mirror of
https://github.com/qemu/qemu.git
synced 2024-11-23 19:03:38 +08:00
327b75a469
tcg/ should not depend on accel/tcg/, but perf and debuginfo support provided by the latter are being used by tcg/tcg.c. Since that's the only user, move both to tcg/. Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20231212003837.64090-5-iii@linux.ibm.com> Message-Id: <20240125054631.78867-5-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
/*
|
|
* Debug information support.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/lockable.h"
|
|
#include "tcg/debuginfo.h"
|
|
|
|
#include <elfutils/libdwfl.h>
|
|
|
|
static QemuMutex lock;
|
|
static Dwfl *dwfl;
|
|
static const Dwfl_Callbacks dwfl_callbacks = {
|
|
.find_elf = NULL,
|
|
.find_debuginfo = dwfl_standard_find_debuginfo,
|
|
.section_address = NULL,
|
|
.debuginfo_path = NULL,
|
|
};
|
|
|
|
__attribute__((constructor))
|
|
static void debuginfo_init(void)
|
|
{
|
|
qemu_mutex_init(&lock);
|
|
}
|
|
|
|
void debuginfo_report_elf(const char *name, int fd, uint64_t bias)
|
|
{
|
|
QEMU_LOCK_GUARD(&lock);
|
|
|
|
if (dwfl) {
|
|
dwfl_report_begin_add(dwfl);
|
|
} else {
|
|
dwfl = dwfl_begin(&dwfl_callbacks);
|
|
}
|
|
|
|
if (dwfl) {
|
|
dwfl_report_elf(dwfl, name, name, fd, bias, true);
|
|
dwfl_report_end(dwfl, NULL, NULL);
|
|
}
|
|
}
|
|
|
|
void debuginfo_lock(void)
|
|
{
|
|
qemu_mutex_lock(&lock);
|
|
}
|
|
|
|
void debuginfo_query(struct debuginfo_query *q, size_t n)
|
|
{
|
|
const char *symbol, *file;
|
|
Dwfl_Module *dwfl_module;
|
|
Dwfl_Line *dwfl_line;
|
|
GElf_Off dwfl_offset;
|
|
GElf_Sym dwfl_sym;
|
|
size_t i;
|
|
int line;
|
|
|
|
if (!dwfl) {
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < n; i++) {
|
|
dwfl_module = dwfl_addrmodule(dwfl, q[i].address);
|
|
if (!dwfl_module) {
|
|
continue;
|
|
}
|
|
|
|
if (q[i].flags & DEBUGINFO_SYMBOL) {
|
|
symbol = dwfl_module_addrinfo(dwfl_module, q[i].address,
|
|
&dwfl_offset, &dwfl_sym,
|
|
NULL, NULL, NULL);
|
|
if (symbol) {
|
|
q[i].symbol = symbol;
|
|
q[i].offset = dwfl_offset;
|
|
}
|
|
}
|
|
|
|
if (q[i].flags & DEBUGINFO_LINE) {
|
|
dwfl_line = dwfl_module_getsrc(dwfl_module, q[i].address);
|
|
if (dwfl_line) {
|
|
file = dwfl_lineinfo(dwfl_line, NULL, &line, 0, NULL, NULL);
|
|
if (file) {
|
|
q[i].file = file;
|
|
q[i].line = line;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void debuginfo_unlock(void)
|
|
{
|
|
qemu_mutex_unlock(&lock);
|
|
}
|