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mruby-bin-debugger: support mrb_debug_line_packed_map.

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-07-08 09:20:17 +09:00
parent f16ea05a17
commit c572165292
1 changed files with 35 additions and 4 deletions
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mrbgems/mruby-bin-debugger/tools/mrdb/apibreak.c
+35 -4
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@@ -20,25 +20,56 @@
#define MRB_DEBUG_BP_FILE_OK (0x0001)
#define MRB_DEBUG_BP_LINENO_OK (0x0002)
static uint32_t
packed_int_decode(char *p, char **newpos)
{
size_t i = 0, shift = 0;
uint32_t n = 0;
do {
n |= ((uint32_t)(p[i] & 0x7f)) << shift;
i++;
shift += 7;
} while (shift < sizeof(uint32_t) * 8 && (p[i - 1] & 0x80));
if (newpos) *newpos = p + i;
return n;
}
static uint16_t
check_lineno(mrb_irep_debug_info_file *info_file, uint16_t lineno)
{
uint32_t count = info_file->line_entry_count;
uint16_t l_idx;
if (info_file->line_type == mrb_debug_line_ary) {
switch (info_file->line_type) {
case mrb_debug_line_ary:
for (l_idx = 0; l_idx < count; ++l_idx) {
if (lineno == info_file->lines.ary[l_idx]) {
return lineno;
}
}
}
else {
break;
case mrb_debug_line_flat_map:
for (l_idx = 0; l_idx < count; ++l_idx) {
if (lineno == info_file->lines.flat_map[l_idx].line) {
return lineno;
}
}
break;
case mrb_debug_line_packed_map:
{
char *p = info_file->lines.packed_map;
char *pend = p + count;
uint32_t line = 0;
while (p < pend) {
packed_int_decode(p, &p);
line += packed_int_decode(p, &p);
if (line == lineno) return lineno;
}
}
break;
}
return 0;
@@ -188,7 +219,7 @@ mrb_debug_set_break_line(mrb_state *mrb, mrb_debug_context *dbg, const char *fil
return MRB_DEBUG_BREAK_NO_OVER;
}
/* file and lineno check (line type mrb_debug_line_ary only.) */
/* file and lineno check. */
result = check_file_lineno(mrb, dbg->root_irep, file, lineno);
if (result == 0) {
return MRB_DEBUG_BREAK_INVALID_FILE;