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| author | Mark Kettenis <kettenis@gnu.org> | 2002-08-18 21:53:55 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@gnu.org> | 2002-08-18 21:53:55 +0000 |
| commit | d4e0bab44f5ebceb27ba9c277eb464ab51f5894c (patch) | |
| tree | 6ac95764ac7267df4f0fed8d18bc2ecb92c8b5c3 /gdb/i386v-nat.c | |
| parent | 46cac009b73a4d0194cf7c1b0c664ca21dcb4842 (diff) | |
| download | gdb-d4e0bab44f5ebceb27ba9c277eb464ab51f5894c.zip gdb-d4e0bab44f5ebceb27ba9c277eb464ab51f5894c.tar.gz gdb-d4e0bab44f5ebceb27ba9c277eb464ab51f5894c.tar.bz2 | |
* config/i386/nm-i386v.h: Add protection against
multiple-inclusion.
(i386_register_u_addr): Remove prototype.
(register_u_addr): New prototype.
(REGISTER_U_ADDR): Redefine accordingly.
* i386v-nat.c: Improve several comments.
(i386_register_u_addr): Change signature and rename to
register_u_addr. Use FP_REGNUM_P. Rewrite slightly to get rid of
ubase variable.
Diffstat (limited to 'gdb/i386v-nat.c')
| -rw-r--r-- | gdb/i386v-nat.c | 41 |
1 files changed, 19 insertions, 22 deletions
diff --git a/gdb/i386v-nat.c b/gdb/i386v-nat.c index c603b28..8180093 100644 --- a/gdb/i386v-nat.c +++ b/gdb/i386v-nat.c @@ -1,4 +1,4 @@ -/* Intel 386 native support for SYSV systems (pre-SVR4). +/* Intel 386 native support for System V systems (pre-SVR4). Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002 Free Software Foundation, Inc. @@ -62,8 +62,8 @@ #include "target.h" -/* this table must line up with REGISTER_NAMES in tm-i386v.h */ -/* symbols like 'EAX' come from <sys/reg.h> */ +/* Mapping between the general-purpose registers in `struct user' + format and GDB's register array layout. */ static int regmap[] = { EAX, ECX, EDX, EBX, @@ -72,37 +72,34 @@ static int regmap[] = DS, ES, FS, GS, }; -/* blockend is the value of u.u_ar0, and points to the - * place where GS is stored - */ +/* Support for the user struct. */ -int -i386_register_u_addr (int blockend, int regnum) +/* Return the address of register REGNUM. BLOCKEND is the value of + u.u_ar0, and points to the place where GS is stored. */ + +CORE_ADDR +register_u_addr (CORE_ADDR blockend, int regnum) { struct user u; - int fpstate; - int ubase; + CORE_ADDR fpstate; - ubase = blockend; - /* FIXME: Should have better way to test floating point range */ - if (regnum >= FP0_REGNUM && regnum <= (FP0_REGNUM + 7)) + if (FP_REGNUM_P (regnum)) { -#ifdef KSTKSZ /* SCO, and others? */ - ubase += 4 * (SS + 1) - KSTKSZ; - fpstate = ubase + ((char *) &u.u_fps.u_fpstate - (char *) &u); +#ifdef KSTKSZ /* SCO, and others? */ + blockend += 4 * (SS + 1) - KSTKSZ; + fpstate = blockend + ((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 = blockend + ((char *) &u.i387.st_space - (char *) &u); return (fpstate + 10 * (regnum - FP0_REGNUM)); #endif } - else - { - return (ubase + 4 * regmap[regnum]); - } + return (blockend + 4 * regmap[regnum]); } - + +/* Return the size of the user struct. */ + int kernel_u_size (void) { |