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* gdbserver/low-linux.c [I386_GNULINUX_TARGET]: Cleanup code and 

make it work again.
(NUM_FREGS): Redefine to 0.
(NUM_REGS): Redefine as NUM_GREGS.
(i386_register_byte, i386_register_raw_size): Update from
i386-tdep.c.  Add comment about their origin.
(regmap, register_u_addr): Take these from i386-linux-nat.c.
(i386_register_u_addr): Removed.
This commit is contained in:
Mark Kettenis 2001-03-28 09:15:22 +00:00
parent b9511b9a9a
commit 0eebe06ae6
2 changed files with 41 additions and 27 deletions
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9
gdb/ChangeLog
View File

@ -1,5 +1,14 @@
2001-03-28 Mark Kettenis <kettenis@gnu.org>
* gdbserver/low-linux.c [I386_GNULINUX_TARGET]: Cleanup code and
make it work again.
(NUM_FREGS): Redefine to 0.
(NUM_REGS): Redefine as NUM_GREGS.
(i386_register_byte, i386_register_raw_size): Update from
i386-tdep.c. Add comment about their origin.
(regmap, register_u_addr): Take these from i386-linux-nat.c.
(i386_register_u_addr): Removed.
* i386-linux-nat.c (i386_linux_dr_get): Return 0 if ptrace call
fails instead of calling perror_with_name. This should fix
debugging remote i386 targets with a native Linux/x86 GDB. Add

59
gdb/gdbserver/low-linux.c
View File

@ -155,8 +155,26 @@ myresume (int step, int signal)
#endif
#ifdef I386_GNULINUX_TARGET
/* i386_register_raw_size[i] is the number of bytes of storage in the
actual machine representation for register i. */
/* This module only supports access to the general purpose registers.
Adjust the relevant constants accordingly.
FIXME: kettenis/2001-03-28: We should really use PTRACE_GETREGS to
get at the registers. Better yet, we should try to share code with
i386-linux-nat.c. */
#undef NUM_FREGS
#define NUM_FREGS 0
#undef NUM_REGS
#define NUM_REGS NUM_GREGS
/* This stuff comes from i386-tdep.c. */
/* i386_register_byte[i] is the offset into the register file of the
start of register number i. We initialize this from
i386_register_raw_size. */
int i386_register_byte[MAX_NUM_REGS];
/* i386_register_raw_size[i] is the number of bytes of storage in
GDB's register array occupied by register i. */
int i386_register_raw_size[MAX_NUM_REGS] = {
4, 4, 4, 4,
4, 4, 4, 4,
@ -171,8 +189,6 @@ int i386_register_raw_size[MAX_NUM_REGS] = {
4
};
int i386_register_byte[MAX_NUM_REGS];
static void
initialize_arch (void)
{
@ -190,36 +206,25 @@ initialize_arch (void)
}
}
/* this table must line up with REGISTER_NAMES in tm-i386v.h */
/* symbols like 'EAX' come from <sys/reg.h> */
static int regmap[] =
/* This stuff comes from i386-linux-nat.c. */
/* Mapping between the general-purpose registers in `struct user'
format and GDB's register array layout. */
static int regmap[] =
{
EAX, ECX, EDX, EBX,
UESP, EBP, ESI, EDI,
EIP, EFL, CS, SS,
DS, ES, FS, GS,
DS, ES, FS, GS
};
int
i386_register_u_addr (int blockend, int regnum)
{
#if 0
/* this will be needed if fp registers are reinstated */
/* for now, you can look at them with 'info float'
* sys5 wont let you change them with ptrace anyway
*/
if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM)
{
int ubase, fpstate;
struct user u;
ubase = blockend + 4 * (SS + 1) - KSTKSZ;
fpstate = ubase + ((char *) &u.u_fpstate - (char *) &u);
return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM));
}
else
#endif
return (blockend + 4 * regmap[regnum]);
/* Return the address of register REGNUM. BLOCKEND is the value of
u.u_ar0, which should point to the registers. */
CORE_ADDR
register_u_addr (CORE_ADDR blockend, int regnum)
{
return (blockend + 4 * regmap[regnum]);
}
#elif defined(TARGET_M68K)
static void