/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 *
 * Copyright (C) 2015 Naveen N. Rao, IBM Corporation
 */

#include "debug.h"
#include "symbol.h"
#include "map.h"
#include "probe-event.h"

#ifdef HAVE_LIBELF_SUPPORT
bool elf__needs_adjust_symbols(GElf_Ehdr ehdr)
{
	return ehdr.e_type == ET_EXEC ||
	       ehdr.e_type == ET_REL ||
	       ehdr.e_type == ET_DYN;
}

#endif

#if !defined(_CALL_ELF) || _CALL_ELF != 2
int arch__choose_best_symbol(struct symbol *syma,
			     struct symbol *symb __maybe_unused)
{
	char *sym = syma->name;

	/* Skip over any initial dot */
	if (*sym == '.')
		sym++;

	/* Avoid "SyS" kernel syscall aliases */
	if (strlen(sym) >= 3 && !strncmp(sym, "SyS", 3))
		return SYMBOL_B;
	if (strlen(sym) >= 10 && !strncmp(sym, "compat_SyS", 10))
		return SYMBOL_B;

	return SYMBOL_A;
}

/* Allow matching against dot variants */
int arch__compare_symbol_names(const char *namea, const char *nameb)
{
	/* Skip over initial dot */
	if (*namea == '.')
		namea++;
	if (*nameb == '.')
		nameb++;

	return strcmp(namea, nameb);
}
#endif

#if defined(_CALL_ELF) && _CALL_ELF == 2

#ifdef HAVE_LIBELF_SUPPORT
void arch__sym_update(struct symbol *s, GElf_Sym *sym)
{
	s->arch_sym = sym->st_other;
}
#endif

#define PPC64LE_LEP_OFFSET	8

void arch__fix_tev_from_maps(struct perf_probe_event *pev,
			     struct probe_trace_event *tev, struct map *map,
			     struct symbol *sym)
{
	int lep_offset;

	/*
	 * When probing at a function entry point, we normally always want the
	 * LEP since that catches calls to the function through both the GEP and
	 * the LEP. Hence, we would like to probe at an offset of 8 bytes if
	 * the user only specified the function entry.
	 *
	 * However, if the user specifies an offset, we fall back to using the
	 * GEP since all userspace applications (objdump/readelf) show function
	 * disassembly with offsets from the GEP.
	 *
	 * In addition, we shouldn't specify an offset for kretprobes.
	 */
	if (pev->point.offset || (!pev->uprobes && pev->point.retprobe) ||
	    !map || !sym)
		return;

	lep_offset = PPC64_LOCAL_ENTRY_OFFSET(sym->arch_sym);

	if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS)
		tev->point.offset += PPC64LE_LEP_OFFSET;
	else if (lep_offset) {
		if (pev->uprobes)
			tev->point.address += lep_offset;
		else
			tev->point.offset += lep_offset;
	}
}

#ifdef HAVE_LIBELF_SUPPORT
void arch__post_process_probe_trace_events(struct perf_probe_event *pev,
					   int ntevs)
{
	struct probe_trace_event *tev;
	struct map *map;
	struct symbol *sym = NULL;
	struct rb_node *tmp;
	int i = 0;

	map = get_target_map(pev->target, pev->uprobes);
	if (!map || map__load(map) < 0)
		return;

	for (i = 0; i < ntevs; i++) {
		tev = &pev->tevs[i];
		map__for_each_symbol(map, sym, tmp) {
			if (map->unmap_ip(map, sym->start) == tev->point.address)
				arch__fix_tev_from_maps(pev, tev, map, sym);
		}
	}
}
#endif /* HAVE_LIBELF_SUPPORT */

#endif
/sound?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>pci</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ctxfi?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>ctxfi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ctxfi/ctatc.c?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>ctatc.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='883af14e67e8b8702b5560aa64c888c0cd0bd66c'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-24 16:54:39 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-24 16:54:39 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ctxfi/ctatc.c?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>883af14e67e8b8702b5560aa64c888c0cd0bd66c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/pci/ctxfi/ctatc.c?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>74e3a6b53f5fad9f7848ab1b9f6921b7012940a4</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/pci/ctxfi/ctatc.c?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>sound/pci/ctxfi/ctatc.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ctxfi/ctatc.c?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>0263d4ebd94b36280608e296cba39b924b6e832b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/ctxfi/ctatc.c?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c&amp;id2=0263d4ebd94b36280608e296cba39b924b6e832b'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ctxfi/ctatc.c?h=nds-private-remove&amp;id=aab45453ff5c77200c6da4ac909f7a4392aed17e'>aab45453ff5c77200c6da4ac909f7a4392aed17e</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/ctxfi/ctatc.c?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c&amp;id2=aab45453ff5c77200c6da4ac909f7a4392aed17e'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'akpm' (patches from Andrew)</div><div class='commit-msg'>Merge fixes from Andrew Morton:
 "26 fixes"

* emailed patches from Andrew Morton &lt;akpm@linux-foundation.org&gt;: (26 commits)
  MAINTAINERS: add Dan Streetman to zbud maintainers
  MAINTAINERS: add Dan Streetman to zswap maintainers
  mm: do not export ioremap_page_range symbol for external module
  mn10300: fix build error of missing fpu_save()
  romfs: use different way to generate fsid for BLOCK or MTD
  frv: add missing atomic64 operations
  mm, page_alloc: fix premature OOM when racing with cpuset mems update
  mm, page_alloc: move cpuset seqcount checking to slowpath
  mm, page_alloc: fix fast-path race with cpuset update or removal
  mm, page_alloc: fix check for NULL preferred_zone
  kernel/panic.c: add missing \n
  fbdev: color map copying bounds checking
  frv: add atomic64_add_unless()
  mm/mempolicy.c: do not put mempolicy before using its nodemask
  radix-tree: fix private list warnings
  Documentation/filesystems/proc.txt: add VmPin
  mm, memcg: do not retry precharge charges
  proc: add a schedule point in proc_pid_readdir()
  mm: alloc_contig: re-allow CMA to compact FS pages
  mm/slub.c: trace free objects at KERN_INFO
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>Diffstat</a> (limited to 'sound/pci/ctxfi/ctatc.c')</div><table summary='diffstat' class='diffstat'>