/*
 * Mapping of DWARF debug register numbers into register names.
 *
 * Copyright (C) 2010 Will Deacon, ARM Ltd.
 *
 * 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.
 */

#include <stddef.h>
#include <dwarf-regs.h>

struct pt_regs_dwarfnum {
	const char *name;
	unsigned int dwarfnum;
};

#define STR(s) #s
#define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num}
#define GPR_DWARFNUM_NAME(num) \
	{.name = STR(%x##num), .dwarfnum = num}
#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0}

/*
 * Reference:
 * http://infocenter.arm.com/help/topic/com.arm.doc.ihi0057b/IHI0057B_aadwarf64.pdf
 */
static const struct pt_regs_dwarfnum regdwarfnum_table[] = {
	GPR_DWARFNUM_NAME(0),
	GPR_DWARFNUM_NAME(1),
	GPR_DWARFNUM_NAME(2),
	GPR_DWARFNUM_NAME(3),
	GPR_DWARFNUM_NAME(4),
	GPR_DWARFNUM_NAME(5),
	GPR_DWARFNUM_NAME(6),
	GPR_DWARFNUM_NAME(7),
	GPR_DWARFNUM_NAME(8),
	GPR_DWARFNUM_NAME(9),
	GPR_DWARFNUM_NAME(10),
	GPR_DWARFNUM_NAME(11),
	GPR_DWARFNUM_NAME(12),
	GPR_DWARFNUM_NAME(13),
	GPR_DWARFNUM_NAME(14),
	GPR_DWARFNUM_NAME(15),
	GPR_DWARFNUM_NAME(16),
	GPR_DWARFNUM_NAME(17),
	GPR_DWARFNUM_NAME(18),
	GPR_DWARFNUM_NAME(19),
	GPR_DWARFNUM_NAME(20),
	GPR_DWARFNUM_NAME(21),
	GPR_DWARFNUM_NAME(22),
	GPR_DWARFNUM_NAME(23),
	GPR_DWARFNUM_NAME(24),
	GPR_DWARFNUM_NAME(25),
	GPR_DWARFNUM_NAME(26),
	GPR_DWARFNUM_NAME(27),
	GPR_DWARFNUM_NAME(28),
	GPR_DWARFNUM_NAME(29),
	REG_DWARFNUM_NAME("%lr", 30),
	REG_DWARFNUM_NAME("%sp", 31),
	REG_DWARFNUM_END,
};

/**
 * get_arch_regstr() - lookup register name from it's DWARF register number
 * @n:	the DWARF register number
 *
 * get_arch_regstr() returns the name of the register in struct
 * regdwarfnum_table from it's DWARF register number. If the register is not
 * found in the table, this returns NULL;
 */
const char *get_arch_regstr(unsigned int n)
{
	const struct pt_regs_dwarfnum *roff;
	for (roff = regdwarfnum_table; roff->name != NULL; roff++)
		if (roff->dwarfnum == n)
			return roff->name;
	return NULL;
}
net-next.git/log/tools'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=1a6aa36b6f92b1a2f2e6789f6785372d4d6ddca9&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?id=1a6aa36b6f92b1a2f2e6789f6785372d4d6ddca9&amp;showmsg=1'>tools</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools?id=1a6aa36b6f92b1a2f2e6789f6785372d4d6ddca9'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr class='logheader'><td><span title='2017-02-07 16:29:30 -0500'>2017-02-07</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/tools?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>David S. Miller