOLETE /* Convert the SPARC hardware trap type code to a unix signal number. */ | |
| 636 | // OBSOLETE | |
| 637 | // OBSOLETE static int | |
| 638 | // OBSOLETE computeSignal (int tt) | |
| 639 | // OBSOLETE { | |
| 640 | // OBSOLETE struct hard_trap_info *ht; | |
| 641 | // OBSOLETE | |
| 642 | // OBSOLETE for (ht = hard_trap_info; ht->tt && ht->signo; ht++) | |
| 643 | // OBSOLETE if (ht->tt == tt) | |
| 644 | // OBSOLETE return ht->signo; | |
| 645 | // OBSOLETE | |
| 646 | // OBSOLETE return SIGHUP; /* default for things we don't know about */ | |
| 647 | // OBSOLETE } | |
| 648 | // OBSOLETE | |
| 649 | // OBSOLETE /* | |
| 650 | // OBSOLETE * While we find nice hex chars, build an int. | |
| 651 | // OBSOLETE * Return number of chars processed. | |
| 652 | // OBSOLETE */ | |
| 653 | // OBSOLETE | |
| 654 | // OBSOLETE static int | |
| 655 | // OBSOLETE hexToInt(char **ptr, int *intValue) | |
| 656 | // OBSOLETE { | |
| 657 | // OBSOLETE int numChars = 0; | |
| 658 | // OBSOLETE int hexValue; | |
| 659 | // OBSOLETE | |
| 660 | // OBSOLETE *intValue = 0; | |
| 661 | // OBSOLETE | |
| 662 | // OBSOLETE while (**ptr) | |
| 663 | // OBSOLETE { | |
| 664 | // OBSOLETE hexValue = hex(**ptr); | |
| 665 | // OBSOLETE if (hexValue < 0) | |
| 666 | // OBSOLETE break; | |
| 667 | // OBSOLETE | |
| 668 | // OBSOLETE *intValue = (*intValue << 4) | hexValue; | |
| 669 | // OBSOLETE numChars ++; | |
| 670 | // OBSOLETE | |
| 671 | // OBSOLETE (*ptr)++; | |
| 672 | // OBSOLETE } | |
| 673 | // OBSOLETE | |
| 674 | // OBSOLETE return (numChars); | |
| 675 | // OBSOLETE } | |
| 676 | // OBSOLETE | |
| 677 | // OBSOLETE /* | |
| 678 | // OBSOLETE * This function does all command procesing for interfacing to gdb. It | |
| 679 | // OBSOLETE * returns 1 if you should skip the instruction at the trap address, 0 | |
| 680 | // OBSOLETE * otherwise. | |
| 681 | // OBSOLETE */ | |
| 682 | // OBSOLETE | |
| 683 | // OBSOLETE static void | |
| 684 | // OBSOLETE handle_exception (unsigned long *registers) | |
| 685 | // OBSOLETE { | |
| 686 | // OBSOLETE int tt; /* Trap type */ | |
| 687 | // OBSOLETE int sigval; | |
| 688 | // OBSOLETE int addr; | |
| 689 | // OBSOLETE int length; | |
| 690 | // OBSOLETE char *ptr; | |
| 691 | // OBSOLETE unsigned long *sp; | |
| 692 | // OBSOLETE unsigned long dsr; | |
| 693 | // OBSOLETE | |
| 694 | // OBSOLETE /* First, we must force all of the windows to be spilled out */ | |
| 695 | // OBSOLETE | |
| 696 | // OBSOLETE asm(" save %sp, -64, %sp | |
| 697 | // OBSOLETE save %sp, -64, %sp | |
| 698 | // OBSOLETE save %sp, -64, %sp | |
| 699 | // OBSOLETE save %sp, -64, %sp | |
| 700 | // OBSOLETE save %sp, -64, %sp | |
| 701 | // OBSOLETE save %sp, -64, %sp | |
| 702 | // OBSOLETE save %sp, -64, %sp | |
| 703 | // OBSOLETE save %sp, -64, %sp | |
| 704 | // OBSOLETE restore | |
| 705 | // OBSOLETE restore | |
| 706 | // OBSOLETE restore | |
| 707 | // OBSOLETE restore | |
| 708 | // OBSOLETE restore | |
| 709 | // OBSOLETE restore | |
| 710 | // OBSOLETE restore | |
| 711 | // OBSOLETE restore | |
| 712 | // OBSOLETE "); | |
| 713 | // OBSOLETE | |
| 714 | // OBSOLETE get_in_break_mode (); /* Enable DSU register writes */ | |
| 715 | // OBSOLETE | |
| 716 | // OBSOLETE registers[DIA1] = read_asi (1, 0xff00); | |
| 717 | // OBSOLETE registers[DIA2] = read_asi (1, 0xff04); | |
| 718 | // OBSOLETE registers[DDA1] = read_asi (1, 0xff08); | |
| 719 | // OBSOLETE registers[DDA2] = read_asi (1, 0xff0c); | |
| 720 | // OBSOLETE registers[DDV1] = read_asi (1, 0xff10); | |
| 721 | // OBSOLETE registers[DDV2] = read_asi (1, 0xff14); | |
| 722 | // OBSOLETE registers[DCR] = read_asi (1, 0xff18); | |
| 723 | // OBSOLETE registers[DSR] = read_asi (1, 0xff1c); | |
| 724 | // OBSOLETE | |
| 725 | // OBSOLETE if (registers[PC] == (unsigned long)breakinst) | |
| 726 | // OBSOLETE { | |
| 727 | // OBSOLETE registers[PC] = registers[NPC]; | |
| 728 | // OBSOLETE registers[NPC] += 4; | |
| 729 | // OBSOLETE } | |
| 730 | // OBSOLETE sp = (unsigned long *)registers[SP]; | |
| 731 | // OBSOLETE | |
| 732 | // OBSOLETE dsr = (unsigned long)registers[DSR]; | |
| 733 | // OBSOLETE if (dsr & 0x3c) | |
| 734 | // OBSOLETE tt = 255; | |
| 735 | // OBSOLETE else | |
| 736 | // OBSOLETE tt = (registers[TBR] >> 4) & 0xff; | |
| 737 | // OBSOLETE | |
| 738 | // OBSOLETE /* reply to host that an exception has occurred */ | |
| 739 | // OBSOLETE sigval = computeSignal(tt); | |
| 740 | // OBSOLETE ptr = remcomOutBuffer; | |
| 741 | // OBSOLETE | |
| 742 | // OBSOLETE *ptr++ = 'T'; | |
| 743 | // OBSOLETE *ptr++ = hexchars[sigval >> 4]; | |
| 744 | // OBSOLETE *ptr++ = hexchars[sigval & 0xf]; | |
| 745 | // OBSOLETE | |
| 746 | // OBSOLETE *ptr++ = hexchars[PC >> 4]; | |
| 747 | // OBSOLETE *ptr++ = hexchars[PC & 0xf]; | |
| 748 | // OBSOLETE *ptr++ = ':'; | |
| 749 | // OBSOLETE ptr = mem2hex((char *)®isters[PC], ptr, 4, 0); | |
| 750 | // OBSOLETE *ptr++ = ';'; | |
| 751 | // OBSOLETE | |
| 752 | // OBSOLETE *ptr++ = hexchars[FP >> 4]; | |
| 753 | // OBSOLETE *ptr++ = hexchars[FP & 0xf]; | |
| 754 | // OBSOLETE *ptr++ = ':'; | |
| 755 | // OBSOLETE ptr = mem2hex(sp + 8 + 6, ptr, 4, 0); /* FP */ | |
| 756 | // OBSOLETE *ptr++ = ';'; | |
| 757 | // OBSOLETE | |
| 758 | // OBSOLETE *ptr++ = hexchars[SP >> 4]; | |
| 759 | // OBSOLETE *ptr++ = hexchars[SP & 0xf]; | |
| 760 | // OBSOLETE *ptr++ = ':'; | |
| 761 | // OBSOLETE ptr = mem2hex((char *)&sp, ptr, 4, 0); | |
| 762 | // OBSOLETE *ptr++ = ';'; | |
| 763 | // OBSOLETE | |
| 764 | // OBSOLETE *ptr++ = hexchars[NPC >> 4]; | |
| 765 | // OBSOLETE *ptr++ = hexchars[NPC & 0xf]; | |
| 766 | // OBSOLETE *ptr++ = ':'; | |
| 767 | // OBSOLETE ptr = mem2hex((char *)®isters[NPC], ptr, 4, 0); | |
| 768 | // OBSOLETE *ptr++ = ';'; | |
| 769 | // OBSOLETE | |
| 770 | // OBSOLETE *ptr++ = hexchars[O7 >> 4]; | |
| 771 | // OBSOLETE *ptr++ = hexchars[O7 & 0xf]; | |
| 772 | // OBSOLETE *ptr++ = ':'; | |
| 773 | // OBSOLETE ptr = mem2hex((char *)®isters[O7], ptr, 4, 0); | |
| 774 | // OBSOLETE *ptr++ = ';'; | |
| 775 | // OBSOLETE | |
| 776 | // OBSOLETE *ptr++ = 0; | |
| 777 | // OBSOLETE | |
| 778 | // OBSOLETE putpacket(remcomOutBuffer); | |
| 779 | // OBSOLETE | |
| 780 | // OBSOLETE while (1) | |
| 781 | // OBSOLETE { | |
| 782 | // OBSOLETE remcomOutBuffer[0] = 0; | |
| 783 | // OBSOLETE | |
| 784 | // OBSOLETE ptr = getpacket(); | |
| 785 | // OBSOLETE switch (*ptr++) | |
| 786 | // OBSOLETE { | |
| 787 | // OBSOLETE case '?': | |
| 788 | // OBSOLETE remcomOutBuffer[0] = 'S'; | |
| 789 | // OBSOLETE remcomOutBuffer[1] = hexchars[sigval >> 4]; | |
| 790 | // OBSOLETE remcomOutBuffer[2] = hexchars[sigval & 0xf]; | |
| 791 | // OBSOLETE remcomOutBuffer[3] = 0; | |
| 792 | // OBSOLETE break; | |
| 793 | // OBSOLETE | |
| 794 | // OBSOLETE case 'd': | |
| 795 | // OBSOLETE /* toggle debug flag */ | |
| 796 | // OBSOLETE break; | |
| 797 | // OBSOLETE | |
| 798 | // OBSOLETE case 'g': /* return the value of the CPU registers */ | |
| 799 | // OBSOLETE memcpy (®isters[L0], sp, 16 * 4); /* Copy L & I regs from stack */ | |
| 800 | // OBSOLETE mem2hex ((char *)registers, remcomOutBuffer, NUMREGBYTES, 0); | |
| 801 | // OBSOLETE break; | |
| 802 | // OBSOLETE | |
| 803 | // OBSOLETE case 'G': /* Set the value of all registers */ | |
| 804 | // OBSOLETE case 'P': /* Set the value of one register */ | |
| 805 | // OBSOLETE { | |
| 806 | // OBSOLETE unsigned long *newsp, psr; | |
| 807 | // OBSOLETE | |
| 808 | // OBSOLETE psr = registers[PSR]; | |
| 809 | // OBSOLETE | |
| 810 | // OBSOLETE if (ptr[-1] == 'P') | |
| 811 | // OBSOLETE { | |
| 812 | // OBSOLETE int regno; | |
| 813 | // OBSOLETE | |
| 814 | // OBSOLETE if (hexToInt (&ptr, ®no) | |
| 815 | // OBSOLETE && *ptr++ == '=') | |
| 816 | // OBSOLETE if (regno >= L0 && regno <= I7) | |
| 817 | // OBSOLETE hex2mem (ptr, sp + regno - L0, 4, 0); | |
| 818 | // OBSOLETE else | |
| 819 | // OBSOLETE hex2mem (ptr, (char *)®isters[regno], 4, 0); | |
| 820 | // OBSOLETE else | |
| 821 | // OBSOLETE { | |
| 822 | // OBSOLETE strcpy (remcomOutBuffer, "E01"); | |
| 823 | // OBSOLETE break; | |
| 824 | // OBSOLETE } | |
| 825 | // OBSOLETE } | |
| 826 | // OBSOLETE else | |
| 827 | // OBSOLETE { | |
| 828 | // OBSOLETE hex2mem (ptr, (char *)registers, NUMREGBYTES, 0); | |
| 829 | // OBSOLETE memcpy (sp, ®isters[L0], 16 * 4); /* Copy L & I regs to stack */ | |
| 830 | // OBSOLETE } | |
| 831 | // OBSOLETE | |
| 832 | // OBSOLETE /* See if the stack pointer has moved. If so, then copy the saved | |
| 833 | // OBSOLETE locals and ins to the new location. This keeps the window | |
| 834 | // OBSOLETE overflow and underflow routines happy. */ | |
| 835 | // OBSOLETE | |
| 836 | // OBSOLETE newsp = (unsigned long *)registers[SP]; | |
| 837 | // OBSOLETE if (sp != newsp) | |
| 838 | // OBSOLETE sp = memcpy(newsp, sp, 16 * 4); | |
| 839 | // OBSOLETE | |
| 840 | // OBSOLETE /* Don't allow CWP to be modified. */ | |
| 841 | // OBSOLETE | |
| 842 | // OBSOLETE if (psr != registers[PSR]) | |
| 843 | // OBSOLETE registers[PSR] = (psr & 0x1f) | (registers[PSR] & ~0x1f); | |
| 844 | // OBSOLETE | |
| 845 | // OBSOLETE strcpy(remcomOutBuffer,"OK"); | |
| 846 | // OBSOLETE } | |
| 847 | // OBSOLETE break; | |
| 848 | // OBSOLETE | |
| 849 | // OBSOLETE case 'm': /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */ | |
| 850 | // OBSOLETE /* Try to read %x,%x. */ | |
| 851 | // OBSOLETE | |
| 852 | // OBSOLETE if (hexToInt(&ptr, &addr) | |
| 853 | // OBSOLETE && *ptr++ == ',' | |
| 854 | // OBSOLETE && hexToInt(&ptr, &length)) | |
| 855 | // OBSOLETE { | |
| 856 | // OBSOLETE if (mem2hex((char *)addr, remcomOutBuffer, length, 1)) | |
| 857 | // OBSOLETE break; | |
| 858 | // OBSOLETE | |
| 859 | // OBSOLETE strcpy (remcomOutBuffer, "E03"); | |
| 860 | // OBSOLETE } | |
| 861 | // OBSOLETE else | |
| 862 | // OBSOLETE strcpy(remcomOutBuffer,"E01"); | |
| 863 | // OBSOLETE break; | |
| 864 | // OBSOLETE | |
| 865 | // OBSOLETE case 'M': /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */ | |
| 866 | // OBSOLETE /* Try to read '%x,%x:'. */ | |
| 867 | // OBSOLETE | |
| 868 | // OBSOLETE if (hexToInt(&ptr, &addr) | |
| 869 | // OBSOLETE && *ptr++ == ',' | |
| 870 | // OBSOLETE && hexToInt(&ptr, &length) | |
| 871 | // OBSOLETE && *ptr++ == ':') | |
| 872 | // OBSOLETE { | |
| 873 | // OBSOLETE if (hex2mem(ptr, (char *)addr, length, 1)) | |
| 874 | // OBSOLETE strcpy(remcomOutBuffer, "OK"); | |
| 875 | // OBSOLETE else | |
| 876 | // OBSOLETE strcpy(remcomOutBuffer, "E03"); | |
| 877 | // OBSOLETE } | |
| 878 | // OBSOLETE else | |
| 879 | // OBSOLETE strcpy(remcomOutBuffer, "E02"); | |
| 880 | // OBSOLETE break; | |
| 881 | // OBSOLETE | |
| 882 | // OBSOLETE case 'c': /* cAA..AA Continue at address AA..AA(optional) */ | |
| 883 | // OBSOLETE /* try to read optional parameter, pc unchanged if no parm */ | |
| 884 | // OBSOLETE if (hexToInt(&ptr, &addr)) | |
| 885 | // OBSOLETE { | |
| 886 | // OBSOLETE registers[PC] = addr; | |
| 887 | // OBSOLETE registers[NPC] = addr + 4; | |
| 888 | // OBSOLETE } | |
| 889 | // OBSOLETE | |
| 890 | // OBSOLETE /* Need to flush the instruction cache here, as we may have deposited a | |
| 891 | // OBSOLETE breakpoint, and the icache probably has no way of knowing that a data ref to | |
| 892 | // OBSOLETE some location may have changed something that is in the instruction cache. | |
| 893 | // OBSOLETE */ | |
| 894 | // OBSOLETE | |
| 895 | // OBSOLETE flush_i_cache (); | |
| 896 | // OBSOLETE | |
| 897 | // OBSOLETE if (!(registers[DSR] & 0x1) /* DSU enabled? */ | |
| 898 | // OBSOLETE && !(registers[DCR] & 0x200)) /* Are we in break state? */ | |
| 899 | // OBSOLETE { /* Yes, set the DSU regs */ | |
| 900 | // OBSOLETE write_asi (1, 0xff00, registers[DIA1]); | |
| 901 | // OBSOLETE write_asi (1, 0xff04, registers[DIA2]); | |
| 902 | // OBSOLETE write_asi (1, 0xff08, registers[DDA1]); | |
| 903 | // OBSOLETE write_asi (1, 0xff0c, registers[DDA2]); | |
| 904 | // OBSOLETE write_asi (1, 0xff10, registers[DDV1]); | |
| 905 | // OBSOLETE write_asi (1, 0xff14, registers[DDV2]); | |
| 906 | // OBSOLETE write_asi (1, 0xff1c, registers[DSR]); | |
| 907 | // OBSOLETE write_asi (1, 0xff18, registers[DCR] | 0x200); /* Clear break */ | |
| 908 | // OBSOLETE } | |
| 909 | // OBSOLETE | |
| 910 | // OBSOLETE return; | |
| 911 | // OBSOLETE | |
| 912 | // OBSOLETE /* kill the program */ | |
| 913 | // OBSOLETE case 'k' : /* do nothing */ | |
| 914 | // OBSOLETE break; | |
| 915 | // OBSOLETE #if 0 | |
| 916 | // OBSOLETE case 't': /* Test feature */ | |
| 917 | // OBSOLETE asm (" std %f30,[%sp]"); | |
| 918 | // OBSOLETE break; | |
| 919 | // OBSOLETE #endif | |
| 920 | // OBSOLETE case 'r': /* Reset */ | |
| 921 | // OBSOLETE asm ("call 0 | |
| 922 | // OBSOLETE nop "); | |
| 923 | // OBSOLETE break; | |
| 924 | // OBSOLETE } /* switch */ | |
| 925 | // OBSOLETE | |
| 926 | // OBSOLETE /* reply to the request */ | |
| 927 | // OBSOLETE putpacket(remcomOutBuffer); | |
| 928 | // OBSOLETE } | |
| 929 | // OBSOLETE } | |
| 930 | // OBSOLETE | |
| 931 | // OBSOLETE /* This function will generate a breakpoint exception. It is used at the | |
| 932 | // OBSOLETE beginning of a program to sync up with a debugger and can be used | |
| 933 | // OBSOLETE otherwise as a quick means to stop program execution and "break" into | |
| 934 | // OBSOLETE the debugger. */ | |
| 935 | // OBSOLETE | |
| 936 | // OBSOLETE void | |
| 937 | // OBSOLETE breakpoint (void) | |
| 938 | // OBSOLETE { | |
| 939 | // OBSOLETE if (!initialized) | |
| 940 | // OBSOLETE return; | |
| 941 | // OBSOLETE | |
| 942 | // OBSOLETE asm(" .globl _breakinst | |
| 943 | // OBSOLETE | |
| 944 | // OBSOLETE _breakinst: ta 1 | |
| 945 | // OBSOLETE "); | |
| 946 | // OBSOLETE } |