diff options
Diffstat (limited to 'gdb/i386v4-nat.c')
| -rw-r--r-- | gdb/i386v4-nat.c | 141 |
1 files changed, 71 insertions, 70 deletions
diff --git a/gdb/i386v4-nat.c b/gdb/i386v4-nat.c index 074c1daf4b9..10802cb730b 100644 --- a/gdb/i386v4-nat.c +++ b/gdb/i386v4-nat.c @@ -1,21 +1,22 @@ /* Native-dependent code for SVR4 Unix running on i386's, for GDB. Copyright 1988, 1989, 1991, 1992, 1996, 1998 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 "value.h" @@ -31,46 +32,46 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <sys/procfs.h> /* The /proc interface divides the target machine's register set up into - two different sets, the general register set (gregset) and the floating - point register set (fpregset). For each set, there is an ioctl to get - the current register set and another ioctl to set the current values. - - The actual structure passed through the ioctl interface is, of course, - naturally machine dependent, and is different for each set of registers. - For the i386 for example, the general register set is typically defined - by: - - typedef int gregset_t[19]; (in <sys/regset.h>) - - #define GS 0 (in <sys/reg.h>) - #define FS 1 - ... - #define UESP 17 - #define SS 18 - - and the floating point set by: - - typedef struct fpregset - { - union - { - struct fpchip_state // fp extension state // - { - int state[27]; // 287/387 saved state // - int status; // status word saved at exception // - } fpchip_state; - struct fp_emul_space // for emulators // - { - char fp_emul[246]; - char fp_epad[2]; - } fp_emul_space; - int f_fpregs[62]; // union of the above // - } fp_reg_set; - long f_wregs[33]; // saved weitek state // - } fpregset_t; - - These routines provide the packing and unpacking of gregset_t and - fpregset_t formatted data. + two different sets, the general register set (gregset) and the floating + point register set (fpregset). For each set, there is an ioctl to get + the current register set and another ioctl to set the current values. + + The actual structure passed through the ioctl interface is, of course, + naturally machine dependent, and is different for each set of registers. + For the i386 for example, the general register set is typically defined + by: + + typedef int gregset_t[19]; (in <sys/regset.h>) + + #define GS 0 (in <sys/reg.h>) + #define FS 1 + ... + #define UESP 17 + #define SS 18 + + and the floating point set by: + + typedef struct fpregset + { + union + { + struct fpchip_state // fp extension state // + { + int state[27]; // 287/387 saved state // + int status; // status word saved at exception // + } fpchip_state; + struct fp_emul_space // for emulators // + { + char fp_emul[246]; + char fp_epad[2]; + } fp_emul_space; + int f_fpregs[62]; // union of the above // + } fp_reg_set; + long f_wregs[33]; // saved weitek state // + } fpregset_t; + + These routines provide the packing and unpacking of gregset_t and + fpregset_t formatted data. */ @@ -78,7 +79,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* This is a duplicate of the table in i386-xdep.c. */ -static int regmap[] = +static int regmap[] = { EAX, ECX, EDX, EBX, UESP, EBP, ESI, EDI, @@ -98,14 +99,14 @@ void fill_fpregset PARAMS ((fpregset_t *, int)); /* FIXME: These routine absolutely depends upon (NUM_REGS - NUM_FREGS) - being less than or equal to the number of registers that can be stored - in a gregset_t. Note that with the current scheme there will typically - be more registers actually stored in a gregset_t that what we know - about. This is bogus and should be fixed. */ + being less than or equal to the number of registers that can be stored + in a gregset_t. Note that with the current scheme there will typically + be more registers actually stored in a gregset_t that what we know + about. This is bogus and should be fixed. */ /* Given a pointer to a general register set in /proc format (gregset_t *), - unpack the register contents and supply them as gdb's idea of the current - register values. */ + unpack the register contents and supply them as gdb's idea of the current + register values. */ void supply_gregset (gregsetp) @@ -115,7 +116,7 @@ supply_gregset (gregsetp) register greg_t *regp = (greg_t *) gregsetp; extern int regmap[]; - for (regi = 0 ; regi < (NUM_REGS - NUM_FREGS) ; regi++) + for (regi = 0; regi < (NUM_REGS - NUM_FREGS); regi++) { supply_register (regi, (char *) (regp + regmap[regi])); } @@ -130,7 +131,7 @@ fill_gregset (gregsetp, regno) register greg_t *regp = (greg_t *) gregsetp; extern int regmap[]; - for (regi = 0 ; regi < (NUM_REGS - NUM_FREGS) ; regi++) + for (regi = 0; regi < (NUM_REGS - NUM_FREGS); regi++) { if ((regno == -1) || (regno == regi)) { @@ -139,15 +140,15 @@ fill_gregset (gregsetp, regno) } } -#endif /* HAVE_GREGSET_T */ +#endif /* HAVE_GREGSET_T */ #if defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T) /* Given a pointer to a floating point register set in /proc format - (fpregset_t *), unpack the register contents and supply them as gdb's - idea of the current floating point register values. */ + (fpregset_t *), unpack the register contents and supply them as gdb's + idea of the current floating point register values. */ -void +void supply_fpregset (fpregsetp) fpregset_t *fpregsetp; { @@ -155,9 +156,9 @@ supply_fpregset (fpregsetp) } /* Given a pointer to a floating point register set in /proc format - (fpregset_t *), update the register specified by REGNO from gdb's idea - of the current floating point register set. If REGNO is -1, update - them all. */ + (fpregset_t *), update the register specified by REGNO from gdb's idea + of the current floating point register set. If REGNO is -1, update + them all. */ void fill_fpregset (fpregsetp, regno) @@ -167,6 +168,6 @@ fill_fpregset (fpregsetp, regno) /* FIXME: see m68k-tdep.c for an example, for the m68k. */ } -#endif /* defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T) */ +#endif /* defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T) */ -#endif /* HAVE_SYS_PROCFS_H */ +#endif /* HAVE_SYS_PROCFS_H */ |