X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Falpha-nat.c;h=62486cf05cecd6379a143ea282b1e96f136ca00f;hb=00e32a35b6e3c980338d7fe47dab8658f211efb9;hp=6e05781f8d21226339ac59a36a9eb7dd8c2b13a4;hpb=7531f36e8e7f241cdf8d03ceb99af99f1a784ec0;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/alpha-nat.c b/gdb/alpha-nat.c index 6e05781f8d..62486cf05c 100644 --- a/gdb/alpha-nat.c +++ b/gdb/alpha-nat.c @@ -1,64 +1,46 @@ /* Low level Alpha interface, for GDB when running native. - Copyright 1993, 1995, 1996 Free Software Foundation, Inc. + Copyright 1993, 1995, 1996, 1998, 1999, 2000, 2001, 2003 + Free Software Foundation, Inc. -This file is part of GDB. + 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 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. + 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. */ + 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 "gdb_string.h" #include "inferior.h" #include "gdbcore.h" #include "target.h" -#include -#include -#include - -/* 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 , define the correct value here. */ - -#undef JB_PC -#define JB_PC 2 +#include "regcache.h" -/* 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. */ +#include "alpha-tdep.h" -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); +#include +#ifdef __linux__ +#include +#include +#else +#include +#endif +#include - if (target_read_memory(jb_addr + JB_PC * JB_ELEMENT_SIZE, raw_buffer, - sizeof(CORE_ADDR))) - return 0; +/* Prototypes for local functions. */ - *pc = extract_address (raw_buffer, sizeof(CORE_ADDR)); - return 1; -} +static void fetch_osf_core_registers (char *, unsigned, int, CORE_ADDR); +static void fetch_elf_core_registers (char *, unsigned, int, CORE_ADDR); /* Extract the register values out of the core file and store them where `read_register' will find them. @@ -66,51 +48,69 @@ get_longjmp_target (pc) 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). + 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. + 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. */ -void -fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) - char *core_reg_sect; - unsigned core_reg_size; - int which; - unsigned reg_addr; +static void +fetch_osf_core_registers (char *core_reg_sect, unsigned core_reg_size, + int which, CORE_ADDR reg_addr) { - register int regno; - register int addr; + int regno; + 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] = + /* 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. OSF5 uses different names for the register + enum list, need to handle two cases. The actual values are the + same. */ + static int const core_reg_mapping[ALPHA_NUM_REGS] = { +#ifdef NCF_REGS +#define EFL NCF_REGS + CF_V0, CF_T0, CF_T1, CF_T2, CF_T3, CF_T4, CF_T5, CF_T6, + CF_T7, CF_S0, CF_S1, CF_S2, CF_S3, CF_S4, CF_S5, CF_S6, + CF_A0, CF_A1, CF_A2, CF_A3, CF_A4, CF_A5, CF_T8, CF_T9, + CF_T10, CF_T11, CF_RA, CF_T12, CF_AT, CF_GP, CF_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, + CF_PC, -1 +#else #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 + 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 +#endif }; - static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0}; - for (regno = 0; regno < NUM_REGS; regno++) + for (regno = 0; regno < ALPHA_NUM_REGS; regno++) { if (CANNOT_FETCH_REGISTER (regno)) { - supply_register (regno, zerobuf); + supply_register (regno, NULL); continue; } addr = 8 * core_reg_mapping[regno]; if (addr < 0 || addr >= core_reg_size) { + /* ??? UNIQUE is a new addition. Don't generate an error. */ + if (regno == ALPHA_UNIQUE_REGNUM) + { + supply_register (regno, NULL); + continue; + } if (bad_reg < 0) bad_reg = regno; } @@ -121,74 +121,100 @@ fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) } if (bad_reg >= 0) { - error ("Register %s not found in core file.", reg_names[bad_reg]); + error ("Register %s not found in core file.", REGISTER_NAME (bad_reg)); } } -/* Map gdb internal register number to a ptrace ``address''. - These ``addresses'' are defined in */ +static void +fetch_elf_core_registers (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; + } + + switch (which) + { + case 0: /* integer registers */ + /* PC is in slot 32; UNIQUE is in slot 33, if present. */ + alpha_supply_int_regs (-1, core_reg_sect, core_reg_sect + 31*8, + (core_reg_size >= 33 * 8 + ? core_reg_sect + 32*8 : NULL)); + break; + + case 2: /* floating-point registers */ + /* FPCR is in slot 32. */ + alpha_supply_fp_regs (-1, core_reg_sect, core_reg_sect + 31*8); + break; + + default: + break; + } +} -#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. */ +/* Map gdb internal register number to a ptrace ``address''. + These ``addresses'' are defined in , with + the exception of ALPHA_UNIQUE_PTRACE_ADDR. */ -unsigned int -register_addr (regno, blockend) - int regno; - int blockend; +#ifndef ALPHA_UNIQUE_PTRACE_ADDR +#define ALPHA_UNIQUE_PTRACE_ADDR 0 +#endif + +CORE_ADDR +register_addr (int regno, CORE_ADDR blockend) { - return REGISTER_PTRACE_ADDR (regno); + if (regno == PC_REGNUM) + return PC; + if (regno == ALPHA_UNIQUE_REGNUM) + return ALPHA_UNIQUE_PTRACE_ADDR; + if (regno < FP0_REGNUM) + return GPR_BASE + regno; + else + return FPR_BASE + regno - FP0_REGNUM; } int -kernel_u_size () +kernel_u_size (void) { return (sizeof (struct user)); } -#ifdef USE_PROC_FS +#if defined(USE_PROC_FS) || defined(HAVE_GREGSET_T) #include +/* Prototypes for supply_gregset etc. */ +#include "gregset.h" + +/* Locate the UNIQUE value within the gregset_t. */ +#ifndef ALPHA_REGSET_UNIQUE +#define ALPHA_REGSET_UNIQUE(ptr) NULL +#endif + /* * See the comment in m68k-tdep.c regarding the utility of these functions. */ -void -supply_gregset (gregsetp) - gregset_t *gregsetp; +void +supply_gregset (gdb_gregset_t *gregsetp) { - register int regi; - register long *regp = gregsetp->regs; - static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0}; + long *regp = ALPHA_REGSET_BASE (gregsetp); + void *unique = ALPHA_REGSET_UNIQUE (gregsetp); - 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); + /* PC is in slot 32. */ + alpha_supply_int_regs (-1, regp, regp + 31, unique); } void -fill_gregset (gregsetp, regno) - gregset_t *gregsetp; - int regno; +fill_gregset (gdb_gregset_t *gregsetp, int regno) { - int regi; - register long *regp = gregsetp->regs; - - for (regi = 0; regi < 31; regi++) - if ((regno == -1) || (regno == regi)) - *(regp + regi) = *(long *) ®isters[REGISTER_BYTE (regi)]; + long *regp = ALPHA_REGSET_BASE (gregsetp); + void *unique = ALPHA_REGSET_UNIQUE (gregsetp); - if ((regno == -1) || (regno == PC_REGNUM)) - *(regp + 31) = *(long *) ®isters[REGISTER_BYTE (PC_REGNUM)]; + /* PC is in slot 32. */ + alpha_fill_int_regs (regno, regp, regp + 31, unique); } /* @@ -197,31 +223,50 @@ fill_gregset (gregsetp, regno) */ void -supply_fpregset (fpregsetp) - fpregset_t *fpregsetp; +supply_fpregset (gdb_fpregset_t *fpregsetp) { - register int regi; - register long *regp = fpregsetp->regs; + long *regp = ALPHA_REGSET_BASE (fpregsetp); - for (regi = 0; regi < 32; regi++) - supply_register (regi + FP0_REGNUM, (char *)(regp + regi)); + /* FPCR is in slot 32. */ + alpha_supply_fp_regs (-1, regp, regp + 31); } void -fill_fpregset (fpregsetp, regno) - fpregset_t *fpregsetp; - int regno; +fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) { - int regi; - register long *regp = fpregsetp->regs; + 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)]; - } - } + /* FPCR is in slot 32. */ + alpha_fill_fp_regs (regno, regp, regp + 31); } #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, /* core_flavour */ + default_check_format, /* check_format */ + default_core_sniffer, /* core_sniffer */ + fetch_osf_core_registers, /* core_read_registers */ + NULL /* next */ +}; + +static struct core_fns alpha_elf_core_fns = +{ + bfd_target_elf_flavour, /* core_flavour */ + default_check_format, /* check_format */ + default_core_sniffer, /* core_sniffer */ + fetch_elf_core_registers, /* core_read_registers */ + NULL /* next */ +}; + +void +_initialize_core_alpha (void) +{ + deprecated_add_core_fns (&alpha_osf_core_fns); + deprecated_add_core_fns (&alpha_elf_core_fns); +}