-/* Machine-dependent hooks for the unix child process stratum. This
- code is for the HP PA-RISC cpu.
+/* Machine-dependent hooks for the unix child process stratum, for HPUX PA-RISC.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993
+ Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
#include "inferior.h"
#include "target.h"
#include <sys/ptrace.h>
-#include <sys/param.h>
-#include <sys/user.h>
extern CORE_ADDR text_end;
scratch, 0);
if (errno != 0)
{
- sprintf (buf, "writing register number %d(%d)", regno, i);
+ /* Error, even if attached. Failing to write these two
+ registers is pretty serious. */
+ sprintf (buf, "writing register number %d", regno);
perror_with_name (buf);
}
}
*(int *) ®isters[REGISTER_BYTE (regno) + i], 0);
if (errno != 0)
{
- sprintf (buf, "writing register number %d(%d)", regno, i);
- perror_with_name (buf);
+ /* Warning, not error, in case we are attached; sometimes the
+ kernel doesn't let us at the registers. */
+ char *err = safe_strerror (errno);
+ char *msg = alloca (strlen (err) + 128);
+ sprintf (msg, "writing register %s: %s",
+ reg_names[regno], err);
+ warning (msg);
+ goto error_exit;
}
regaddr += sizeof(int);
}
{
if (CANNOT_STORE_REGISTER (regno))
continue;
- regaddr = register_addr (regno, offset);
- errno = 0;
- if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
- {
- scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
- ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- scratch, 0);
- if (errno != 0)
- {
- sprintf (buf, "writing register number %d(%d)", regno, i);
- perror_with_name (buf);
- }
- }
- else
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
- {
- errno = 0;
- ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- *(int *) ®isters[REGISTER_BYTE (regno) + i], 0);
- if (errno != 0)
- {
- sprintf (buf, "writing register number %d(%d)", regno, i);
- perror_with_name (buf);
- }
- regaddr += sizeof(int);
- }
+ store_inferior_registers (regno);
}
}
+ error_exit:
return;
}
-/* KERNEL_U_ADDR is the amount to subtract from u.u_ar0
- to get the offset in the core file of the register values. */
-
-/* Get kernel_u_addr using HPUX-style nlist(). */
-CORE_ADDR kernel_u_addr;
-
-struct hpnlist {
- char * n_name;
- long n_value;
- unsigned char n_type;
- unsigned char n_length;
- short n_almod;
- short n_unused;
-};
-static struct hpnlist nl[] = {{ "_u", -1, }, { (char *) 0, }};
-
-/* read the value of the u area from the hp-ux kernel */
-void _initialize_kernel_u_addr ()
-{
- struct user u;
- nlist ("/hp-ux", &nl);
- kernel_u_addr = nl[0].n_value;
-}
-
-#if !defined (offsetof)
-#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
-#endif
-
-/* U_REGS_OFFSET is the offset of the registers within the u area. */
-#if !defined (U_REGS_OFFSET)
-#define U_REGS_OFFSET \
- ptrace (PT_READ_U, inferior_pid, \
- (PTRACE_ARG3_TYPE) (offsetof (struct user, u_ar0)), 0, 0) \
- - KERNEL_U_ADDR
-#endif
-
/* Fetch one register. */
static void
regaddr += sizeof (int);
if (errno != 0)
{
- sprintf (mess, "reading register %s (#%d)", reg_names[regno], regno);
- perror_with_name (mess);
+ /* Warning, not error, in case we are attached; sometimes the
+ kernel doesn't let us at the registers. */
+ char *err = safe_strerror (errno);
+ char *msg = alloca (strlen (err) + 128);
+ sprintf (msg, "reading register %s: %s", reg_names[regno], err);
+ warning (msg);
+ goto error_exit;
}
}
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
buf[3] &= ~0x3;
supply_register (regno, buf);
+ error_exit:;
}
-
-
-/* Resume execution of the inferior process.
+/* Resume execution of process PID.
If STEP is nonzero, single-step it.
If SIGNAL is nonzero, give it that signal. */
void
-child_resume (step, signal)
+child_resume (pid, step, signal)
+ int pid;
int step;
int signal;
{
written a new PC value to the child.) */
if (step)
- ptrace (PT_SINGLE, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
+ ptrace (PT_SINGLE, pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
else
- ptrace (PT_CONTIN, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
+ ptrace (PT_CONTIN, pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
if (errno)
perror_with_name ("ptrace");
}
-/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
- in the NEW_SUN_PTRACE case.
- It ought to be straightforward. But it appears that writing did
- not write the data that I specified. I cannot understand where
- it got the data that it actually did write. */
-
/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
to debugger memory starting at MYADDR. Copy to inferior if
WRITE is nonzero.
projects / deliverable / binutils-gdb.git / blobdiff