c893be758b
(sparc_address_from_register): New prototype. (sparcnbsd_step_trap): New prototype. * sparc-tdep.c (sparc_address_from_register): Make globally visible. (sparc_analyze_control_transfer): Change prototype to accept `struct gdbarch *' as first argument. Allow for optional hnadling for trap instructions. (sparc_step_trap): New function. (sparc_software_single_step): Adjust call to sparc_analyze_control_trabsfer. (sparc32_gdbarch_init): Initialize TDEP->step_trap. * sparcnbsd-tdep.c (sparcnbsd_step_trap): New function. (sparc32nbsd_init_abi): Set TDEP->step_trap. * sparc64obsd-tdep.c (sparc64obsd_init_abi): Set TDEP->step_trap. * sparc64nbsd-tdep.c (sparc64nbsd_init_abi): Set TDEP->step_trap.
217 lines
5.9 KiB
C
217 lines
5.9 KiB
C
/* Target-dependent code for SPARC.
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Copyright (C) 2003, 2004, 2006 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 2 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, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#ifndef SPARC_TDEP_H
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#define SPARC_TDEP_H 1
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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_gregset
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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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/* SPARC architecture-specific information. */
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struct 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;
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int npc_regnum;
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/* Register sets. */
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struct regset *gregset;
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size_t sizeof_gregset;
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struct regset *fpregset;
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size_t sizeof_fpregset;
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/* Offset of saved PC in jmp_buf. */
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int jb_pc_offset;
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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;
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/* Alternative location for trap return. Used for single-stepping. */
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CORE_ADDR (*step_trap) (unsigned long insn);
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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, /* %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_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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/* Pseudo registers. */
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SPARC32_D0_REGNUM, /* %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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/* 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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/* Return the contents if register REGNUM as an address. */
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extern CORE_ADDR sparc_address_from_register (int regnum);
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/* Fetch StackGhost Per-Process XOR cookie. */
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extern ULONGEST sparc_fetch_wcookie (void);
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extern CORE_ADDR sparc_analyze_prologue (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 *next_frame, void **this_cache);
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extern struct sparc_frame_cache *
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sparc32_frame_cache (struct frame_info *next_frame, void **this_cache);
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extern void sparc_software_single_step (enum target_signal sig,
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int insert_breakpoints_p);
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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_gregset sparc32_sunos4_gregset;
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extern void sparc32_supply_gregset (const struct sparc_gregset *gregset,
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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_gregset *gregset,
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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 (struct regcache *regcache,
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int regnum, const void *fpregs);
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extern void sparc32_collect_fpregset (const struct regcache *regcache,
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int regnum, void *fpregs);
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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_gregset sparc32_sol2_gregset;
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extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name);
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extern void sparc32_sol2_init_abi (struct gdbarch_info info,
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struct gdbarch *gdbarch);
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/* Functions and variables exported from sparcnbsd-tdep.c. */
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/* Register offsets for NetBSD. */
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extern const struct sparc_gregset sparc32nbsd_gregset;
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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 (unsigned long insn);
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extern void sparc32nbsd_elf_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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