1 /* Native support for the SGI Iris running IRIX version 4, for GDB.
2 Copyright 1988, 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
5 Implemented for Irix 4.x by Garrett A. Wollman.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
27 #include <sys/procfs.h>
28 #include <setjmp.h> /* For JB_XXX. */
30 /* Size of elements in jmpbuf */
32 #define JB_ELEMENT_SIZE 4
34 typedef unsigned int greg_t; /* why isn't this defined? */
37 * See the comment in m68k-tdep.c regarding the utility of these functions.
41 supply_gregset (gregsetp)
45 register greg_t *regp = (greg_t *)(gregsetp->gp_regs);
47 /* FIXME: somewhere, there should be a #define for the meaning
48 of this magic number 32; we should use that. */
49 for(regi = 0; regi < 32; regi++)
50 supply_register (regi, (char *)(regp + regi));
52 supply_register (PC_REGNUM, (char *)&(gregsetp->gp_pc));
53 supply_register (HI_REGNUM, (char *)&(gregsetp->gp_mdhi));
54 supply_register (LO_REGNUM, (char *)&(gregsetp->gp_mdlo));
55 supply_register (PS_REGNUM, (char *)&(gregsetp->gp_cause));
59 fill_gregset (gregsetp, regno)
64 register greg_t *regp = (greg_t *)(gregsetp->gp_regs);
66 /* same FIXME as above wrt 32*/
67 for (regi = 0; regi < 32; regi++)
68 if ((regno == -1) || (regno == regi))
69 *(regp + regi) = *(greg_t *) ®isters[REGISTER_BYTE (regi)];
71 if ((regno == -1) || (regno == PC_REGNUM))
72 gregsetp->gp_pc = *(greg_t *) ®isters[REGISTER_BYTE (PC_REGNUM)];
74 if ((regno == -1) || (regno == PS_REGNUM))
75 gregsetp->gp_cause = *(greg_t *) ®isters[REGISTER_BYTE (PS_REGNUM)];
77 if ((regno == -1) || (regno == HI_REGNUM))
78 gregsetp->gp_mdhi = *(greg_t *) ®isters[REGISTER_BYTE (HI_REGNUM)];
80 if ((regno == -1) || (regno == LO_REGNUM))
81 gregsetp->gp_mdlo = *(greg_t *) ®isters[REGISTER_BYTE (LO_REGNUM)];
85 * Now we do the same thing for floating-point registers.
86 * We don't bother to condition on FP0_REGNUM since any
87 * reasonable MIPS configuration has an R3010 in it.
89 * Again, see the comments in m68k-tdep.c.
93 supply_fpregset (fpregsetp)
94 fpregset_t *fpregsetp;
98 for (regi = 0; regi < 32; regi++)
99 supply_register (FP0_REGNUM + regi,
100 (char *)&fpregsetp->fp_r.fp_regs[regi]);
102 supply_register (FCRCS_REGNUM, (char *)&fpregsetp->fp_csr);
104 /* FIXME: how can we supply FCRIR_REGNUM? SGI doesn't tell us. */
108 fill_fpregset (fpregsetp, regno)
109 fpregset_t *fpregsetp;
115 for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++)
117 if ((regno == -1) || (regno == regi))
119 from = (char *) ®isters[REGISTER_BYTE (regi)];
120 to = (char *) &(fpregsetp->fp_r.fp_regs[regi - FP0_REGNUM]);
121 bcopy(from, to, REGISTER_RAW_SIZE (regi));
125 if ((regno == -1) || (regno == FCRCS_REGNUM))
126 fpregsetp->fp_csr = *(unsigned *) ®isters[REGISTER_BYTE(FCRCS_REGNUM)];
130 /* Figure out where the longjmp will land.
131 We expect the first arg to be a pointer to the jmp_buf structure from which
132 we extract the pc (JB_PC) that we will land at. The pc is copied into PC.
133 This routine returns true on success. */
136 get_longjmp_target(pc)
141 jb_addr = read_register(A0_REGNUM);
143 if (target_read_memory(jb_addr + JB_PC * JB_ELEMENT_SIZE, pc,
147 SWAP_TARGET_AND_HOST(pc, sizeof(CORE_ADDR));
153 fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
155 unsigned core_reg_size;
156 int which; /* Unused */
157 unsigned int reg_addr; /* Unused */
159 if (core_reg_size != REGISTER_BYTES)
161 warning ("wrong size gregset struct in core file");
165 memcpy ((char *)registers, core_reg_sect, core_reg_size);