118 lines
4.1 KiB
C
118 lines
4.1 KiB
C
/* SPU target-dependent code for GDB, the GNU debugger.
|
|
Copyright (C) 2006-2012 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef SPU_TDEP_H
|
|
#define SPU_TDEP_H
|
|
|
|
/* Number of registers. */
|
|
#define SPU_NUM_REGS 130
|
|
#define SPU_NUM_PSEUDO_REGS 6
|
|
#define SPU_NUM_GPRS 128
|
|
|
|
/* Register numbers of various important registers. */
|
|
enum spu_regnum
|
|
{
|
|
/* SPU calling convention. */
|
|
SPU_LR_REGNUM = 0, /* Link register. */
|
|
SPU_RAW_SP_REGNUM = 1, /* Stack pointer (full register). */
|
|
SPU_ARG1_REGNUM = 3, /* First argument register. */
|
|
SPU_ARGN_REGNUM = 74, /* Last argument register. */
|
|
SPU_SAVED1_REGNUM = 80, /* First call-saved register. */
|
|
SPU_SAVEDN_REGNUM = 127, /* Last call-saved register. */
|
|
SPU_FP_REGNUM = 127, /* Frame pointer. */
|
|
|
|
/* Special registers. */
|
|
SPU_ID_REGNUM = 128, /* SPU ID register. */
|
|
SPU_PC_REGNUM = 129, /* Next program counter. */
|
|
SPU_SP_REGNUM = 130, /* Stack pointer (preferred slot). */
|
|
SPU_FPSCR_REGNUM = 131, /* Floating point status/control register. */
|
|
SPU_SRR0_REGNUM = 132, /* SRR0 register. */
|
|
SPU_LSLR_REGNUM = 133, /* Local store limit register. */
|
|
SPU_DECR_REGNUM = 134, /* Decrementer value. */
|
|
SPU_DECR_STATUS_REGNUM = 135 /* Decrementer status. */
|
|
};
|
|
|
|
/* Address conversions.
|
|
|
|
In a combined PPU/SPU debugging session, we have to consider multiple
|
|
address spaces: the PPU 32- or 64-bit address space, and the 32-bit
|
|
local store address space for each SPU context. As it is currently
|
|
not yet possible to use the program_space / address_space mechanism
|
|
to represent this, we encode all those addresses into one single
|
|
64-bit address for the whole process. For SPU programs using overlays,
|
|
this address space must also include separate ranges reserved for the
|
|
LMA of overlay sections.
|
|
|
|
|
|
The following combinations are supported for combined debugging:
|
|
|
|
PPU address (this relies on the fact that PPC 64-bit user space
|
|
addresses can never have the highest-most bit set):
|
|
|
|
+-+---------------------------------+
|
|
|0| ADDR [63] |
|
|
+-+---------------------------------+
|
|
|
|
SPU address for SPU context with id SPU (this assumes that SPU
|
|
IDs, which are file descriptors, are never larger than 2^30):
|
|
|
|
+-+-+--------------+----------------+
|
|
|1|0| SPU [30] | ADDR [32] |
|
|
+-+-+--------------+----------------+
|
|
|
|
SPU overlay section LMA for SPU context with id SPU:
|
|
|
|
+-+-+--------------+----------------+
|
|
|1|1| SPU [30] | ADDR [32] |
|
|
+-+-+--------------+----------------+
|
|
|
|
|
|
In SPU stand-alone debugging mode (using spu-linux-nat.c),
|
|
the following combinations are supported:
|
|
|
|
SPU address:
|
|
|
|
+-+-+--------------+----------------+
|
|
|0|0| 0 | ADDR [32] |
|
|
+-+-+--------------+----------------+
|
|
|
|
SPU overlay section LMA:
|
|
|
|
+-+-+--------------+----------------+
|
|
|0|1| 0 | ADDR [32] |
|
|
+-+-+--------------+----------------+
|
|
|
|
|
|
The following macros allow manipulation of addresses in the
|
|
above formats. */
|
|
|
|
#define SPUADDR(spu, addr) \
|
|
((spu) != -1? (ULONGEST)1 << 63 | (ULONGEST)(spu) << 32 | (addr) : (addr))
|
|
|
|
#define SPUADDR_SPU(addr) \
|
|
(((addr) & (ULONGEST)1 << 63) \
|
|
? (int) ((ULONGEST)(addr) >> 32 & 0x3fffffff) \
|
|
: -1)
|
|
|
|
#define SPUADDR_ADDR(addr) \
|
|
(((addr) & (ULONGEST)1 << 63)? (ULONGEST)(addr) & 0xffffffff : (addr))
|
|
|
|
#define SPU_OVERLAY_LMA ((ULONGEST)1 << 62)
|
|
|
|
#endif
|