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author | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
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committer | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
commit | 071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch) | |
tree | 5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/alpha-nat.c | |
parent | 1730ec6b1848f0f32154277f788fb29f88d8475b (diff) | |
download | gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.zip gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.gz gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.bz2 |
Initial creation of sourceware repository
Diffstat (limited to 'gdb/alpha-nat.c')
-rw-r--r-- | gdb/alpha-nat.c | 297 |
1 files changed, 0 insertions, 297 deletions
diff --git a/gdb/alpha-nat.c b/gdb/alpha-nat.c deleted file mode 100644 index 59bd0d8..0000000 --- a/gdb/alpha-nat.c +++ /dev/null @@ -1,297 +0,0 @@ -/* Low level Alpha interface, for GDB when running native. - Copyright 1993, 1995, 1996, 1998 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "inferior.h" -#include "gdbcore.h" -#include "target.h" -#include <sys/ptrace.h> -#ifdef __linux__ -# include <asm/reg.h> -# include <alpha/ptrace.h> -#else -# include <machine/reg.h> -#endif -#include <sys/user.h> - -/* Prototypes for local functions. */ - -static void fetch_osf_core_registers PARAMS ((char *, - unsigned, int, CORE_ADDR)); -static void fetch_elf_core_registers PARAMS ((char *, - unsigned, int, CORE_ADDR)); - -/* Size of elements in jmpbuf */ - -#define JB_ELEMENT_SIZE 8 - -/* The definition for JB_PC in machine/reg.h is wrong. - And we can't get at the correct definition in setjmp.h as it is - not always available (eg. if _POSIX_SOURCE is defined which is the - default). As the defintion is unlikely to change (see comment - in <setjmp.h>, define the correct value here. */ - -#undef JB_PC -#define JB_PC 2 - -/* Figure out where the longjmp will land. - We expect the first arg to be a pointer to the jmp_buf structure from which - we extract the pc (JB_PC) that we will land at. The pc is copied into PC. - This routine returns true on success. */ - -int -get_longjmp_target (pc) - CORE_ADDR *pc; -{ - CORE_ADDR jb_addr; - char raw_buffer[MAX_REGISTER_RAW_SIZE]; - - jb_addr = read_register(A0_REGNUM); - - if (target_read_memory(jb_addr + JB_PC * JB_ELEMENT_SIZE, raw_buffer, - sizeof(CORE_ADDR))) - return 0; - - *pc = extract_address (raw_buffer, sizeof(CORE_ADDR)); - return 1; -} - -/* Extract the register values out of the core file and store - them where `read_register' will find them. - - CORE_REG_SECT points to the register values themselves, read into memory. - CORE_REG_SIZE is the size of that area. - WHICH says which set of registers we are handling (0 = int, 2 = float - on machines where they are discontiguous). - REG_ADDR is the offset from u.u_ar0 to the register values relative to - core_reg_sect. This is used with old-fashioned core files to - locate the registers in a large upage-plus-stack ".reg" section. - Original upage address X is at location core_reg_sect+x+reg_addr. - */ - -static void -fetch_osf_core_registers (core_reg_sect, core_reg_size, which, reg_addr) - char *core_reg_sect; - unsigned core_reg_size; - int which; - CORE_ADDR reg_addr; -{ - register int regno; - register int addr; - int bad_reg = -1; - - /* Table to map a gdb regnum to an index in the core register section. - The floating point register values are garbage in OSF/1.2 core files. */ - static int core_reg_mapping[NUM_REGS] = - { -#define EFL (EF_SIZE / 8) - EF_V0, EF_T0, EF_T1, EF_T2, EF_T3, EF_T4, EF_T5, EF_T6, - EF_T7, EF_S0, EF_S1, EF_S2, EF_S3, EF_S4, EF_S5, EF_S6, - EF_A0, EF_A1, EF_A2, EF_A3, EF_A4, EF_A5, EF_T8, EF_T9, - EF_T10, EF_T11, EF_RA, EF_T12, EF_AT, EF_GP, EF_SP, -1, - EFL+0, EFL+1, EFL+2, EFL+3, EFL+4, EFL+5, EFL+6, EFL+7, - EFL+8, EFL+9, EFL+10, EFL+11, EFL+12, EFL+13, EFL+14, EFL+15, - EFL+16, EFL+17, EFL+18, EFL+19, EFL+20, EFL+21, EFL+22, EFL+23, - EFL+24, EFL+25, EFL+26, EFL+27, EFL+28, EFL+29, EFL+30, EFL+31, - EF_PC, -1 - }; - static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0}; - - for (regno = 0; regno < NUM_REGS; regno++) - { - if (CANNOT_FETCH_REGISTER (regno)) - { - supply_register (regno, zerobuf); - continue; - } - addr = 8 * core_reg_mapping[regno]; - if (addr < 0 || addr >= core_reg_size) - { - if (bad_reg < 0) - bad_reg = regno; - } - else - { - supply_register (regno, core_reg_sect + addr); - } - } - if (bad_reg >= 0) - { - error ("Register %s not found in core file.", REGISTER_NAME (bad_reg)); - } -} - -static void -fetch_elf_core_registers (core_reg_sect, core_reg_size, which, reg_addr) - char *core_reg_sect; - unsigned core_reg_size; - int which; - CORE_ADDR reg_addr; -{ - if (core_reg_size < 32*8) - { - error ("Core file register section too small (%u bytes).", core_reg_size); - return; - } - - if (which == 2) - { - /* The FPU Registers. */ - memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], core_reg_sect, 31*8); - memset (®isters[REGISTER_BYTE (FP0_REGNUM+31)], 0, 8); - memset (®ister_valid[FP0_REGNUM], 1, 32); - } - else - { - /* The General Registers. */ - memcpy (®isters[REGISTER_BYTE (V0_REGNUM)], core_reg_sect, 31*8); - memcpy (®isters[REGISTER_BYTE (PC_REGNUM)], core_reg_sect+31*8, 8); - memset (®isters[REGISTER_BYTE (ZERO_REGNUM)], 0, 8); - memset (®ister_valid[V0_REGNUM], 1, 32); - register_valid[PC_REGNUM] = 1; - } -} - - -/* Map gdb internal register number to a ptrace ``address''. - These ``addresses'' are defined in <sys/ptrace.h> */ - -#define REGISTER_PTRACE_ADDR(regno) \ - (regno < FP0_REGNUM ? GPR_BASE + (regno) \ - : regno == PC_REGNUM ? PC \ - : regno >= FP0_REGNUM ? FPR_BASE + ((regno) - FP0_REGNUM) \ - : 0) - -/* Return the ptrace ``address'' of register REGNO. */ - -CORE_ADDR -register_addr (regno, blockend) - int regno; - CORE_ADDR blockend; -{ - return REGISTER_PTRACE_ADDR (regno); -} - -int -kernel_u_size () -{ - return (sizeof (struct user)); -} - -#if defined(USE_PROC_FS) || defined(HAVE_GREGSET_T) -#include <sys/procfs.h> - -/* - * See the comment in m68k-tdep.c regarding the utility of these functions. - */ - -void -supply_gregset (gregsetp) - gregset_t *gregsetp; -{ - register int regi; - register long *regp = ALPHA_REGSET_BASE (gregsetp); - static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0}; - - for (regi = 0; regi < 31; regi++) - supply_register (regi, (char *)(regp + regi)); - - supply_register (PC_REGNUM, (char *)(regp + 31)); - - /* Fill inaccessible registers with zero. */ - supply_register (ZERO_REGNUM, zerobuf); - supply_register (FP_REGNUM, zerobuf); -} - -void -fill_gregset (gregsetp, regno) - gregset_t *gregsetp; - int regno; -{ - int regi; - register long *regp = ALPHA_REGSET_BASE (gregsetp); - - for (regi = 0; regi < 31; regi++) - if ((regno == -1) || (regno == regi)) - *(regp + regi) = *(long *) ®isters[REGISTER_BYTE (regi)]; - - if ((regno == -1) || (regno == PC_REGNUM)) - *(regp + 31) = *(long *) ®isters[REGISTER_BYTE (PC_REGNUM)]; -} - -/* - * Now we do the same thing for floating-point registers. - * Again, see the comments in m68k-tdep.c. - */ - -void -supply_fpregset (fpregsetp) - fpregset_t *fpregsetp; -{ - register int regi; - register long *regp = ALPHA_REGSET_BASE (fpregsetp); - - for (regi = 0; regi < 32; regi++) - supply_register (regi + FP0_REGNUM, (char *)(regp + regi)); -} - -void -fill_fpregset (fpregsetp, regno) - fpregset_t *fpregsetp; - int regno; -{ - int regi; - register long *regp = ALPHA_REGSET_BASE (fpregsetp); - - for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++) - { - if ((regno == -1) || (regno == regi)) - { - *(regp + regi - FP0_REGNUM) = - *(long *) ®isters[REGISTER_BYTE (regi)]; - } - } -} -#endif - - -/* Register that we are able to handle alpha core file formats. */ - -static struct core_fns alpha_osf_core_fns = -{ - /* This really is bfd_target_unknown_flavour. */ - - bfd_target_unknown_flavour, - fetch_osf_core_registers, - NULL -}; - -static struct core_fns alpha_elf_core_fns = -{ - bfd_target_elf_flavour, - fetch_elf_core_registers, - NULL -}; - -void -_initialize_core_alpha () -{ - add_core_fns (&alpha_osf_core_fns); - add_core_fns (&alpha_elf_core_fns); -} |