| 1 | /* Disassembly display. |
| 2 | Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
| 3 | Contributed by Hewlett-Packard Company. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "symtab.h" |
| 24 | #include "breakpoint.h" |
| 25 | #include "frame.h" |
| 26 | |
| 27 | #include "tui.h" |
| 28 | #include "tuiData.h" |
| 29 | #include "tuiLayout.h" |
| 30 | #include "tuiSourceWin.h" |
| 31 | #include "tuiStack.h" |
| 32 | |
| 33 | |
| 34 | /***************************************** |
| 35 | ** STATIC LOCAL FUNCTIONS FORWARD DECLS ** |
| 36 | ******************************************/ |
| 37 | |
| 38 | static struct breakpoint *_hasBreak (CORE_ADDR); |
| 39 | |
| 40 | |
| 41 | /***************************************** |
| 42 | ** PUBLIC FUNCTIONS ** |
| 43 | ******************************************/ |
| 44 | |
| 45 | /* |
| 46 | ** tuiSetDisassemContent(). |
| 47 | ** Function to set the disassembly window's content. |
| 48 | */ |
| 49 | TuiStatus |
| 50 | #ifdef __STDC__ |
| 51 | tuiSetDisassemContent ( |
| 52 | struct symtab *s, |
| 53 | Opaque startAddr) |
| 54 | #else |
| 55 | tuiSetDisassemContent (s, startAddr) |
| 56 | struct symtab *s; |
| 57 | Opaque startAddr; |
| 58 | #endif |
| 59 | { |
| 60 | TuiStatus ret = TUI_FAILURE; |
| 61 | struct ui_file *gdb_dis_out; |
| 62 | |
| 63 | if (startAddr != (Opaque) NULL) |
| 64 | { |
| 65 | register int i, desc; |
| 66 | |
| 67 | if ((ret = tuiAllocSourceBuffer (disassemWin)) == TUI_SUCCESS) |
| 68 | { |
| 69 | register int offset = disassemWin->detail.sourceInfo.horizontalOffset; |
| 70 | register int threshold, curLine = 0, lineWidth, maxLines; |
| 71 | CORE_ADDR newpc, pc; |
| 72 | disassemble_info asmInfo; |
| 73 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); |
| 74 | extern void strcat_address (CORE_ADDR, char *, int); |
| 75 | extern void strcat_address_numeric (CORE_ADDR, int, char *, int); |
| 76 | int curLen = 0; |
| 77 | int tab_len = tuiDefaultTabLen (); |
| 78 | |
| 79 | maxLines = disassemWin->generic.height - 2; /* account for hilite */ |
| 80 | lineWidth = disassemWin->generic.width - 1; |
| 81 | threshold = (lineWidth - 1) + offset; |
| 82 | |
| 83 | /* now init the ui_file structure */ |
| 84 | gdb_dis_out = tui_sfileopen (threshold); |
| 85 | |
| 86 | INIT_DISASSEMBLE_INFO_NO_ARCH (asmInfo, gdb_dis_out, (fprintf_ftype) fprintf_filtered); |
| 87 | asmInfo.read_memory_func = dis_asm_read_memory; |
| 88 | asmInfo.memory_error_func = dis_asm_memory_error; |
| 89 | |
| 90 | disassemWin->detail.sourceInfo.startLineOrAddr.addr = startAddr; |
| 91 | |
| 92 | /* Now construct each line */ |
| 93 | for (curLine = 0, pc = (CORE_ADDR) startAddr; (curLine < maxLines);) |
| 94 | { |
| 95 | TuiWinElementPtr element = (TuiWinElementPtr) disassemWin->generic.content[curLine]; |
| 96 | struct breakpoint *bp; |
| 97 | |
| 98 | print_address (pc, gdb_dis_out); |
| 99 | |
| 100 | curLen = strlen (tui_file_get_strbuf (gdb_dis_out)); |
| 101 | i = curLen - ((curLen / tab_len) * tab_len); |
| 102 | |
| 103 | /* adjust buffer length if necessary */ |
| 104 | tui_file_adjust_strbuf ((tab_len - i > 0) ? (tab_len - i) : 0, gdb_dis_out); |
| 105 | |
| 106 | /* Add spaces to make the instructions start onthe same column */ |
| 107 | while (i < tab_len) |
| 108 | { |
| 109 | tui_file_get_strbuf (gdb_dis_out)[curLen] = ' '; |
| 110 | i++; |
| 111 | curLen++; |
| 112 | } |
| 113 | tui_file_get_strbuf (gdb_dis_out)[curLen] = '\0'; |
| 114 | |
| 115 | newpc = pc + ((*tm_print_insn) (pc, &asmInfo)); |
| 116 | |
| 117 | /* Now copy the line taking the offset into account */ |
| 118 | if (strlen (tui_file_get_strbuf (gdb_dis_out)) > offset) |
| 119 | strcpy (element->whichElement.source.line, |
| 120 | &(tui_file_get_strbuf (gdb_dis_out)[offset])); |
| 121 | else |
| 122 | element->whichElement.source.line[0] = '\0'; |
| 123 | element->whichElement.source.lineOrAddr.addr = (Opaque) pc; |
| 124 | element->whichElement.source.isExecPoint = |
| 125 | (pc == (CORE_ADDR) ((TuiWinElementPtr) locator->content[0])->whichElement.locator.addr); |
| 126 | bp = _hasBreak (pc); |
| 127 | element->whichElement.source.hasBreak = |
| 128 | (bp != (struct breakpoint *) NULL && |
| 129 | (!element->whichElement.source.isExecPoint || |
| 130 | (bp->disposition != del || bp->hit_count <= 0))); |
| 131 | curLine++; |
| 132 | pc = newpc; |
| 133 | /* reset the buffer to empty */ |
| 134 | tui_file_get_strbuf (gdb_dis_out)[0] = '\0'; |
| 135 | } |
| 136 | ui_file_delete (gdb_dis_out); |
| 137 | gdb_dis_out = NULL; |
| 138 | disassemWin->generic.contentSize = curLine; |
| 139 | ret = TUI_SUCCESS; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | return ret; |
| 144 | } /* tuiSetDisassemContent */ |
| 145 | |
| 146 | |
| 147 | /* |
| 148 | ** tuiShowDisassem(). |
| 149 | ** Function to display the disassembly window with disassembled code. |
| 150 | */ |
| 151 | void |
| 152 | #ifdef __STDC__ |
| 153 | tuiShowDisassem ( |
| 154 | Opaque startAddr) |
| 155 | #else |
| 156 | tuiShowDisassem (startAddr) |
| 157 | Opaque startAddr; |
| 158 | #endif |
| 159 | { |
| 160 | struct symtab *s = find_pc_symtab ((CORE_ADDR) startAddr); |
| 161 | TuiWinInfoPtr winWithFocus = tuiWinWithFocus (); |
| 162 | |
| 163 | tuiAddWinToLayout (DISASSEM_WIN); |
| 164 | tuiUpdateSourceWindow (disassemWin, s, startAddr, FALSE); |
| 165 | /* |
| 166 | ** if the focus was in the src win, put it in the asm win, if the |
| 167 | ** source view isn't split |
| 168 | */ |
| 169 | if (currentLayout () != SRC_DISASSEM_COMMAND && winWithFocus == srcWin) |
| 170 | tuiSetWinFocusTo (disassemWin); |
| 171 | |
| 172 | return; |
| 173 | } /* tuiShowDisassem */ |
| 174 | |
| 175 | |
| 176 | /* |
| 177 | ** tuiShowDisassemAndUpdateSource(). |
| 178 | ** Function to display the disassembly window. |
| 179 | */ |
| 180 | void |
| 181 | #ifdef __STDC__ |
| 182 | tuiShowDisassemAndUpdateSource ( |
| 183 | Opaque startAddr) |
| 184 | #else |
| 185 | tuiShowDisassemAndUpdateSource (startAddr) |
| 186 | Opaque startAddr; |
| 187 | #endif |
| 188 | { |
| 189 | struct symtab_and_line sal; |
| 190 | |
| 191 | tuiShowDisassem (startAddr); |
| 192 | if (currentLayout () == SRC_DISASSEM_COMMAND) |
| 193 | { |
| 194 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); |
| 195 | /* |
| 196 | ** Update what is in the source window if it is displayed too, |
| 197 | ** note that it follows what is in the disassembly window and visa-versa |
| 198 | */ |
| 199 | sal = find_pc_line ((CORE_ADDR) startAddr, 0); |
| 200 | current_source_symtab = sal.symtab; |
| 201 | tuiUpdateSourceWindow (srcWin, sal.symtab, (Opaque) sal.line, TRUE); |
| 202 | tuiUpdateLocatorFilename (sal.symtab->filename); |
| 203 | } |
| 204 | |
| 205 | return; |
| 206 | } /* tuiShowDisassemAndUpdateSource */ |
| 207 | |
| 208 | |
| 209 | /* |
| 210 | ** tuiShowDisassemAsIs(). |
| 211 | ** Function to display the disassembly window. This function shows |
| 212 | ** the disassembly as specified by the horizontal offset. |
| 213 | */ |
| 214 | void |
| 215 | #ifdef __STDC__ |
| 216 | tuiShowDisassemAsIs ( |
| 217 | Opaque addr) |
| 218 | #else |
| 219 | tuiShowDisassemAsIs (addr) |
| 220 | Opaque addr; |
| 221 | #endif |
| 222 | { |
| 223 | tuiAddWinToLayout (DISASSEM_WIN); |
| 224 | tuiUpdateSourceWindowAsIs (disassemWin, (struct symtab *) NULL, addr, FALSE); |
| 225 | /* |
| 226 | ** Update what is in the source window if it is displayed too, not that it |
| 227 | ** follows what is in the disassembly window and visa-versa |
| 228 | */ |
| 229 | if (currentLayout () == SRC_DISASSEM_COMMAND) |
| 230 | tuiShowSourceContent (srcWin); /*???? Need to do more? */ |
| 231 | |
| 232 | return; |
| 233 | } /* tuiShowDisassem */ |
| 234 | |
| 235 | |
| 236 | /* |
| 237 | ** tuiGetBeginAsmAddress(). |
| 238 | */ |
| 239 | Opaque |
| 240 | #ifdef __STDC__ |
| 241 | tuiGetBeginAsmAddress (void) |
| 242 | #else |
| 243 | tuiGetBeginAsmAddress () |
| 244 | #endif |
| 245 | { |
| 246 | TuiGenWinInfoPtr locator; |
| 247 | TuiLocatorElementPtr element; |
| 248 | Opaque addr; |
| 249 | |
| 250 | locator = locatorWinInfoPtr (); |
| 251 | element = &((TuiWinElementPtr) locator->content[0])->whichElement.locator; |
| 252 | |
| 253 | if (element->addr == (Opaque) 0) |
| 254 | { |
| 255 | /*the target is not executing, because the pc is 0 */ |
| 256 | |
| 257 | addr = (Opaque) parse_and_eval_address ("main"); |
| 258 | |
| 259 | if (addr == (Opaque) 0) |
| 260 | addr = (Opaque) parse_and_eval_address ("MAIN"); |
| 261 | |
| 262 | } |
| 263 | else /* the target is executing */ |
| 264 | addr = element->addr; |
| 265 | |
| 266 | return addr; |
| 267 | } /* tuiGetBeginAsmAddress */ |
| 268 | |
| 269 | |
| 270 | /* |
| 271 | ** tuiVerticalDisassemScroll(). |
| 272 | ** Scroll the disassembly forward or backward vertically |
| 273 | */ |
| 274 | void |
| 275 | #ifdef __STDC__ |
| 276 | tuiVerticalDisassemScroll ( |
| 277 | TuiScrollDirection scrollDirection, |
| 278 | int numToScroll) |
| 279 | #else |
| 280 | tuiVerticalDisassemScroll (scrollDirection, numToScroll) |
| 281 | TuiScrollDirection scrollDirection; |
| 282 | int numToScroll; |
| 283 | #endif |
| 284 | { |
| 285 | if (disassemWin->generic.content != (OpaquePtr) NULL) |
| 286 | { |
| 287 | Opaque pc, lowAddr; |
| 288 | TuiWinContent content; |
| 289 | struct symtab *s; |
| 290 | |
| 291 | content = (TuiWinContent) disassemWin->generic.content; |
| 292 | if (current_source_symtab == (struct symtab *) NULL) |
| 293 | s = find_pc_symtab (selected_frame->pc); |
| 294 | else |
| 295 | s = current_source_symtab; |
| 296 | |
| 297 | pc = content[0]->whichElement.source.lineOrAddr.addr; |
| 298 | if (find_pc_partial_function ((CORE_ADDR) pc, |
| 299 | (char **) NULL, |
| 300 | (CORE_ADDR *) & lowAddr, |
| 301 | (CORE_ADDR) NULL) == 0) |
| 302 | error ("No function contains prgram counter for selected frame.\n"); |
| 303 | else |
| 304 | { |
| 305 | register int line = 0; |
| 306 | register Opaque newLow; |
| 307 | bfd_byte buffer[4]; |
| 308 | |
| 309 | newLow = pc; |
| 310 | if (scrollDirection == FORWARD_SCROLL) |
| 311 | { |
| 312 | for (; line < numToScroll; line++) |
| 313 | newLow += sizeof (bfd_getb32 (buffer)); |
| 314 | } |
| 315 | else |
| 316 | { |
| 317 | for (; newLow >= (Opaque) 0 && line < numToScroll; line++) |
| 318 | newLow -= sizeof (bfd_getb32 (buffer)); |
| 319 | } |
| 320 | tuiUpdateSourceWindowAsIs (disassemWin, s, newLow, FALSE); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | return; |
| 325 | } /* tuiVerticalDisassemScroll */ |
| 326 | |
| 327 | |
| 328 | |
| 329 | /***************************************** |
| 330 | ** STATIC LOCAL FUNCTIONS ** |
| 331 | ******************************************/ |
| 332 | /* |
| 333 | ** _hasBreak(). |
| 334 | ** Answer whether there is a break point at the input line in the |
| 335 | ** source file indicated |
| 336 | */ |
| 337 | static struct breakpoint * |
| 338 | #ifdef __STDC__ |
| 339 | _hasBreak ( |
| 340 | CORE_ADDR addr) |
| 341 | #else |
| 342 | _hasBreak (addr) |
| 343 | CORE_ADDR addr; |
| 344 | #endif |
| 345 | { |
| 346 | struct breakpoint *bpWithBreak = (struct breakpoint *) NULL; |
| 347 | struct breakpoint *bp; |
| 348 | extern struct breakpoint *breakpoint_chain; |
| 349 | |
| 350 | |
| 351 | for (bp = breakpoint_chain; |
| 352 | (bp != (struct breakpoint *) NULL && |
| 353 | bpWithBreak == (struct breakpoint *) NULL); |
| 354 | bp = bp->next) |
| 355 | if (addr == bp->address) |
| 356 | bpWithBreak = bp; |
| 357 | |
| 358 | return bpWithBreak; |
| 359 | } /* _hasBreak */ |