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/* Target-dependent code for SPARC.
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Copyright (C) 2003-2022 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef SPARC_TDEP_H
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#define SPARC_TDEP_H 1
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#include "gdbarch.h"
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#define SPARC_CORE_REGISTERS \
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"g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \
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"o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", \
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"l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \
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"i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7"
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struct frame_info;
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struct gdbarch;
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struct regcache;
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struct regset;
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struct trad_frame_saved_reg;
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/* Register offsets for the general-purpose register set. */
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struct sparc_gregmap
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{
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int r_psr_offset;
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int r_pc_offset;
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int r_npc_offset;
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int r_y_offset;
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int r_wim_offset;
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int r_tbr_offset;
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int r_g1_offset;
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int r_l0_offset;
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int r_y_size;
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};
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struct sparc_fpregmap
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{
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int r_f0_offset;
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int r_fsr_offset;
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};
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/* SPARC architecture-specific information. */
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struct sparc_gdbarch_tdep : gdbarch_tdep
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{
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/* Register numbers for the PN and nPC registers. The definitions
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for (64-bit) UltraSPARC differ from the (32-bit) SPARC
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definitions. */
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int pc_regnum = 0;
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int npc_regnum = 0;
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/* Register names specific for architecture (sparc32 vs. sparc64) */
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const char * const *fpu_register_names = nullptr;
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size_t fpu_registers_num = 0;
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const char * const *cp0_register_names = nullptr;
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size_t cp0_registers_num = 0;
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/* Register sets. */
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const struct regset *gregset = nullptr;
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size_t sizeof_gregset = 0;
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const struct regset *fpregset = nullptr;
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size_t sizeof_fpregset = 0;
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/* Offset of saved PC in jmp_buf. */
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int jb_pc_offset = 0;
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/* Size of an Procedure Linkage Table (PLT) entry, 0 if we shouldn't
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treat the PLT special when doing prologue analysis. */
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size_t plt_entry_size = 0;
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/* Alternative location for trap return. Used for single-stepping. */
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CORE_ADDR (*step_trap) (struct frame_info *frame, unsigned long insn)
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= nullptr;
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/* ISA-specific data types. */
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struct type *sparc_psr_type = nullptr;
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struct type *sparc_fsr_type = nullptr;
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struct type *sparc64_ccr_type = nullptr;
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struct type *sparc64_pstate_type = nullptr;
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struct type *sparc64_fsr_type = nullptr;
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struct type *sparc64_fprs_type = nullptr;
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};
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/* Register numbers of various important registers. */
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enum sparc_regnum
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{
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SPARC_G0_REGNUM = 0, /* %g0 */
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SPARC_G1_REGNUM,
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SPARC_G2_REGNUM,
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SPARC_G3_REGNUM,
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SPARC_G4_REGNUM,
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SPARC_G5_REGNUM,
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SPARC_G6_REGNUM,
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SPARC_G7_REGNUM, /* %g7 */
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SPARC_O0_REGNUM, /* %o0 */
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SPARC_O1_REGNUM,
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SPARC_O2_REGNUM,
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SPARC_O3_REGNUM,
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SPARC_O4_REGNUM,
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SPARC_O5_REGNUM,
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SPARC_SP_REGNUM, /* %sp (%o6) */
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SPARC_O7_REGNUM, /* %o7 */
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SPARC_L0_REGNUM, /* %l0 */
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SPARC_L1_REGNUM,
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SPARC_L2_REGNUM,
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SPARC_L3_REGNUM,
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SPARC_L4_REGNUM,
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SPARC_L5_REGNUM,
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SPARC_L6_REGNUM,
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SPARC_L7_REGNUM, /* %l7 */
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SPARC_I0_REGNUM, /* %i0 */
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SPARC_I1_REGNUM,
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SPARC_I2_REGNUM,
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SPARC_I3_REGNUM,
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SPARC_I4_REGNUM,
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SPARC_I5_REGNUM,
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SPARC_FP_REGNUM, /* %fp (%i6) */
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SPARC_I7_REGNUM, /* %i7 */
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SPARC_F0_REGNUM, /* %f0 */
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SPARC_F1_REGNUM,
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SPARC_F2_REGNUM,
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SPARC_F3_REGNUM,
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SPARC_F4_REGNUM,
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SPARC_F5_REGNUM,
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SPARC_F6_REGNUM,
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SPARC_F7_REGNUM,
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SPARC_F31_REGNUM /* %f31 */
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= SPARC_F0_REGNUM + 31
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};
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enum sparc32_regnum
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{
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SPARC32_Y_REGNUM /* %y */
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= SPARC_F31_REGNUM + 1,
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SPARC32_PSR_REGNUM, /* %psr */
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SPARC32_WIM_REGNUM, /* %wim */
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SPARC32_TBR_REGNUM, /* %tbr */
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SPARC32_PC_REGNUM, /* %pc */
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SPARC32_NPC_REGNUM, /* %npc */
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SPARC32_FSR_REGNUM, /* %fsr */
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SPARC32_CSR_REGNUM, /* %csr */
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};
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/* Pseudo registers. */
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enum sparc32_pseudo_regnum
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{
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SPARC32_D0_REGNUM = 0, /* %d0 */
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SPARC32_D30_REGNUM /* %d30 */
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= SPARC32_D0_REGNUM + 15
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};
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struct sparc_frame_cache
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{
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/* Base address. */
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CORE_ADDR base;
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CORE_ADDR pc;
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/* Do we have a frame? */
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int frameless_p;
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/* The offset from the base register to the CFA. */
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int frame_offset;
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/* Mask of `local' and `in' registers saved in the register save area. */
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unsigned short int saved_regs_mask;
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/* Mask of `out' registers copied or renamed to their `in' sibling. */
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unsigned char copied_regs_mask;
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/* Do we have a Structure, Union or Quad-Precision return value? */
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int struct_return_p;
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/* Table of saved registers. */
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struct trad_frame_saved_reg *saved_regs;
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};
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/* Fetch the instruction at PC. */
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extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);
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/* Fetch StackGhost Per-Process XOR cookie. */
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extern ULONGEST sparc_fetch_wcookie (struct gdbarch *gdbarch);
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/* Record the effect of a SAVE instruction on CACHE. */
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extern void sparc_record_save_insn (struct sparc_frame_cache *cache);
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/* Do a full analysis of the prologue at PC and update CACHE accordingly. */
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extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch,
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CORE_ADDR pc, CORE_ADDR current_pc,
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struct sparc_frame_cache *cache);
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extern struct sparc_frame_cache *
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sparc_frame_cache (struct frame_info *this_frame, void **this_cache);
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extern struct sparc_frame_cache *
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sparc32_frame_cache (struct frame_info *this_frame, void **this_cache);
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extern int
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sparc_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc);
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extern void sparc_supply_rwindow (struct regcache *regcache,
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CORE_ADDR sp, int regnum);
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extern void sparc_collect_rwindow (const struct regcache *regcache,
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CORE_ADDR sp, int regnum);
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/* Register offsets for SunOS 4. */
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extern const struct sparc_gregmap sparc32_sunos4_gregmap;
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extern const struct sparc_fpregmap sparc32_sunos4_fpregmap;
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extern const struct sparc_fpregmap sparc32_bsd_fpregmap;
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extern void sparc32_supply_gregset (const struct sparc_gregmap *gregmap,
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struct regcache *regcache,
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int regnum, const void *gregs);
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extern void sparc32_collect_gregset (const struct sparc_gregmap *gregmap,
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const struct regcache *regcache,
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int regnum, void *gregs);
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extern void sparc32_supply_fpregset (const struct sparc_fpregmap *fpregmap,
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struct regcache *regcache,
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int regnum, const void *fpregs);
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extern void sparc32_collect_fpregset (const struct sparc_fpregmap *fpregmap,
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const struct regcache *regcache,
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int regnum, void *fpregs);
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extern int sparc_is_annulled_branch_insn (CORE_ADDR pc);
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/* Functions and variables exported from sparc-sol2-tdep.c. */
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/* Register offsets for Solaris 2. */
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extern const struct sparc_gregmap sparc32_sol2_gregmap;
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extern const struct sparc_fpregmap sparc32_sol2_fpregmap;
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/* Functions and variables exported from sparc-netbsd-tdep.c. */
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/* Register offsets for NetBSD. */
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extern const struct sparc_gregmap sparc32nbsd_gregmap;
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/* Return the address of a system call's alternative return
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address. */
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extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame,
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unsigned long insn);
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extern void sparc32nbsd_init_abi (struct gdbarch_info info,
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struct gdbarch *gdbarch);
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extern struct trad_frame_saved_reg *
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sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);
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#endif /* sparc-tdep.h */
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