From: Stephane Carrez Date: Tue, 27 Aug 2002 21:59:49 +0000 (+0000) Subject: * tuiDisassem.c (tui_disassemble): New function to disassemble X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=aec2f747a8c47ca76a0f909815714ddee705e669;p=binutils-gdb.git * tuiDisassem.c (tui_disassemble): New function to disassemble several lines in a buffer. (tui_find_disassembly_address): New function to search backward or forward a disassembly line. (tuiSetDisassemContent): Use tui_disassemble to obtain the real content and format it in the window. (tuiShowDisassemAndUpdateSource): Remove unused locals. (tuiVerticalDisassemScroll): Use tui_find_disassembly_address to obtain the address to disassemble for the scrolling. * tuiDisassem.h (tuiGetBeginAsmAddress): Update. * tuiSourceWin.c (tuiUpdateSourceWindowAsIs): Don't pass symtab. --- diff --git a/gdb/tui/ChangeLog b/gdb/tui/ChangeLog index 343151f9b44..be156d2a936 100644 --- a/gdb/tui/ChangeLog +++ b/gdb/tui/ChangeLog @@ -1,3 +1,17 @@ +2002-08-28 Stephane Carrez + + * tuiDisassem.c (tui_disassemble): New function to disassemble + several lines in a buffer. + (tui_find_disassembly_address): New function to search backward + or forward a disassembly line. + (tuiSetDisassemContent): Use tui_disassemble to obtain the real + content and format it in the window. + (tuiShowDisassemAndUpdateSource): Remove unused locals. + (tuiVerticalDisassemScroll): Use tui_find_disassembly_address to + obtain the address to disassemble for the scrolling. + * tuiDisassem.h (tuiGetBeginAsmAddress): Update. + * tuiSourceWin.c (tuiUpdateSourceWindowAsIs): Don't pass symtab. + 2002-08-28 Stephane Carrez * tuiIO.c (CTRL_CHAR): Redefine and use readline 4.3 definition. diff --git a/gdb/tui/tuiDisassem.c b/gdb/tui/tuiDisassem.c index 23b2443f24f..719a26b40b1 100644 --- a/gdb/tui/tuiDisassem.c +++ b/gdb/tui/tuiDisassem.c @@ -53,95 +53,240 @@ #include "tuiStack.h" #include "tui-file.h" +struct tui_asm_line +{ + CORE_ADDR addr; + char* addr_string; + char* insn; +}; + +/* Function to set the disassembly window's content. + Disassemble count lines starting at pc. + Return address of the count'th instruction after pc. */ +static CORE_ADDR +tui_disassemble (struct tui_asm_line* lines, CORE_ADDR pc, int count) +{ + struct ui_file *gdb_dis_out; + disassemble_info asm_info; -/* - ** tuiSetDisassemContent(). - ** Function to set the disassembly window's content. - */ + /* now init the ui_file structure */ + gdb_dis_out = tui_sfileopen (256); + + memcpy (&asm_info, TARGET_PRINT_INSN_INFO, sizeof (asm_info)); + asm_info.stream = gdb_dis_out; + + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + asm_info.endian = BFD_ENDIAN_BIG; + else + asm_info.endian = BFD_ENDIAN_LITTLE; + + if (TARGET_ARCHITECTURE != NULL) + asm_info.mach = TARGET_ARCHITECTURE->mach; + + /* Now construct each line */ + for (; count > 0; count--, lines++) + { + if (lines->addr_string) + xfree (lines->addr_string); + if (lines->insn) + xfree (lines->insn); + + print_address (pc, gdb_dis_out); + lines->addr = pc; + lines->addr_string = xstrdup (tui_file_get_strbuf (gdb_dis_out)); + + ui_file_rewind (gdb_dis_out); + + pc = pc + TARGET_PRINT_INSN (pc, &asm_info); + + lines->insn = xstrdup (tui_file_get_strbuf (gdb_dis_out)); + + /* reset the buffer to empty */ + ui_file_rewind (gdb_dis_out); + } + ui_file_delete (gdb_dis_out); + return pc; +} + +/* Find the disassembly address that corresponds to FROM lines + above or below the PC. Variable sized instructions are taken + into account by the algorithm. */ +static CORE_ADDR +tui_find_disassembly_address (CORE_ADDR pc, int from) +{ + register CORE_ADDR newLow; + int maxLines; + int i; + struct tui_asm_line* lines; + + maxLines = (from > 0) ? from : - from; + if (maxLines <= 1) + return pc; + + lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line) + * maxLines); + memset (lines, 0, sizeof (struct tui_asm_line) * maxLines); + + newLow = pc; + if (from > 0) + { + tui_disassemble (lines, pc, maxLines); + newLow = lines[maxLines - 1].addr; + } + else + { + CORE_ADDR last_addr; + int pos; + struct minimal_symbol* msymbol; + + /* Find backward an address which is a symbol + and for which disassembling from that address will fill + completely the window. */ + pos = maxLines - 1; + do { + newLow -= 1 * maxLines; + msymbol = lookup_minimal_symbol_by_pc_section (newLow, 0); + + if (msymbol) + newLow = SYMBOL_VALUE_ADDRESS (msymbol); + else + newLow += 1 * maxLines; + + tui_disassemble (lines, newLow, maxLines); + last_addr = lines[pos].addr; + } while (last_addr > pc && msymbol); + + /* Scan forward disassembling one instruction at a time + until the last visible instruction of the window + matches the pc. We keep the disassembled instructions + in the 'lines' window and shift it downward (increasing + its addresses). */ + if (last_addr < pc) + do + { + CORE_ADDR next_addr; + + pos++; + if (pos >= maxLines) + pos = 0; + + next_addr = tui_disassemble (&lines[pos], last_addr, 1); + + /* If there are some problems while disassembling exit. */ + if (next_addr <= last_addr) + break; + last_addr = next_addr; + } while (last_addr <= pc); + pos++; + if (pos >= maxLines) + pos = 0; + newLow = lines[pos].addr; + } + for (i = 0; i < maxLines; i++) + { + xfree (lines[i].addr_string); + xfree (lines[i].insn); + } + return newLow; +} + +/* Function to set the disassembly window's content. */ TuiStatus -tuiSetDisassemContent (struct symtab *s, CORE_ADDR startAddr) +tuiSetDisassemContent (CORE_ADDR pc) { TuiStatus ret = TUI_FAILURE; - struct ui_file *gdb_dis_out; - - if (startAddr != 0) + register int i; + register int offset = disassemWin->detail.sourceInfo.horizontalOffset; + register int lineWidth, maxLines; + CORE_ADDR cur_pc; + TuiGenWinInfoPtr locator = locatorWinInfoPtr (); + int tab_len = tuiDefaultTabLen (); + struct tui_asm_line* lines; + int insn_pos; + int addr_size, max_size; + char* line; + + if (pc == 0) + return TUI_FAILURE; + + ret = tuiAllocSourceBuffer (disassemWin); + if (ret != TUI_SUCCESS) + return ret; + + disassemWin->detail.sourceInfo.startLineOrAddr.addr = pc; + cur_pc = (CORE_ADDR) + (((TuiWinElementPtr) locator->content[0])->whichElement.locator.addr); + + maxLines = disassemWin->generic.height - 2; /* account for hilite */ + + /* Get temporary table that will hold all strings (addr & insn). */ + lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line) + * maxLines); + memset (lines, 0, sizeof (struct tui_asm_line) * maxLines); + + lineWidth = disassemWin->generic.width - 1; + + tui_disassemble (lines, pc, maxLines); + + /* See what is the maximum length of an address and of a line. */ + addr_size = 0; + max_size = 0; + for (i = 0; i < maxLines; i++) { - register int i, desc; + size_t len = strlen (lines[i].addr_string); + if (len > addr_size) + addr_size = len; - if ((ret = tuiAllocSourceBuffer (disassemWin)) == TUI_SUCCESS) - { - register int offset = disassemWin->detail.sourceInfo.horizontalOffset; - register int threshold, curLine = 0, lineWidth, maxLines; - CORE_ADDR newpc, pc; - disassemble_info asmInfo; - TuiGenWinInfoPtr locator = locatorWinInfoPtr (); -extern void strcat_address (CORE_ADDR, char *, int); -extern void strcat_address_numeric (CORE_ADDR, int, char *, int); - int curLen = 0; - int tab_len = tuiDefaultTabLen (); - - maxLines = disassemWin->generic.height - 2; /* account for hilite */ - lineWidth = disassemWin->generic.width - 1; - threshold = (lineWidth - 1) + offset; - - /* now init the ui_file structure */ - gdb_dis_out = tui_sfileopen (threshold); - - asmInfo = tm_print_insn_info; - asmInfo.stream = gdb_dis_out; - - disassemWin->detail.sourceInfo.startLineOrAddr.addr = startAddr; - - /* Now construct each line */ - for (curLine = 0, pc = startAddr; (curLine < maxLines);) - { - TuiWinElementPtr element = (TuiWinElementPtr) disassemWin->generic.content[curLine]; - - print_address (pc, gdb_dis_out); - - curLen = strlen (tui_file_get_strbuf (gdb_dis_out)); - i = curLen - ((curLen / tab_len) * tab_len); - - /* adjust buffer length if necessary */ - tui_file_adjust_strbuf ((tab_len - i > 0) ? (tab_len - i) : 0, gdb_dis_out); - - /* Add spaces to make the instructions start onthe same column */ - while (i < tab_len) - { - tui_file_get_strbuf (gdb_dis_out)[curLen] = ' '; - i++; - curLen++; - } - tui_file_get_strbuf (gdb_dis_out)[curLen] = '\0'; - - newpc = pc + ((*tm_print_insn) (pc, &asmInfo)); - - /* Now copy the line taking the offset into account */ - if (strlen (tui_file_get_strbuf (gdb_dis_out)) > offset) - strcpy (element->whichElement.source.line, - &(tui_file_get_strbuf (gdb_dis_out)[offset])); - else - element->whichElement.source.line[0] = '\0'; - element->whichElement.source.lineOrAddr.addr = pc; - element->whichElement.source.isExecPoint = - (pc == (CORE_ADDR) ((TuiWinElementPtr) locator->content[0])->whichElement.locator.addr); - element->whichElement.source.hasBreak = - (breakpoint_here_p (pc) != no_breakpoint_here - && !element->whichElement.source.isExecPoint); - curLine++; - pc = newpc; - /* reset the buffer to empty */ - tui_file_get_strbuf (gdb_dis_out)[0] = '\0'; - } - ui_file_delete (gdb_dis_out); - gdb_dis_out = NULL; - disassemWin->generic.contentSize = curLine; - ret = TUI_SUCCESS; - } + len = strlen (lines[i].insn) + tab_len; + if (len > max_size) + max_size = len; } + max_size += addr_size + tab_len; + + /* Allocate memory to create each line. */ + line = (char*) alloca (max_size); + insn_pos = (1 + (addr_size / tab_len)) * tab_len; + + /* Now construct each line */ + for (i = 0; i < maxLines; i++) + { + TuiWinElementPtr element; + TuiSourceElement* src; + int curLen; + + element = (TuiWinElementPtr) disassemWin->generic.content[i]; + src = &element->whichElement.source; + strcpy (line, lines[i].addr_string); + curLen = strlen (line); + + /* Add spaces to make the instructions start on the same column */ + while (curLen < insn_pos) + { + strcat (line, " "); + curLen++; + } + + strcat (line, lines[i].insn); + + /* Now copy the line taking the offset into account */ + if (strlen (line) > offset) + strcpy (src->line, &line[offset]); + else + src->line[0] = '\0'; + + src->lineOrAddr.addr = lines[i].addr; + src->isExecPoint = lines[i].addr == cur_pc; + + /* See whether there is a breakpoint installed. */ + src->hasBreak = (!src->isExecPoint + && breakpoint_here_p (pc) != no_breakpoint_here); - return ret; -} /* tuiSetDisassemContent */ + xfree (lines[i].addr_string); + xfree (lines[i].insn); + } + disassemWin->generic.contentSize = i; + return TUI_SUCCESS; +} /* @@ -182,7 +327,7 @@ tuiShowDisassemAndUpdateSource (CORE_ADDR startAddr) if (currentLayout () == SRC_DISASSEM_COMMAND) { TuiLineOrAddress val; - TuiGenWinInfoPtr locator = locatorWinInfoPtr (); + /* ** Update what is in the source window if it is displayed too, ** note that it follows what is in the disassembly window and visa-versa @@ -235,8 +380,7 @@ tuiGetBeginAsmAddress (void) addr = element->addr; return addr; -} - +} /* tuiGetBeginAsmAddress */ /* ** tuiVerticalDisassemScroll(). @@ -248,9 +392,11 @@ tuiVerticalDisassemScroll (TuiScrollDirection scrollDirection, { if (disassemWin->generic.content != (OpaquePtr) NULL) { - CORE_ADDR pc, lowAddr; + CORE_ADDR pc; TuiWinContent content; struct symtab *s; + TuiLineOrAddress val; + int maxLines, dir; content = (TuiWinContent) disassemWin->generic.content; if (current_source_symtab == (struct symtab *) NULL) @@ -258,32 +404,12 @@ tuiVerticalDisassemScroll (TuiScrollDirection scrollDirection, else s = current_source_symtab; + /* account for hilite */ + maxLines = disassemWin->generic.height - 2; pc = content[0]->whichElement.source.lineOrAddr.addr; - if (find_pc_partial_function (pc, (char **) NULL, &lowAddr, - (CORE_ADDR) 0) == 0) - error ("No function contains program counter for selected frame.\n"); - else - { - register int line = 0; - register CORE_ADDR newLow; - bfd_byte buffer[4]; - TuiLineOrAddress val; - - newLow = pc; - if (scrollDirection == FORWARD_SCROLL) - { - for (; line < numToScroll; line++) - newLow += sizeof (bfd_getb32 (buffer)); - } - else - { - for (; newLow != 0 && line < numToScroll; line++) - newLow -= sizeof (bfd_getb32 (buffer)); - } - val.addr = newLow; - tuiUpdateSourceWindowAsIs (disassemWin, s, val, FALSE); - } - } + dir = (scrollDirection == FORWARD_SCROLL) ? maxLines : - maxLines; - return; -} /* tuiVerticalDisassemScroll */ + val.addr = tui_find_disassembly_address (pc, dir); + tuiUpdateSourceWindowAsIs (disassemWin, s, val, FALSE); + } +} diff --git a/gdb/tui/tuiDisassem.h b/gdb/tui/tuiDisassem.h index f0aabdfb4c2..67284259bf0 100644 --- a/gdb/tui/tuiDisassem.h +++ b/gdb/tui/tuiDisassem.h @@ -31,7 +31,7 @@ /***************************************** ** PUBLIC FUNCTION EXTERNAL DECLS ** ******************************************/ -extern TuiStatus tuiSetDisassemContent (struct symtab *, CORE_ADDR); +extern TuiStatus tuiSetDisassemContent (CORE_ADDR); extern void tuiShowDisassem (CORE_ADDR); extern void tuiShowDisassemAndUpdateSource (CORE_ADDR); extern void tuiVerticalDisassemScroll (TuiScrollDirection, int); diff --git a/gdb/tui/tuiSourceWin.c b/gdb/tui/tuiSourceWin.c index 95b6cdf615d..b2ce594dbe3 100644 --- a/gdb/tui/tuiSourceWin.c +++ b/gdb/tui/tuiSourceWin.c @@ -111,7 +111,7 @@ tuiUpdateSourceWindowAsIs (TuiWinInfoPtr winInfo, struct symtab *s, if (winInfo->generic.type == SRC_WIN) ret = tuiSetSourceContent (s, lineOrAddr.lineNo, noerror); else - ret = tuiSetDisassemContent (s, lineOrAddr.addr); + ret = tuiSetDisassemContent (lineOrAddr.addr); if (ret == TUI_FAILURE) {