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- /* GNU/Linux/IA64 specific low level interface, for the remote server for GDB.
- Copyright (C) 1995-2022 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/>. */
- #include "server.h"
- #include "linux-low.h"
- #ifdef HAVE_SYS_REG_H
- #include <sys/reg.h>
- #endif
- /* Linux target op definitions for the IA64 architecture. */
- class ia64_target : public linux_process_target
- {
- public:
- const regs_info *get_regs_info () override;
- const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
- protected:
- void low_arch_setup () override;
- bool low_cannot_fetch_register (int regno) override;
- bool low_cannot_store_register (int regno) override;
- bool low_fetch_register (regcache *regcache, int regno) override;
- bool low_breakpoint_at (CORE_ADDR pc) override;
- };
- /* The singleton target ops object. */
- static ia64_target the_ia64_target;
- const gdb_byte *
- ia64_target::sw_breakpoint_from_kind (int kind, int *size)
- {
- gdb_assert_not_reached ("target op sw_breakpoint_from_kind is not "
- "implemented by this target");
- }
- bool
- ia64_target::low_breakpoint_at (CORE_ADDR pc)
- {
- gdb_assert_not_reached ("linux target op low_breakpoint_at is not "
- "implemented by this target");
- }
- /* Defined in auto-generated file reg-ia64.c. */
- void init_registers_ia64 (void);
- extern const struct target_desc *tdesc_ia64;
- #define ia64_num_regs 462
- #include <asm/ptrace_offsets.h>
- static int ia64_regmap[] =
- {
- /* general registers */
- -1, /* gr0 not available; i.e, it's always zero */
- PT_R1,
- PT_R2,
- PT_R3,
- PT_R4,
- PT_R5,
- PT_R6,
- PT_R7,
- PT_R8,
- PT_R9,
- PT_R10,
- PT_R11,
- PT_R12,
- PT_R13,
- PT_R14,
- PT_R15,
- PT_R16,
- PT_R17,
- PT_R18,
- PT_R19,
- PT_R20,
- PT_R21,
- PT_R22,
- PT_R23,
- PT_R24,
- PT_R25,
- PT_R26,
- PT_R27,
- PT_R28,
- PT_R29,
- PT_R30,
- PT_R31,
- /* gr32 through gr127 not directly available via the ptrace interface */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- /* Floating point registers */
- -1, -1, /* f0 and f1 not available (f0 is +0.0 and f1 is +1.0) */
- PT_F2,
- PT_F3,
- PT_F4,
- PT_F5,
- PT_F6,
- PT_F7,
- PT_F8,
- PT_F9,
- PT_F10,
- PT_F11,
- PT_F12,
- PT_F13,
- PT_F14,
- PT_F15,
- PT_F16,
- PT_F17,
- PT_F18,
- PT_F19,
- PT_F20,
- PT_F21,
- PT_F22,
- PT_F23,
- PT_F24,
- PT_F25,
- PT_F26,
- PT_F27,
- PT_F28,
- PT_F29,
- PT_F30,
- PT_F31,
- PT_F32,
- PT_F33,
- PT_F34,
- PT_F35,
- PT_F36,
- PT_F37,
- PT_F38,
- PT_F39,
- PT_F40,
- PT_F41,
- PT_F42,
- PT_F43,
- PT_F44,
- PT_F45,
- PT_F46,
- PT_F47,
- PT_F48,
- PT_F49,
- PT_F50,
- PT_F51,
- PT_F52,
- PT_F53,
- PT_F54,
- PT_F55,
- PT_F56,
- PT_F57,
- PT_F58,
- PT_F59,
- PT_F60,
- PT_F61,
- PT_F62,
- PT_F63,
- PT_F64,
- PT_F65,
- PT_F66,
- PT_F67,
- PT_F68,
- PT_F69,
- PT_F70,
- PT_F71,
- PT_F72,
- PT_F73,
- PT_F74,
- PT_F75,
- PT_F76,
- PT_F77,
- PT_F78,
- PT_F79,
- PT_F80,
- PT_F81,
- PT_F82,
- PT_F83,
- PT_F84,
- PT_F85,
- PT_F86,
- PT_F87,
- PT_F88,
- PT_F89,
- PT_F90,
- PT_F91,
- PT_F92,
- PT_F93,
- PT_F94,
- PT_F95,
- PT_F96,
- PT_F97,
- PT_F98,
- PT_F99,
- PT_F100,
- PT_F101,
- PT_F102,
- PT_F103,
- PT_F104,
- PT_F105,
- PT_F106,
- PT_F107,
- PT_F108,
- PT_F109,
- PT_F110,
- PT_F111,
- PT_F112,
- PT_F113,
- PT_F114,
- PT_F115,
- PT_F116,
- PT_F117,
- PT_F118,
- PT_F119,
- PT_F120,
- PT_F121,
- PT_F122,
- PT_F123,
- PT_F124,
- PT_F125,
- PT_F126,
- PT_F127,
- /* predicate registers - we don't fetch these individually */
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- /* branch registers */
- PT_B0,
- PT_B1,
- PT_B2,
- PT_B3,
- PT_B4,
- PT_B5,
- PT_B6,
- PT_B7,
- /* virtual frame pointer and virtual return address pointer */
- -1, -1,
- /* other registers */
- PT_PR,
- PT_CR_IIP, /* ip */
- PT_CR_IPSR, /* psr */
- PT_CFM, /* cfm */
- /* kernel registers not visible via ptrace interface (?) */
- -1, -1, -1, -1, -1, -1, -1, -1,
- /* hole */
- -1, -1, -1, -1, -1, -1, -1, -1,
- PT_AR_RSC,
- PT_AR_BSP,
- PT_AR_BSPSTORE,
- PT_AR_RNAT,
- -1,
- -1, /* Not available: FCR, IA32 floating control register */
- -1, -1,
- -1, /* Not available: EFLAG */
- -1, /* Not available: CSD */
- -1, /* Not available: SSD */
- -1, /* Not available: CFLG */
- -1, /* Not available: FSR */
- -1, /* Not available: FIR */
- -1, /* Not available: FDR */
- -1,
- PT_AR_CCV,
- -1, -1, -1,
- PT_AR_UNAT,
- -1, -1, -1,
- PT_AR_FPSR,
- -1, -1, -1,
- -1, /* Not available: ITC */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1,
- PT_AR_PFS,
- PT_AR_LC,
- PT_AR_EC,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1,
- };
- bool
- ia64_target::low_cannot_store_register (int regno)
- {
- return false;
- }
- bool
- ia64_target::low_cannot_fetch_register (int regno)
- {
- return false;
- }
- /* GDB register numbers. */
- #define IA64_GR0_REGNUM 0
- #define IA64_FR0_REGNUM 128
- #define IA64_FR1_REGNUM 129
- bool
- ia64_target::low_fetch_register (regcache *regcache, int regnum)
- {
- /* r0 cannot be fetched but is always zero. */
- if (regnum == IA64_GR0_REGNUM)
- {
- const gdb_byte zero[8] = { 0 };
- gdb_assert (sizeof (zero) == register_size (regcache->tdesc, regnum));
- supply_register (regcache, regnum, zero);
- return true;
- }
- /* fr0 cannot be fetched but is always zero. */
- if (regnum == IA64_FR0_REGNUM)
- {
- const gdb_byte f_zero[16] = { 0 };
- gdb_assert (sizeof (f_zero) == register_size (regcache->tdesc, regnum));
- supply_register (regcache, regnum, f_zero);
- return true;
- }
- /* fr1 cannot be fetched but is always one (1.0). */
- if (regnum == IA64_FR1_REGNUM)
- {
- const gdb_byte f_one[16] =
- { 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0xff, 0, 0, 0, 0, 0, 0 };
- gdb_assert (sizeof (f_one) == register_size (regcache->tdesc, regnum));
- supply_register (regcache, regnum, f_one);
- return true;
- }
- return false;
- }
- static struct usrregs_info ia64_usrregs_info =
- {
- ia64_num_regs,
- ia64_regmap,
- };
- static struct regs_info myregs_info =
- {
- NULL, /* regset_bitmap */
- &ia64_usrregs_info
- };
- const regs_info *
- ia64_target::get_regs_info ()
- {
- return &myregs_info;
- }
- void
- ia64_target::low_arch_setup ()
- {
- current_process ()->tdesc = tdesc_ia64;
- }
- /* The linux target ops object. */
- linux_process_target *the_linux_target = &the_ia64_target;
- void
- initialize_low_arch (void)
- {
- init_registers_ia64 ();
- }
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