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// SPDX-License-Identifier: GPL-2.0
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include "debug.h"
#include "symbol.h"
#include "callchain.h"
#include "record.h"
/* On arm64, kernel text segment starts at high memory address,
* for example 0xffff 0000 8xxx xxxx. Modules start at a low memory
* address, like 0xffff 0000 00ax xxxx. When only small amount of
* memory is used by modules, gap between end of module's text segment
* and start of kernel text segment may reach 2G.
* Therefore do not fill this gap and do not assign it to the kernel dso map.
*/
#define SYMBOL_LIMIT (1 << 12) /* 4K */
void arch__symbols__fixup_end(struct symbol *p, struct symbol *c)
{
if ((strchr(p->name, '[') && strchr(c->name, '[') == NULL) ||
(strchr(p->name, '[') == NULL && strchr(c->name, '[')))
/* Limit range of last symbol in module and kernel */
p->end += SYMBOL_LIMIT;
else
p->end = c->start;
pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
}
void arch__add_leaf_frame_record_opts(struct record_opts *opts)
{
opts->sample_user_regs |= sample_reg_masks[PERF_REG_ARM64_LR].mask;
}
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