- /* SPU target-dependent code for GDB, the GNU debugger.
- Copyright (C) 2006-2015 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