| /* Target-dependent code for GDB, the GNU debugger. |
| |
| Copyright (C) 2000-2005, 2007-2012 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 PPC_TDEP_H |
| #define PPC_TDEP_H |
| |
| struct gdbarch; |
| struct frame_info; |
| struct value; |
| struct regcache; |
| struct type; |
| |
| /* From ppc-sysv-tdep.c ... */ |
| enum return_value_convention ppc_sysv_abi_return_value (struct gdbarch *gdbarch, |
| struct value *function, |
| struct type *valtype, |
| struct regcache *regcache, |
| gdb_byte *readbuf, |
| const gdb_byte *writebuf); |
| enum return_value_convention ppc_sysv_abi_broken_return_value (struct gdbarch *gdbarch, |
| struct value *function, |
| struct type *valtype, |
| struct regcache *regcache, |
| gdb_byte *readbuf, |
| const gdb_byte *writebuf); |
| CORE_ADDR ppc_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, |
| struct value *function, |
| struct regcache *regcache, |
| CORE_ADDR bp_addr, int nargs, |
| struct value **args, CORE_ADDR sp, |
| int struct_return, |
| CORE_ADDR struct_addr); |
| CORE_ADDR ppc64_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, |
| struct value *function, |
| struct regcache *regcache, |
| CORE_ADDR bp_addr, int nargs, |
| struct value **args, CORE_ADDR sp, |
| int struct_return, |
| CORE_ADDR struct_addr); |
| enum return_value_convention ppc64_sysv_abi_return_value (struct gdbarch *gdbarch, |
| struct value *function, |
| struct type *valtype, |
| struct regcache *regcache, |
| gdb_byte *readbuf, |
| const gdb_byte *writebuf); |
| |
| /* From rs6000-tdep.c... */ |
| int altivec_register_p (struct gdbarch *gdbarch, int regno); |
| int vsx_register_p (struct gdbarch *gdbarch, int regno); |
| int spe_register_p (struct gdbarch *gdbarch, int regno); |
| |
| /* Return non-zero if the architecture described by GDBARCH has |
| floating-point registers (f0 --- f31 and fpscr). */ |
| int ppc_floating_point_unit_p (struct gdbarch *gdbarch); |
| |
| /* Return non-zero if the architecture described by GDBARCH has |
| Altivec registers (vr0 --- vr31, vrsave and vscr). */ |
| int ppc_altivec_support_p (struct gdbarch *gdbarch); |
| |
| /* Return non-zero if the architecture described by GDBARCH has |
| VSX registers (vsr0 --- vsr63). */ |
| int vsx_support_p (struct gdbarch *gdbarch); |
| int ppc_deal_with_atomic_sequence (struct frame_info *frame); |
| |
| |
| /* Register set description. */ |
| |
| struct ppc_reg_offsets |
| { |
| /* General-purpose registers. */ |
| int r0_offset; |
| int gpr_size; /* size for r0-31, pc, ps, lr, ctr. */ |
| int xr_size; /* size for cr, xer, mq. */ |
| int pc_offset; |
| int ps_offset; |
| int cr_offset; |
| int lr_offset; |
| int ctr_offset; |
| int xer_offset; |
| int mq_offset; |
| |
| /* Floating-point registers. */ |
| int f0_offset; |
| int fpscr_offset; |
| int fpscr_size; |
| |
| /* AltiVec registers. */ |
| int vr0_offset; |
| int vscr_offset; |
| int vrsave_offset; |
| }; |
| |
| extern void ppc_supply_reg (struct regcache *regcache, int regnum, |
| const gdb_byte *regs, size_t offset, int regsize); |
| |
| extern void ppc_collect_reg (const struct regcache *regcache, int regnum, |
| gdb_byte *regs, size_t offset, int regsize); |
| |
| /* Supply register REGNUM in the general-purpose register set REGSET |
| from the buffer specified by GREGS and LEN to register cache |
| REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ |
| |
| extern void ppc_supply_gregset (const struct regset *regset, |
| struct regcache *regcache, |
| int regnum, const void *gregs, size_t len); |
| |
| /* Supply register REGNUM in the floating-point register set REGSET |
| from the buffer specified by FPREGS and LEN to register cache |
| REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ |
| |
| extern void ppc_supply_fpregset (const struct regset *regset, |
| struct regcache *regcache, |
| int regnum, const void *fpregs, size_t len); |
| |
| /* Supply register REGNUM in the Altivec register set REGSET |
| from the buffer specified by VRREGS and LEN to register cache |
| REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ |
| |
| extern void ppc_supply_vrregset (const struct regset *regset, |
| struct regcache *regcache, |
| int regnum, const void *vrregs, size_t len); |
| |
| /* Supply register REGNUM in the VSX register set REGSET |
| from the buffer specified by VSXREGS and LEN to register cache |
| REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ |
| |
| extern void ppc_supply_vsxregset (const struct regset *regset, |
| struct regcache *regcache, |
| int regnum, const void *vsxregs, size_t len); |
| |
| /* Collect register REGNUM in the general-purpose register set |
| REGSET, from register cache REGCACHE into the buffer specified by |
| GREGS and LEN. If REGNUM is -1, do this for all registers in |
| REGSET. */ |
| |
| extern void ppc_collect_gregset (const struct regset *regset, |
| const struct regcache *regcache, |
| int regnum, void *gregs, size_t len); |
| |
| /* Collect register REGNUM in the floating-point register set |
| REGSET, from register cache REGCACHE into the buffer specified by |
| FPREGS and LEN. If REGNUM is -1, do this for all registers in |
| REGSET. */ |
| |
| extern void ppc_collect_fpregset (const struct regset *regset, |
| const struct regcache *regcache, |
| int regnum, void *fpregs, size_t len); |
| |
| /* Collect register REGNUM in the Altivec register set |
| REGSET from register cache REGCACHE into the buffer specified by |
| VRREGS and LEN. If REGNUM is -1, do this for all registers in |
| REGSET. */ |
| |
| extern void ppc_collect_vrregset (const struct regset *regset, |
| const struct regcache *regcache, |
| int regnum, void *vrregs, size_t len); |
| |
| /* Collect register REGNUM in the VSX register set |
| REGSET from register cache REGCACHE into the buffer specified by |
| VSXREGS and LEN. If REGNUM is -1, do this for all registers in |
| REGSET. */ |
| |
| extern void ppc_collect_vsxregset (const struct regset *regset, |
| const struct regcache *regcache, |
| int regnum, void *vsxregs, size_t len); |
| |
| /* Private data that this module attaches to struct gdbarch. */ |
| |
| /* Vector ABI used by the inferior. */ |
| enum powerpc_vector_abi |
| { |
| POWERPC_VEC_AUTO, |
| POWERPC_VEC_GENERIC, |
| POWERPC_VEC_ALTIVEC, |
| POWERPC_VEC_SPE, |
| POWERPC_VEC_LAST |
| }; |
| |
| struct gdbarch_tdep |
| { |
| int wordsize; /* Size in bytes of fixed-point word. */ |
| int soft_float; /* Avoid FP registers for arguments? */ |
| |
| /* How to pass vector arguments. Never set to AUTO or LAST. */ |
| enum powerpc_vector_abi vector_abi; |
| |
| int ppc_gp0_regnum; /* GPR register 0 */ |
| int ppc_toc_regnum; /* TOC register */ |
| int ppc_ps_regnum; /* Processor (or machine) status (%msr) */ |
| int ppc_cr_regnum; /* Condition register */ |
| int ppc_lr_regnum; /* Link register */ |
| int ppc_ctr_regnum; /* Count register */ |
| int ppc_xer_regnum; /* Integer exception register */ |
| |
| /* Not all PPC and RS6000 variants will have the registers |
| represented below. A -1 is used to indicate that the register |
| is not present in this variant. */ |
| |
| /* Floating-point registers. */ |
| int ppc_fp0_regnum; /* Floating-point register 0. */ |
| int ppc_fpscr_regnum; /* fp status and condition register. */ |
| |
| /* Multiplier-Quotient Register (older POWER architectures only). */ |
| int ppc_mq_regnum; |
| |
| /* POWER7 VSX registers. */ |
| int ppc_vsr0_regnum; /* First VSX register. */ |
| int ppc_vsr0_upper_regnum; /* First right most dword vsx register. */ |
| int ppc_efpr0_regnum; /* First Extended FP register. */ |
| |
| /* Altivec registers. */ |
| int ppc_vr0_regnum; /* First AltiVec register. */ |
| int ppc_vrsave_regnum; /* Last AltiVec register. */ |
| |
| /* SPE registers. */ |
| int ppc_ev0_upper_regnum; /* First GPR upper half register. */ |
| int ppc_ev0_regnum; /* First ev register. */ |
| int ppc_acc_regnum; /* SPE 'acc' register. */ |
| int ppc_spefscr_regnum; /* SPE 'spefscr' register. */ |
| |
| /* Decimal 128 registers. */ |
| int ppc_dl0_regnum; /* First Decimal128 argument register pair. */ |
| |
| /* Offset to ABI specific location where link register is saved. */ |
| int lr_frame_offset; |
| |
| /* An array of integers, such that sim_regno[I] is the simulator |
| register number for GDB register number I, or -1 if the |
| simulator does not implement that register. */ |
| int *sim_regno; |
| |
| /* ISA-specific types. */ |
| struct type *ppc_builtin_type_vec64; |
| struct type *ppc_builtin_type_vec128; |
| }; |
| |
| |
| /* Constants for register set sizes. */ |
| enum |
| { |
| ppc_num_gprs = 32, /* 32 general-purpose registers. */ |
| ppc_num_fprs = 32, /* 32 floating-point registers. */ |
| ppc_num_srs = 16, /* 16 segment registers. */ |
| ppc_num_vrs = 32, /* 32 Altivec vector registers. */ |
| ppc_num_vshrs = 32, /* 32 doublewords (dword 1 of vs0~vs31). */ |
| ppc_num_vsrs = 64, /* 64 VSX vector registers. */ |
| ppc_num_efprs = 32 /* 32 Extended FP registers. */ |
| }; |
| |
| |
| /* Register number constants. These are GDB internal register |
| numbers; they are not used for the simulator or remote targets. |
| Extra SPRs (those other than MQ, CTR, LR, XER, SPEFSCR) are given |
| numbers above PPC_NUM_REGS. So are segment registers and other |
| target-defined registers. */ |
| enum { |
| PPC_R0_REGNUM = 0, |
| PPC_F0_REGNUM = 32, |
| PPC_PC_REGNUM = 64, |
| PPC_MSR_REGNUM = 65, |
| PPC_CR_REGNUM = 66, |
| PPC_LR_REGNUM = 67, |
| PPC_CTR_REGNUM = 68, |
| PPC_XER_REGNUM = 69, |
| PPC_FPSCR_REGNUM = 70, |
| PPC_MQ_REGNUM = 71, |
| PPC_SPE_UPPER_GP0_REGNUM = 72, |
| PPC_SPE_ACC_REGNUM = 104, |
| PPC_SPE_FSCR_REGNUM = 105, |
| PPC_VR0_REGNUM = 106, |
| PPC_VSCR_REGNUM = 138, |
| PPC_VRSAVE_REGNUM = 139, |
| PPC_VSR0_UPPER_REGNUM = 140, |
| PPC_VSR31_UPPER_REGNUM = 171, |
| PPC_NUM_REGS |
| }; |
| |
| |
| /* Instruction size. */ |
| #define PPC_INSN_SIZE 4 |
| |
| /* Estimate for the maximum number of instrctions in a function epilogue. */ |
| #define PPC_MAX_EPILOGUE_INSTRUCTIONS 52 |
| |
| #endif /* ppc-tdep.h */ |