/* Disassembly display.
- Copyright (C) 1998-2019 Free Software Foundation, Inc.
+ Copyright (C) 1998-2020 Free Software Foundation, Inc.
Contributed by Hewlett-Packard Company.
#include "source.h"
#include "disasm.h"
#include "tui/tui.h"
+#include "tui/tui-command.h"
#include "tui/tui-data.h"
#include "tui/tui-win.h"
#include "tui/tui-layout.h"
#include "tui/tui-stack.h"
#include "tui/tui-file.h"
#include "tui/tui-disasm.h"
+#include "tui/tui-source.h"
#include "progspace.h"
#include "objfiles.h"
+#include "cli/cli-style.h"
#include "gdb_curses.h"
-struct tui_asm_line
+struct tui_asm_line
{
CORE_ADDR addr;
- char *addr_string;
- char *insn;
+ std::string addr_string;
+ size_t addr_size;
+ std::string insn;
};
+/* Helper function to find the number of characters in STR, skipping
+ any ANSI escape sequences. */
+static size_t
+len_without_escapes (const std::string &str)
+{
+ size_t len = 0;
+ const char *ptr = str.c_str ();
+ char c;
+
+ while ((c = *ptr++) != '\0')
+ {
+ if (c == '\033')
+ {
+ ui_file_style style;
+ size_t n_read;
+ if (style.parse (ptr, &n_read))
+ ptr += n_read;
+ else
+ {
+ /* Shouldn't happen, but just skip the ESC if it somehow
+ does. */
+ ++ptr;
+ }
+ }
+ else
+ ++len;
+ }
+ return len;
+}
+
/* 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 gdbarch *gdbarch, struct tui_asm_line *asm_lines,
- CORE_ADDR pc, int count)
+tui_disassemble (struct gdbarch *gdbarch,
+ std::vector<tui_asm_line> &asm_lines,
+ CORE_ADDR pc, int pos, int count,
+ size_t *addr_size = nullptr)
{
- string_file gdb_dis_out;
+ bool term_out = source_styling && gdb_stdout->can_emit_style_escape ();
+ string_file gdb_dis_out (term_out);
/* Now construct each line. */
- for (; count > 0; count--, asm_lines++)
+ for (int i = 0; i < count; ++i)
{
- xfree (asm_lines->addr_string);
- xfree (asm_lines->insn);
-
print_address (gdbarch, pc, &gdb_dis_out);
- asm_lines->addr = pc;
- asm_lines->addr_string = xstrdup (gdb_dis_out.c_str ());
+ asm_lines[pos + i].addr = pc;
+ asm_lines[pos + i].addr_string = std::move (gdb_dis_out.string ());
gdb_dis_out.clear ();
+ if (addr_size != nullptr)
+ {
+ size_t new_size;
+
+ if (term_out)
+ new_size = len_without_escapes (asm_lines[pos + i].addr_string);
+ else
+ new_size = asm_lines[pos + i].addr_string.size ();
+ *addr_size = std::max (*addr_size, new_size);
+ asm_lines[pos + i].addr_size = new_size;
+ }
+
pc = pc + gdb_print_insn (gdbarch, pc, &gdb_dis_out, NULL);
- asm_lines->insn = xstrdup (gdb_dis_out.c_str ());
+ asm_lines[pos + i].insn = std::move (gdb_dis_out.string ());
/* Reset the buffer to empty. */
gdb_dis_out.clear ();
{
CORE_ADDR new_low;
int max_lines;
- int i;
- struct tui_asm_line *asm_lines;
max_lines = (from > 0) ? from : - from;
if (max_lines <= 1)
- return pc;
+ return pc;
- asm_lines = XALLOCAVEC (struct tui_asm_line, max_lines);
- memset (asm_lines, 0, sizeof (struct tui_asm_line) * max_lines);
+ std::vector<tui_asm_line> asm_lines (max_lines);
new_low = pc;
if (from > 0)
{
- tui_disassemble (gdbarch, asm_lines, pc, max_lines);
+ tui_disassemble (gdbarch, asm_lines, pc, 0, max_lines);
new_low = asm_lines[max_lines - 1].addr;
}
else
CORE_ADDR last_addr;
int pos;
struct bound_minimal_symbol msymbol;
-
+
/* Find backward an address which is a symbol and for which
disassembling from that address will fill completely the
window. */
else
new_low += 1 * max_lines;
- tui_disassemble (gdbarch, asm_lines, new_low, max_lines);
+ tui_disassemble (gdbarch, asm_lines, new_low, 0, max_lines);
last_addr = asm_lines[pos].addr;
} while (last_addr > pc && msymbol.minsym);
do
{
CORE_ADDR next_addr;
-
+
pos++;
if (pos >= max_lines)
pos = 0;
- next_addr = tui_disassemble (gdbarch, &asm_lines[pos],
- last_addr, 1);
+ next_addr = tui_disassemble (gdbarch, asm_lines,
+ last_addr, pos, 1);
/* If there are some problems while disassembling exit. */
if (next_addr <= last_addr)
pos = 0;
new_low = asm_lines[pos].addr;
}
- for (i = 0; i < max_lines; i++)
- {
- xfree (asm_lines[i].addr_string);
- xfree (asm_lines[i].insn);
- }
return new_low;
}
/* Function to set the disassembly window's content. */
-enum tui_status
-tui_set_disassem_content (struct gdbarch *gdbarch, CORE_ADDR pc)
+bool
+tui_disasm_window::set_contents (struct gdbarch *arch,
+ const struct symtab_and_line &sal)
{
int i;
- int offset = TUI_DISASM_WIN->horizontal_offset;
+ int offset = horizontal_offset;
int max_lines, line_width;
CORE_ADDR cur_pc;
struct tui_locator_window *locator = tui_locator_win_info_ptr ();
int tab_len = tui_tab_width;
- struct tui_asm_line *asm_lines;
int insn_pos;
- int addr_size, insn_size;
- char *line;
-
- if (pc == 0)
- return TUI_FAILURE;
- tui_alloc_source_buffer (TUI_DISASM_WIN);
+ CORE_ADDR pc = sal.pc;
+ if (pc == 0)
+ return false;
- tui_source_window_base *base = TUI_DISASM_WIN;
- base->gdbarch = gdbarch;
- base->start_line_or_addr.loa = LOA_ADDRESS;
- base->start_line_or_addr.u.addr = pc;
+ gdbarch = arch;
+ start_line_or_addr.loa = LOA_ADDRESS;
+ start_line_or_addr.u.addr = pc;
cur_pc = locator->addr;
/* Window size, excluding highlight box. */
- max_lines = TUI_DISASM_WIN->height - 2;
- line_width = TUI_DISASM_WIN->width - 2;
+ max_lines = height - 2;
+ line_width = width - TUI_EXECINFO_SIZE - 2;
/* Get temporary table that will hold all strings (addr & insn). */
- asm_lines = XALLOCAVEC (struct tui_asm_line, max_lines);
- memset (asm_lines, 0, sizeof (struct tui_asm_line) * max_lines);
-
- tui_disassemble (gdbarch, asm_lines, pc, max_lines);
-
- /* Determine maximum address- and instruction lengths. */
- addr_size = 0;
- insn_size = 0;
- for (i = 0; i < max_lines; i++)
- {
- size_t len = strlen (asm_lines[i].addr_string);
-
- if (len > addr_size)
- addr_size = len;
-
- len = strlen (asm_lines[i].insn);
- if (len > insn_size)
- insn_size = len;
- }
+ std::vector<tui_asm_line> asm_lines (max_lines);
+ size_t addr_size = 0;
+ tui_disassemble (gdbarch, asm_lines, pc, 0, max_lines, &addr_size);
/* Align instructions to the same column. */
insn_pos = (1 + (addr_size / tab_len)) * tab_len;
- /* Allocate memory to create each line. */
- line = (char*) alloca (insn_pos + insn_size + 1);
-
/* Now construct each line. */
- TUI_DISASM_WIN->content.resize (max_lines);
+ content.resize (max_lines);
for (i = 0; i < max_lines; i++)
{
- int cur_len;
-
- tui_source_element *src = &TUI_DISASM_WIN->content[i];
- strcpy (line, asm_lines[i].addr_string);
- cur_len = strlen (line);
- memset (line + cur_len, ' ', insn_pos - cur_len);
- strcpy (line + insn_pos, asm_lines[i].insn);
-
- /* Now copy the line taking the offset into account. */
- xfree (src->line);
- if (strlen (line) > offset)
- src->line = xstrndup (&line[offset], line_width);
- else
- src->line = xstrdup ("");
+ tui_source_element *src = &content[i];
+
+ std::string line
+ = (asm_lines[i].addr_string
+ + n_spaces (insn_pos - asm_lines[i].addr_size)
+ + asm_lines[i].insn);
+
+ const char *ptr = line.c_str ();
+ src->line = tui_copy_source_line (&ptr, -1, offset, line_width, 0);
src->line_or_addr.loa = LOA_ADDRESS;
src->line_or_addr.u.addr = asm_lines[i].addr;
src->is_exec_point = asm_lines[i].addr == cur_pc;
-
- /* See whether there is a breakpoint installed. */
- src->has_break = (!src->is_exec_point
- && breakpoint_here_p (current_program_space->aspace,
- pc)
- != no_breakpoint_here);
-
- xfree (asm_lines[i].addr_string);
- xfree (asm_lines[i].insn);
}
- return TUI_SUCCESS;
+ return true;
}
-/* Function to display the disassembly window with disassembled code. */
-void
-tui_show_disassem (struct gdbarch *gdbarch, CORE_ADDR start_addr)
-{
- struct symtab *s = find_pc_line_symtab (start_addr);
- struct tui_win_info *win_with_focus = tui_win_with_focus ();
- struct tui_line_or_address val;
-
- val.loa = LOA_ADDRESS;
- val.u.addr = start_addr;
- tui_add_win_to_layout (DISASSEM_WIN);
- tui_update_source_window (TUI_DISASM_WIN, gdbarch, s, val, FALSE);
-
- /* If the focus was in the src win, put it in the asm win, if the
- source view isn't split. */
- if (tui_current_layout () != SRC_DISASSEM_COMMAND
- && win_with_focus == TUI_SRC_WIN)
- tui_set_win_focus_to (TUI_DISASM_WIN);
-
- return;
-}
-
-
-/* Function to display the disassembly window. */
-void
-tui_show_disassem_and_update_source (struct gdbarch *gdbarch,
- CORE_ADDR start_addr)
-{
- struct symtab_and_line sal;
-
- tui_show_disassem (gdbarch, start_addr);
- if (tui_current_layout () == SRC_DISASSEM_COMMAND)
- {
- struct tui_line_or_address val;
-
- /* 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. */
- sal = find_pc_line (start_addr, 0);
- val.loa = LOA_LINE;
- val.u.line_no = sal.line;
- tui_update_source_window (TUI_SRC_WIN, gdbarch, sal.symtab, val, TRUE);
- if (sal.symtab)
- {
- set_current_source_symtab_and_line (sal);
- tui_update_locator_fullname (symtab_to_fullname (sal.symtab));
- }
- else
- tui_update_locator_fullname ("?");
- }
-
- return;
-}
-
void
tui_get_begin_asm_address (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
{
struct tui_locator_window *locator;
struct gdbarch *gdbarch = get_current_arch ();
- CORE_ADDR addr;
+ CORE_ADDR addr = 0;
locator = tui_locator_win_info_ptr ();
if (locator->addr == 0)
{
- struct bound_minimal_symbol main_symbol;
-
- /* Find address of the start of program.
- Note: this should be language specific. */
- main_symbol = lookup_minimal_symbol ("main", NULL, NULL);
- if (main_symbol.minsym == 0)
- main_symbol = lookup_minimal_symbol ("MAIN", NULL, NULL);
- if (main_symbol.minsym == 0)
- main_symbol = lookup_minimal_symbol ("_start", NULL, NULL);
- if (main_symbol.minsym)
- addr = BMSYMBOL_VALUE_ADDRESS (main_symbol);
- else
- addr = 0;
+ if (have_full_symbols () || have_partial_symbols ())
+ {
+ set_default_source_symtab_and_line ();
+ struct symtab_and_line sal = get_current_source_symtab_and_line ();
+
+ if (sal.symtab != nullptr)
+ find_line_pc (sal.symtab, sal.line, &addr);
+ }
+
+ if (addr == 0)
+ {
+ struct bound_minimal_symbol main_symbol
+ = lookup_minimal_symbol (main_name (), nullptr, nullptr);
+ if (main_symbol.minsym != nullptr)
+ addr = BMSYMBOL_VALUE_ADDRESS (main_symbol);
+ }
}
else /* The target is executing. */
{
/* Determine where to start the disassembly so that the pc is about
in the middle of the viewport. */
- pos = tui_default_win_viewport_height (DISASSEM_WIN, DISASSEM_COMMAND) / 2;
+ if (tui_win_list[DISASSEM_WIN] != NULL)
+ pos = tui_win_list[DISASSEM_WIN]->height;
+ else if (TUI_CMD_WIN == NULL)
+ pos = tui_term_height () / 2 - 2;
+ else
+ pos = tui_term_height () - TUI_CMD_WIN->height - 2;
+ pos = (pos - 2) / 2;
+
pc = tui_find_disassembly_address (gdbarch, pc, -pos);
if (pc < low)
if (!content.empty ())
{
CORE_ADDR pc;
- struct tui_line_or_address val;
- pc = content[0].line_or_addr.u.addr;
+ pc = start_line_or_addr.u.addr;
if (num_to_scroll >= 0)
num_to_scroll++;
else
--num_to_scroll;
- val.loa = LOA_ADDRESS;
- val.u.addr = tui_find_disassembly_address (gdbarch, pc, num_to_scroll);
- tui_update_source_window_as_is (this, gdbarch,
- NULL, val, FALSE);
+ symtab_and_line sal {};
+ sal.pspace = current_program_space;
+ sal.pc = tui_find_disassembly_address (gdbarch, pc, num_to_scroll);
+ update_source_window_as_is (gdbarch, sal);
+ }
+}
+
+bool
+tui_disasm_window::location_matches_p (struct bp_location *loc, int line_no)
+{
+ return (content[line_no].line_or_addr.loa == LOA_ADDRESS
+ && content[line_no].line_or_addr.u.addr == loc->address);
+}
+
+bool
+tui_disasm_window::addr_is_displayed (CORE_ADDR addr) const
+{
+ if (content.size () < SCROLL_THRESHOLD)
+ return false;
+
+ for (size_t i = 0; i < content.size () - SCROLL_THRESHOLD; ++i)
+ {
+ if (content[i].line_or_addr.loa == LOA_ADDRESS
+ && content[i].line_or_addr.u.addr == addr)
+ return true;
+ }
+
+ return false;
+}
+
+void
+tui_disasm_window::maybe_update (struct frame_info *fi, symtab_and_line sal)
+{
+ CORE_ADDR low;
+
+ struct gdbarch *frame_arch = get_frame_arch (fi);
+
+ if (find_pc_partial_function (sal.pc, NULL, &low, NULL) == 0)
+ {
+ /* There is no symbol available for current PC. There is no
+ safe way how to "disassemble backwards". */
+ low = sal.pc;
+ }
+ else
+ low = tui_get_low_disassembly_address (frame_arch, low, sal.pc);
+
+ struct tui_line_or_address a;
+
+ a.loa = LOA_ADDRESS;
+ a.u.addr = low;
+ if (!addr_is_displayed (sal.pc))
+ {
+ sal.pc = low;
+ update_source_window (frame_arch, sal);
+ }
+ else
+ {
+ a.u.addr = sal.pc;
+ set_is_exec_point_at (a);
}
}
projects / deliverable / binutils-gdb.git / blobdiff