X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Firix4-nat.c;h=7646843df4e03061f4870080e6d737fa92f8ef23;hb=feb129926a8d12656f1ca4b7a8bb10268d3af4fb;hp=c524c99349a8a07f0680de4cbd303fe7e1ebf1a8;hpb=3496b7456212818953a6b39a0ea0b278ee5de913;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/irix4-nat.c b/gdb/irix4-nat.c index c524c99349..7646843df4 100644 --- a/gdb/irix4-nat.c +++ b/gdb/irix4-nat.c @@ -1,27 +1,30 @@ /* Native support for the SGI Iris running IRIX version 4, for GDB. - Copyright 1988, 1989, 1990, 1991, 1992 Free Software Foundation, Inc. + Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1995 + Free Software Foundation, Inc. Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin. Implemented for Irix 4.x by Garrett A. Wollman. -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., 675 Mass Ave, Cambridge, MA 02139, 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 "inferior.h" +#include "gdbcore.h" #include #include @@ -33,26 +36,34 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ typedef unsigned int greg_t; /* why isn't this defined? */ +static void +fetch_core_registers PARAMS ((char *, unsigned int, int, CORE_ADDR)); + /* * See the comment in m68k-tdep.c regarding the utility of these functions. */ -void +void supply_gregset (gregsetp) gregset_t *gregsetp; { register int regi; - register greg_t *regp = (greg_t *)(gregsetp->gp_regs); + register greg_t *regp = (greg_t *) (gregsetp->gp_regs); + static char zerobuf[MAX_REGISTER_RAW_SIZE] = + {0}; /* FIXME: somewhere, there should be a #define for the meaning of this magic number 32; we should use that. */ - for(regi = 0; regi < 32; regi++) - supply_register (regi, (char *)(regp + regi)); + for (regi = 0; regi < 32; regi++) + supply_register (regi, (char *) (regp + regi)); - supply_register (PC_REGNUM, (char *)&(gregsetp->gp_pc)); - supply_register (HI_REGNUM, (char *)&(gregsetp->gp_mdhi)); - supply_register (LO_REGNUM, (char *)&(gregsetp->gp_mdlo)); - supply_register (PS_REGNUM, (char *)&(gregsetp->gp_cause)); + supply_register (PC_REGNUM, (char *) &(gregsetp->gp_pc)); + supply_register (HI_REGNUM, (char *) &(gregsetp->gp_mdhi)); + supply_register (LO_REGNUM, (char *) &(gregsetp->gp_mdlo)); + supply_register (CAUSE_REGNUM, (char *) &(gregsetp->gp_cause)); + + /* Fill inaccessible registers with zero. */ + supply_register (BADVADDR_REGNUM, zerobuf); } void @@ -61,24 +72,24 @@ fill_gregset (gregsetp, regno) int regno; { int regi; - register greg_t *regp = (greg_t *)(gregsetp->gp_regs); + register greg_t *regp = (greg_t *) (gregsetp->gp_regs); - /* same FIXME as above wrt 32*/ + /* same FIXME as above wrt 32 */ for (regi = 0; regi < 32; regi++) if ((regno == -1) || (regno == regi)) - *(regp + regi) = *(greg_t *) ®isters[REGISTER_BYTE (regi)]; + *(regp + regi) = *(greg_t *) & registers[REGISTER_BYTE (regi)]; if ((regno == -1) || (regno == PC_REGNUM)) - gregsetp->gp_pc = *(greg_t *) ®isters[REGISTER_BYTE (PC_REGNUM)]; + gregsetp->gp_pc = *(greg_t *) & registers[REGISTER_BYTE (PC_REGNUM)]; - if ((regno == -1) || (regno == PS_REGNUM)) - gregsetp->gp_cause = *(greg_t *) ®isters[REGISTER_BYTE (PS_REGNUM)]; + if ((regno == -1) || (regno == CAUSE_REGNUM)) + gregsetp->gp_cause = *(greg_t *) & registers[REGISTER_BYTE (CAUSE_REGNUM)]; if ((regno == -1) || (regno == HI_REGNUM)) - gregsetp->gp_mdhi = *(greg_t *) ®isters[REGISTER_BYTE (HI_REGNUM)]; + gregsetp->gp_mdhi = *(greg_t *) & registers[REGISTER_BYTE (HI_REGNUM)]; if ((regno == -1) || (regno == LO_REGNUM)) - gregsetp->gp_mdlo = *(greg_t *) ®isters[REGISTER_BYTE (LO_REGNUM)]; + gregsetp->gp_mdlo = *(greg_t *) & registers[REGISTER_BYTE (LO_REGNUM)]; } /* @@ -94,14 +105,17 @@ supply_fpregset (fpregsetp) fpregset_t *fpregsetp; { register int regi; + static char zerobuf[MAX_REGISTER_RAW_SIZE] = + {0}; for (regi = 0; regi < 32; regi++) supply_register (FP0_REGNUM + regi, - (char *)&fpregsetp->fp_r.fp_regs[regi]); + (char *) &fpregsetp->fp_r.fp_regs[regi]); - supply_register (FCRCS_REGNUM, (char *)&fpregsetp->fp_csr); + supply_register (FCRCS_REGNUM, (char *) &fpregsetp->fp_csr); /* FIXME: how can we supply FCRIR_REGNUM? SGI doesn't tell us. */ + supply_register (FCRIR_REGNUM, zerobuf); } void @@ -117,13 +131,13 @@ fill_fpregset (fpregsetp, regno) if ((regno == -1) || (regno == regi)) { from = (char *) ®isters[REGISTER_BYTE (regi)]; - to = (char *) &(fpregsetp->fp_r.fp_regs[regi]); - bcopy(from, to, REGISTER_RAW_SIZE (regi)); + to = (char *) &(fpregsetp->fp_r.fp_regs[regi - FP0_REGNUM]); + memcpy (to, from, REGISTER_RAW_SIZE (regi)); } } if ((regno == -1) || (regno == FCRCS_REGNUM)) - fpregsetp->fp_csr = *(unsigned *) ®isters[REGISTER_BYTE(FCRCS_REGNUM)]; + fpregsetp->fp_csr = *(unsigned *) ®isters[REGISTER_BYTE (FCRCS_REGNUM)]; } @@ -133,18 +147,52 @@ fill_fpregset (fpregsetp, regno) This routine returns true on success. */ int -get_longjmp_target(pc) +get_longjmp_target (pc) CORE_ADDR *pc; { + char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT]; CORE_ADDR jb_addr; - jb_addr = read_register(A0_REGNUM); + jb_addr = read_register (A0_REGNUM); - if (target_read_memory(jb_addr + JB_PC * JB_ELEMENT_SIZE, pc, - sizeof(CORE_ADDR))) + if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf, + TARGET_PTR_BIT / TARGET_CHAR_BIT)) return 0; - SWAP_TARGET_AND_HOST(pc, sizeof(CORE_ADDR)); + *pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT); return 1; } + +static void +fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) + char *core_reg_sect; + unsigned core_reg_size; + int which; /* Unused */ + CORE_ADDR reg_addr; /* Unused */ +{ + if (core_reg_size != REGISTER_BYTES) + { + warning ("wrong size gregset struct in core file"); + return; + } + + memcpy ((char *) registers, core_reg_sect, core_reg_size); +} + + +/* Register that we are able to handle irix4 core file formats. + FIXME: is this really bfd_target_unknown_flavour? */ + +static struct core_fns irix4_core_fns = +{ + bfd_target_unknown_flavour, + fetch_core_registers, + NULL +}; + +void +_initialize_core_irix4 () +{ + add_core_fns (&irix4_core_fns); +}