/* Function to set the disassembly window's content. */
enum tui_status
tui_set_disassem_content (CORE_ADDR pc)
{
enum tui_status ret = TUI_FAILURE;
int i;
int offset = TUI_DISASM_WIN->detail.source_info.horizontal_offset;
int line_width, max_lines;
CORE_ADDR cur_pc;
struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
int tab_len = tui_default_tab_len ();
struct tui_asm_line* asm_lines;
int insn_pos;
int addr_size, max_size;
char* line;
if (pc == 0)
return TUI_FAILURE;
ret = tui_alloc_source_buffer (TUI_DISASM_WIN);
if (ret != TUI_SUCCESS)
return ret;
TUI_DISASM_WIN->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr = pc;
cur_pc = (CORE_ADDR)
(((struct tui_win_element *) locator->content[0])->which_element.locator.addr);
max_lines = TUI_DISASM_WIN->generic.height - 2; /* account for hilite */
/* Get temporary table that will hold all strings (addr & insn). */
asm_lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line)
* max_lines);
memset (asm_lines, 0, sizeof (struct tui_asm_line) * max_lines);
line_width = TUI_DISASM_WIN->generic.width - 1;
tui_disassemble (asm_lines, pc, max_lines);
/* See what is the maximum length of an address and of a line. */
addr_size = 0;
max_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) + 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 < max_lines; i++)
{
struct tui_win_element * element;
struct tui_source_element* src;
int cur_len;
element = (struct tui_win_element *) TUI_DISASM_WIN->generic.content[i];
src = &element->which_element.source;
strcpy (line, asm_lines[i].addr_string);
cur_len = strlen (line);
/* Add spaces to make the instructions start on the same column */
while (cur_len < insn_pos)
{
strcat (line, " ");
cur_len++;
}
strcat (line, asm_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->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 (pc) != no_breakpoint_here);
xfree (asm_lines[i].addr_string);
xfree (asm_lines[i].insn);
}
TUI_DISASM_WIN->generic.content_size = i;
return TUI_SUCCESS;
}
/* 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)
{
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;
asm_lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line)
* max_lines);
memset (asm_lines, 0, sizeof (struct tui_asm_line) * max_lines);
new_low = pc;
if (from > 0)
{
tui_disassemble (asm_lines, pc, max_lines);
new_low = asm_lines[max_lines - 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 = max_lines - 1;
do {
new_low -= 1 * max_lines;
msymbol = lookup_minimal_symbol_by_pc_section (new_low, 0);
if (msymbol)
new_low = SYMBOL_VALUE_ADDRESS (msymbol);
else
new_low += 1 * max_lines;
tui_disassemble (asm_lines, new_low, max_lines);
last_addr = asm_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 >= max_lines)
pos = 0;
next_addr = tui_disassemble (&asm_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 >= max_lines)
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)
{
enum tui_status ret = TUI_FAILURE;
int i;
int offset = TUI_DISASM_WIN->detail.source_info.horizontal_offset;
int max_lines, line_width;
CORE_ADDR cur_pc;
struct tui_gen_win_info *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;
ret = tui_alloc_source_buffer (TUI_DISASM_WIN);
if (ret != TUI_SUCCESS)
return ret;
TUI_DISASM_WIN->detail.source_info.gdbarch = gdbarch;
TUI_DISASM_WIN->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr = pc;
cur_pc = locator->content[0]->which_element.locator.addr;
/* Window size, excluding highlight box. */
max_lines = TUI_DISASM_WIN->generic.height - 2;
line_width = TUI_DISASM_WIN->generic.width - 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;
}
/* 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. */
for (i = 0; i < max_lines; i++)
{
struct tui_win_element *element;
struct tui_source_element *src;
int cur_len;
element = TUI_DISASM_WIN->generic.content[i];
src = &element->which_element.source;
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. */
if (strlen (line) > offset)
{
strncpy (src->line, &line[offset], line_width);
src->line[line_width] = '\0';
}
else
src->line[0] = '\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);
}
TUI_DISASM_WIN->generic.content_size = i;
return TUI_SUCCESS;
}
