Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Mapping of DWARF debug register numbers into register names.
|
|
*
|
|
* Copyright (C) 2010 Ian Munsie, IBM Corporation.
|
|
*/
|
|
|
|
#include <dwarf-regs.h>
|
|
|
|
#define PPC_OP(op) (((op) >> 26) & 0x3F)
|
|
#define PPC_RA(a) (((a) >> 16) & 0x1f)
|
|
#define PPC_RT(t) (((t) >> 21) & 0x1f)
|
|
#define PPC_RB(b) (((b) >> 11) & 0x1f)
|
|
#define PPC_D(D) ((D) & 0xfffe)
|
|
#define PPC_DS(DS) ((DS) & 0xfffc)
|
|
#define OP_LD 58
|
|
#define OP_STD 62
|
|
|
|
static int get_source_reg(u32 raw_insn)
|
|
{
|
|
return PPC_RA(raw_insn);
|
|
}
|
|
|
|
static int get_target_reg(u32 raw_insn)
|
|
{
|
|
return PPC_RT(raw_insn);
|
|
}
|
|
|
|
static int get_offset_opcode(u32 raw_insn)
|
|
{
|
|
int opcode = PPC_OP(raw_insn);
|
|
|
|
/* DS- form */
|
|
if ((opcode == OP_LD) || (opcode == OP_STD))
|
|
return PPC_DS(raw_insn);
|
|
else
|
|
return PPC_D(raw_insn);
|
|
}
|
|
|
|
/*
|
|
* Fills the required fields for op_loc depending on if it
|
|
* is a source or target.
|
|
* D form: ins RT,D(RA) -> src_reg1 = RA, offset = D, dst_reg1 = RT
|
|
* DS form: ins RT,DS(RA) -> src_reg1 = RA, offset = DS, dst_reg1 = RT
|
|
* X form: ins RT,RA,RB -> src_reg1 = RA, src_reg2 = RB, dst_reg1 = RT
|
|
*/
|
|
void get_powerpc_regs(u32 raw_insn, int is_source,
|
|
struct annotated_op_loc *op_loc)
|
|
{
|
|
if (is_source)
|
|
op_loc->reg1 = get_source_reg(raw_insn);
|
|
else
|
|
op_loc->reg1 = get_target_reg(raw_insn);
|
|
|
|
if (op_loc->multi_regs)
|
|
op_loc->reg2 = PPC_RB(raw_insn);
|
|
|
|
/* TODO: Implement offset handling for X Form */
|
|
if ((op_loc->mem_ref) && (PPC_OP(raw_insn) != 31))
|
|
op_loc->offset = get_offset_opcode(raw_insn);
|
|
}
|