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Diffstat (limited to 'gdb/irix4-nat.c')
| -rw-r--r-- | gdb/irix4-nat.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/gdb/irix4-nat.c b/gdb/irix4-nat.c new file mode 100644 index 0000000..5127bc2 --- /dev/null +++ b/gdb/irix4-nat.c @@ -0,0 +1,126 @@ +/* Target-dependent code for the MIPS architecture, for GDB, the GNU Debugger. + Copyright 1988, 1989, 1990, 1991, 1992 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. + +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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "defs.h" + +/* + * Implemented for Irix 4.x by Garrett A. Wollman + */ + +#include <sys/time.h> +#include <sys/procfs.h> + +typedef unsigned int greg_t; /* why isn't this defined? */ + +/* + * See the comment in m68k-tdep.c regarding the utility of these functions. + */ + +void +supply_gregset (gregsetp) + gregset_t *gregsetp; +{ + register int regi; + register greg_t *regp = (greg_t *)(gregsetp->gp_regs); + + /* 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)); + + 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)); +} + +void +fill_gregset (gregsetp, regno) + gregset_t *gregsetp; + int regno; +{ + int regi; + register greg_t *regp = (greg_t *)(gregsetp->gp_regs); + extern char registers[]; + + /* 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)]; + + if ((regno == -1) || (regno == PC_REGNUM)) + gregsetp->gp_pc = *(greg_t *) ®isters[REGISTER_BYTE (PC_REGNUM)]; + + if ((regno == -1) || (regno == PS_REGNUM)) + gregsetp->gp_cause = *(greg_t *) ®isters[REGISTER_BYTE (PS_REGNUM)]; + + if ((regno == -1) || (regno == HI_REGNUM)) + gregsetp->gp_mdhi = *(greg_t *) ®isters[REGISTER_BYTE (HI_REGNUM)]; + + if ((regno == -1) || (regno == LO_REGNUM)) + gregsetp->gp_mdlo = *(greg_t *) ®isters[REGISTER_BYTE (LO_REGNUM)]; +} + +/* + * Now we do the same thing for floating-point registers. + * We don't bother to condition on FP0_REGNUM since any + * reasonable MIPS configuration has an R3010 in it. + * + * Again, see the comments in m68k-tdep.c. + */ + +void +supply_fpregset (fpregsetp) + fpregset_t *fpregsetp; +{ + register int regi; + + for (regi = 0; regi < 32; regi++) + supply_register (FP0_REGNUM + regi, + (char *)&fpregsetp->fp_r.fp_regs[regi]); + + supply_register (FCRCS_REGNUM, (char *)&fpregsetp->fp_csr); + + /* FIXME: how can we supply FCRIR_REGNUM? SGI doesn't tell us. */ +} + +void +fill_fpregset (fpregsetp, regno) + fpregset_t *fpregsetp; + int regno; +{ + int regi; + char *from, *to; + extern char registers[]; + + for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++) + { + 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)); + } + } + + if ((regno == -1) || (regno == FCRCS_REGNUM)) + fpregsetp->fp_csr = *(unsigned *) ®isters[REGISTER_BYTE(FCRCS_REGNUM)]; +} |