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darling-gdb/gdb/ppc-tdep.h
Paul Gilliam 0d1243d9e6 2006-01-16 Paul Gilliam <pgilliam@us.ibm.com> 
* ppc-tdep.h (PPC_MAX_EPILOGUE_INSTRUCTIONS): New define.
	* rs6000-tdep.c (insn_changes_sp_or_jumps)
	(rs6000_in_function_epilogue_p): New functions.
	(rs6000_gdbarch_init): Set in_function_epilogue_p.
2006-01-17 22:21:13 +00:00

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/* Target-dependent code for GDB, the GNU debugger.
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005
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 2 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifndef PPC_TDEP_H
#define PPC_TDEP_H
struct gdbarch;
struct frame_info;
struct value;
struct regcache;
struct type;
/* From ppc-linux-tdep.c... */
enum return_value_convention ppc_sysv_abi_return_value (struct gdbarch *gdbarch,
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 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);
CORE_ADDR ppc64_sysv_abi_adjust_breakpoint_address (struct gdbarch *gdbarch,
CORE_ADDR bpaddr);
int ppc_linux_memory_remove_breakpoint (CORE_ADDR addr,
gdb_byte *contents_cache);
struct link_map_offsets *ppc_linux_svr4_fetch_link_map_offsets (void);
void ppc_linux_supply_gregset (struct regcache *regcache,
int regnum, const void *gregs, size_t size,
int wordsize);
void ppc_linux_supply_fpregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t size);
enum return_value_convention ppc64_sysv_abi_return_value (struct gdbarch *gdbarch,
struct type *valtype,
struct regcache *regcache,
gdb_byte *readbuf,
const gdb_byte *writebuf);
/* From rs6000-tdep.c... */
int altivec_register_p (int regno);
int spe_register_p (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);
/* Register set description. */
struct ppc_reg_offsets
{
/* General-purpose registers. */
int r0_offset;
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;
/* AltiVec registers. */
int vr0_offset;
int vscr_offset;
int vrsave_offset;
};
/* 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);
/* 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);
/* Private data that this module attaches to struct gdbarch. */
struct gdbarch_tdep
{
int wordsize; /* size in bytes of fixed-point word */
const struct reg *regs; /* from current variant */
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 */
/* Segment registers. */
int ppc_sr0_regnum; /* segment register 0 */
/* Multiplier-Quotient Register (older POWER architectures only). */
int ppc_mq_regnum;
/* 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_ev31_regnum; /* Last ev register */
int ppc_acc_regnum; /* SPE 'acc' register */
int ppc_spefscr_regnum; /* SPE 'spefscr' register */
/* 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;
};
/* 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 */
};
/* Constants for SPR register numbers. These are *not* GDB register
numbers: they are the numbers used in the PowerPC ISA itself to
refer to these registers.
This table includes all the SPRs from all the variants I could find
documentation for.
There may be registers from different PowerPC variants assigned the
same number, but that's fine: GDB and the SIM always use the
numbers in the context of a particular variant, so it's not
ambiguous.
We need to deviate from the naming pattern when variants have
special-purpose registers of the same name, but with different
numbers. Fortunately, this is rare: look below to see how we
handle the 'tcr' registers on the 403/403GX and 602. */
enum
{
ppc_spr_mq = 0,
ppc_spr_xer = 1,
ppc_spr_rtcu = 4,
ppc_spr_rtcl = 5,
ppc_spr_lr = 8,
ppc_spr_ctr = 9,
ppc_spr_cnt = 9,
ppc_spr_dsisr = 18,
ppc_spr_dar = 19,
ppc_spr_dec = 22,
ppc_spr_sdr1 = 25,
ppc_spr_srr0 = 26,
ppc_spr_srr1 = 27,
ppc_spr_eie = 80,
ppc_spr_eid = 81,
ppc_spr_nri = 82,
ppc_spr_sp = 102,
ppc_spr_cmpa = 144,
ppc_spr_cmpb = 145,
ppc_spr_cmpc = 146,
ppc_spr_cmpd = 147,
ppc_spr_icr = 148,
ppc_spr_der = 149,
ppc_spr_counta = 150,
ppc_spr_countb = 151,
ppc_spr_cmpe = 152,
ppc_spr_cmpf = 153,
ppc_spr_cmpg = 154,
ppc_spr_cmph = 155,
ppc_spr_lctrl1 = 156,
ppc_spr_lctrl2 = 157,
ppc_spr_ictrl = 158,
ppc_spr_bar = 159,
ppc_spr_vrsave = 256,
ppc_spr_sprg0 = 272,
ppc_spr_sprg1 = 273,
ppc_spr_sprg2 = 274,
ppc_spr_sprg3 = 275,
ppc_spr_asr = 280,
ppc_spr_ear = 282,
ppc_spr_tbl = 284,
ppc_spr_tbu = 285,
ppc_spr_pvr = 287,
ppc_spr_spefscr = 512,
ppc_spr_ibat0u = 528,
ppc_spr_ibat0l = 529,
ppc_spr_ibat1u = 530,
ppc_spr_ibat1l = 531,
ppc_spr_ibat2u = 532,
ppc_spr_ibat2l = 533,
ppc_spr_ibat3u = 534,
ppc_spr_ibat3l = 535,
ppc_spr_dbat0u = 536,
ppc_spr_dbat0l = 537,
ppc_spr_dbat1u = 538,
ppc_spr_dbat1l = 539,
ppc_spr_dbat2u = 540,
ppc_spr_dbat2l = 541,
ppc_spr_dbat3u = 542,
ppc_spr_dbat3l = 543,
ppc_spr_ic_cst = 560,
ppc_spr_ic_adr = 561,
ppc_spr_ic_dat = 562,
ppc_spr_dc_cst = 568,
ppc_spr_dc_adr = 569,
ppc_spr_dc_dat = 570,
ppc_spr_dpdr = 630,
ppc_spr_dpir = 631,
ppc_spr_immr = 638,
ppc_spr_mi_ctr = 784,
ppc_spr_mi_ap = 786,
ppc_spr_mi_epn = 787,
ppc_spr_mi_twc = 789,
ppc_spr_mi_rpn = 790,
ppc_spr_mi_cam = 816,
ppc_spr_mi_ram0 = 817,
ppc_spr_mi_ram1 = 818,
ppc_spr_md_ctr = 792,
ppc_spr_m_casid = 793,
ppc_spr_md_ap = 794,
ppc_spr_md_epn = 795,
ppc_spr_m_twb = 796,
ppc_spr_md_twc = 797,
ppc_spr_md_rpn = 798,
ppc_spr_m_tw = 799,
ppc_spr_mi_dbcam = 816,
ppc_spr_mi_dbram0 = 817,
ppc_spr_mi_dbram1 = 818,
ppc_spr_md_dbcam = 824,
ppc_spr_md_cam = 824,
ppc_spr_md_dbram0 = 825,
ppc_spr_md_ram0 = 825,
ppc_spr_md_dbram1 = 826,
ppc_spr_md_ram1 = 826,
ppc_spr_ummcr0 = 936,
ppc_spr_upmc1 = 937,
ppc_spr_upmc2 = 938,
ppc_spr_usia = 939,
ppc_spr_ummcr1 = 940,
ppc_spr_upmc3 = 941,
ppc_spr_upmc4 = 942,
ppc_spr_zpr = 944,
ppc_spr_pid = 945,
ppc_spr_mmcr0 = 952,
ppc_spr_pmc1 = 953,
ppc_spr_sgr = 953,
ppc_spr_pmc2 = 954,
ppc_spr_dcwr = 954,
ppc_spr_sia = 955,
ppc_spr_mmcr1 = 956,
ppc_spr_pmc3 = 957,
ppc_spr_pmc4 = 958,
ppc_spr_sda = 959,
ppc_spr_tbhu = 972,
ppc_spr_tblu = 973,
ppc_spr_dmiss = 976,
ppc_spr_dcmp = 977,
ppc_spr_hash1 = 978,
ppc_spr_hash2 = 979,
ppc_spr_icdbdr = 979,
ppc_spr_imiss = 980,
ppc_spr_esr = 980,
ppc_spr_icmp = 981,
ppc_spr_dear = 981,
ppc_spr_rpa = 982,
ppc_spr_evpr = 982,
ppc_spr_cdbcr = 983,
ppc_spr_tsr = 984,
ppc_spr_602_tcr = 984,
ppc_spr_403_tcr = 986,
ppc_spr_ibr = 986,
ppc_spr_pit = 987,
ppc_spr_esasrr = 988,
ppc_spr_tbhi = 988,
ppc_spr_tblo = 989,
ppc_spr_srr2 = 990,
ppc_spr_sebr = 990,
ppc_spr_srr3 = 991,
ppc_spr_ser = 991,
ppc_spr_hid0 = 1008,
ppc_spr_dbsr = 1008,
ppc_spr_hid1 = 1009,
ppc_spr_iabr = 1010,
ppc_spr_dbcr = 1010,
ppc_spr_iac1 = 1012,
ppc_spr_dabr = 1013,
ppc_spr_iac2 = 1013,
ppc_spr_dac1 = 1014,
ppc_spr_dac2 = 1015,
ppc_spr_l2cr = 1017,
ppc_spr_dccr = 1018,
ppc_spr_ictc = 1019,
ppc_spr_iccr = 1019,
ppc_spr_thrm1 = 1020,
ppc_spr_pbl1 = 1020,
ppc_spr_thrm2 = 1021,
ppc_spr_pbu1 = 1021,
ppc_spr_thrm3 = 1022,
ppc_spr_pbl2 = 1022,
ppc_spr_fpecr = 1022,
ppc_spr_lt = 1022,
ppc_spr_pir = 1023,
ppc_spr_pbu2 = 1023
};
/* 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 */
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