/* Target-dependent code for GDB, the GNU debugger. Copyright (C) 2000-2017 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 . */ #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. */ /* ELF ABI version used by the inferior. */ enum powerpc_elf_abi { POWERPC_ELF_AUTO, POWERPC_ELF_V1, POWERPC_ELF_V2, POWERPC_ELF_LAST }; /* 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? */ enum powerpc_elf_abi elf_abi; /* ELF ABI version. */ /* 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; int (*ppc_syscall_record) (struct regcache *regcache); }; /* 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 }; /* An instruction to match. */ struct ppc_insn_pattern { unsigned int mask; /* mask the insn with this... */ unsigned int data; /* ...and see if it matches this. */ int optional; /* If non-zero, this insn may be absent. */ }; extern int ppc_insns_match_pattern (struct frame_info *frame, CORE_ADDR pc, struct ppc_insn_pattern *pattern, unsigned int *insns); extern CORE_ADDR ppc_insn_d_field (unsigned int insn); extern CORE_ADDR ppc_insn_ds_field (unsigned int insn); extern int ppc_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr); /* 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 */