| /* GNU/Linux/IA64 specific low level interface, for the remote server for GDB. |
| Copyright (C) 1995-2024 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 "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 (); |
| } |