diff options
author | Jim Blandy <jimb@codesourcery.com> | 2000-04-19 23:02:56 +0000 |
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committer | Jim Blandy <jimb@codesourcery.com> | 2000-04-19 23:02:56 +0000 |
commit | 77d2aaae4532d2de3b7d0b79e08c8c3024a87e6b (patch) | |
tree | a849907ec7df8f517869780ca5ed39d4f89f50dd | |
parent | 8f0a00f878bd8cb9c781b18ec421bb0ab96b5eb2 (diff) | |
download | gdb-77d2aaae4532d2de3b7d0b79e08c8c3024a87e6b.zip gdb-77d2aaae4532d2de3b7d0b79e08c8c3024a87e6b.tar.gz gdb-77d2aaae4532d2de3b7d0b79e08c8c3024a87e6b.tar.bz2 |
My last commit introduced a bunch of mysterious whitespace changes; I
don't know where they came from. They weren't intentional, so this
change reverts them.
-rw-r--r-- | gdb/i386v-nat.c | 168 |
1 files changed, 126 insertions, 42 deletions
diff --git a/gdb/i386v-nat.c b/gdb/i386v-nat.c index 274d59e..5618687 100644 --- a/gdb/i386v-nat.c +++ b/gdb/i386v-nat.c @@ -1,31 +1,30 @@ /* Intel 386 native support for SYSV systems (pre-SVR4). Copyright (C) 1988, 89, 91, 92, 94, 96, 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" #ifdef HAVE_PTRACE_H -#include <ptrace.h> +# include <ptrace.h> #else -#ifdef HAVE_SYS_PTRACE_H -#include <sys/ptrace.h> -#endif +# ifdef HAVE_SYS_PTRACE_H +# include <sys/ptrace.h> +# endif #endif #include "frame.h" @@ -53,11 +52,11 @@ */ #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS -#ifdef HAVE_ASM_DEBUGREG_H -#include <asm/debugreg.h> -#else -#include <sys/debugreg.h> -#endif +# ifdef HAVE_ASM_DEBUGREG_H +# include <asm/debugreg.h> +# else +# include <sys/debugreg.h> +# endif #endif #include <sys/file.h> @@ -70,11 +69,11 @@ #include "floatformat.h" #include "target.h" - + /* this table must line up with REGISTER_NAMES in tm-i386v.h */ /* symbols like 'EAX' come from <sys/reg.h> */ -static int regmap[] = +static int regmap[] = { EAX, ECX, EDX, EBX, UESP, EBP, ESI, EDI, @@ -97,22 +96,22 @@ i386_register_u_addr (blockend, regnum) ubase = blockend; /* FIXME: Should have better way to test floating point range */ - if (regnum >= FP0_REGNUM && regnum <= (FP0_REGNUM + 7)) + if (regnum >= FP0_REGNUM && regnum <= (FP0_REGNUM + 7)) { -#ifdef KSTKSZ /* SCO, and others? */ +#ifdef KSTKSZ /* SCO, and others? */ ubase += 4 * (SS + 1) - KSTKSZ; - fpstate = ubase + ((char *) &u.u_fps.u_fpstate - (char *) &u); + fpstate = ubase + ((char *)&u.u_fps.u_fpstate - (char *)&u); return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM)); #else - fpstate = ubase + ((char *) &u.i387.st_space - (char *) &u); + fpstate = ubase + ((char *)&u.i387.st_space - (char *)&u); return (fpstate + 10 * (regnum - FP0_REGNUM)); #endif - } + } else { return (ubase + 4 * regmap[regnum]); } - + } int @@ -135,7 +134,7 @@ static CORE_ADDR address_lookup[DR_LASTADDR - DR_FIRSTADDR + 1]; static int i386_insert_aligned_watchpoint PARAMS ((int, CORE_ADDR, CORE_ADDR, int, - int)); + int)); static int i386_insert_nonaligned_watchpoint PARAMS ((int, CORE_ADDR, CORE_ADDR, int, @@ -165,7 +164,7 @@ i386_insert_aligned_watchpoint (pid, waddr, addr, len, rw) int read_write_bits, len_bits; int free_debug_register; int register_number; - + /* Look for a free debug register. */ for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++) { @@ -196,7 +195,7 @@ i386_insert_aligned_watchpoint (pid, waddr, addr, len, rw) } else return i386_insert_nonaligned_watchpoint (pid, waddr, addr, len, rw); - + free_debug_register = i; register_number = free_debug_register - DR_FIRSTADDR; debug_control_mirror |= @@ -206,7 +205,7 @@ i386_insert_aligned_watchpoint (pid, waddr, addr, len, rw) (1 << (DR_LOCAL_ENABLE_SHIFT + DR_ENABLE_SIZE * register_number)); debug_control_mirror |= DR_LOCAL_SLOWDOWN; debug_control_mirror &= ~DR_CONTROL_RESERVED; - + ptrace (6, pid, offsetof (struct user, u_debugreg[DR_CONTROL]), debug_control_mirror); ptrace (6, pid, offsetof (struct user, u_debugreg[free_debug_register]), @@ -229,12 +228,11 @@ i386_insert_nonaligned_watchpoint (pid, waddr, addr, len, rw) int size; int rv; - static int size_try_array[4][4] = - { - { 1, 1, 1, 1 }, /* trying size one */ - { 2, 1, 2, 1 }, /* trying size two */ - { 2, 1, 2, 1 }, /* trying size three */ - { 4, 1, 2, 1 } /* trying size four */ + static int size_try_array[16] = { + 1, 1, 1, 1, /* trying size one */ + 2, 1, 2, 1, /* trying size two */ + 2, 1, 2, 1, /* trying size three */ + 4, 1, 2, 1 /* trying size four */ }; rv = 0; @@ -242,7 +240,8 @@ i386_insert_nonaligned_watchpoint (pid, waddr, addr, len, rw) { align = addr % 4; /* Four is the maximum length for 386. */ - size = size_try_array[len > 4 ? 3 : len - 1][align]; + size = (len > 4) ? 3 : len - 1; + size = size_try_array[size * 4 + align]; rv = i386_insert_aligned_watchpoint (pid, waddr, addr, size, rw); if (rv) @@ -288,7 +287,7 @@ i386_remove_watchpoint (pid, addr, len) CORE_ADDR i386_stopped_by_watchpoint (pid) - int pid; + int pid; { int i; int status; @@ -306,3 +305,88 @@ i386_stopped_by_watchpoint (pid) } #endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */ + +#if 0 +/* using FLOAT_INFO as is would be a problem. FLOAT_INFO is called + via a command xxx and eventually calls ptrace without ever having + traversed the target vector. This would be terribly impolite + behaviour for a sun4 hosted remote gdb. + + A fix might be to move this code into the "info registers" command. + rich@cygnus.com 15 Sept 92. */ +i386_float_info () +{ + struct user u; /* just for address computations */ + int i; + /* fpstate defined in <sys/user.h> */ + struct fpstate *fpstatep; + char buf[sizeof (struct fpstate) + 2 * sizeof (int)]; + unsigned int uaddr; + char fpvalid = 0; + unsigned int rounded_addr; + unsigned int rounded_size; + extern int corechan; + int skip; + + uaddr = (char *)&u.u_fpvalid - (char *)&u; + if (target_has_execution) + { + unsigned int data; + unsigned int mask; + + rounded_addr = uaddr & -sizeof (int); + data = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) rounded_addr, 0); + mask = 0xff << ((uaddr - rounded_addr) * 8); + + fpvalid = ((data & mask) != 0); + } +#if 0 + else + { + if (lseek (corechan, uaddr, 0) < 0) + perror ("seek on core file"); + if (myread (corechan, &fpvalid, 1) < 0) + perror ("read on core file"); + + } +#endif /* no core support yet */ + + if (fpvalid == 0) + { + printf_unfiltered ("no floating point status saved\n"); + return; + } + + uaddr = (char *)&U_FPSTATE(u) - (char *)&u; + if (target_has_execution) + { + int *ip; + + rounded_addr = uaddr & -sizeof (int); + rounded_size = (((uaddr + sizeof (struct fpstate)) - uaddr) + + sizeof (int) - 1) / sizeof (int); + skip = uaddr - rounded_addr; + + ip = (int *)buf; + for (i = 0; i < rounded_size; i++) + { + *ip++ = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) rounded_addr, 0); + rounded_addr += sizeof (int); + } + } +#if 0 + else + { + if (lseek (corechan, uaddr, 0) < 0) + perror_with_name ("seek on core file"); + if (myread (corechan, buf, sizeof (struct fpstate)) < 0) + perror_with_name ("read from core file"); + skip = 0; + } +#endif /* 0 */ + + fpstatep = (struct fpstate *)(buf + skip); + print_387_status (fpstatep->status, (struct env387 *)fpstatep->state); +} + +#endif /* never */ |