/* <proc_service.h> implementation.
- Copyright 1999, 2000, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "gdb_proc_service.h"
-#include <sys/procfs.h>
-
+#include "gdbcore.h"
#include "inferior.h"
+#include "gdbthread.h"
#include "symtab.h"
#include "target.h"
+#include "regcache.h"
+#include "objfiles.h"
-/* Prototypes for supply_gregset etc. */
-#include "gregset.h"
-\f
-
-/* Fix-up some broken systems. */
-
-/* The prototypes in <proc_service.h> are slightly different on older
- systems. Compensate for the discrepancies. */
-
-#ifdef PROC_SERVICE_IS_OLD
-typedef const struct ps_prochandle *gdb_ps_prochandle_t;
-typedef char *gdb_ps_read_buf_t;
-typedef char *gdb_ps_write_buf_t;
-typedef int gdb_ps_size_t;
-#else
-typedef struct ps_prochandle *gdb_ps_prochandle_t;
-typedef void *gdb_ps_read_buf_t;
-typedef const void *gdb_ps_write_buf_t;
-typedef size_t gdb_ps_size_t;
-#endif
-\f
+#include "gdb_proc_service.h"
-/* Building process ids. */
+#include <sys/procfs.h>
-#define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0)
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
\f
/* Helper functions. */
-/* Transfer LEN bytes of memory between BUF and address ADDR in the
- process specified by PH. If WRITE, transfer them to the process,
- else transfer them from the process. Returns PS_OK for success,
- PS_ERR on failure.
-
- This is a helper function for ps_pdread, ps_pdwrite, ps_ptread and
- ps_ptwrite. */
+/* Convert a psaddr_t to a CORE_ADDR. */
-static ps_err_e
-ps_xfer_memory (const struct ps_prochandle *ph, paddr_t addr,
- char *buf, size_t len, int write)
+static CORE_ADDR
+ps_addr_to_core_addr (psaddr_t addr)
{
- struct cleanup *old_chain = save_inferior_ptid ();
- int ret;
-
- inferior_ptid = pid_to_ptid (ph->pid);
-
- if (write)
- ret = target_write_memory (addr, buf, len);
+ if (exec_bfd && bfd_get_sign_extend_vma (exec_bfd))
+ return (intptr_t) addr;
else
- ret = target_read_memory (addr, buf, len);
-
- do_cleanups (old_chain);
-
- return (ret == 0 ? PS_OK : PS_ERR);
-}
-\f
-
-/* Stop the target process PH. */
-
-ps_err_e
-ps_pstop (gdb_ps_prochandle_t ph)
-{
- /* The process is always stopped when under control of GDB. */
- return PS_OK;
-}
-
-/* Resume the target process PH. */
-
-ps_err_e
-ps_pcontinue (gdb_ps_prochandle_t ph)
-{
- /* Pretend we did successfully continue the process. GDB will take
- care of it later on. */
- return PS_OK;
+ return (uintptr_t) addr;
}
-/* Stop the lightweight process LWPID within the target process PH. */
+/* Convert a CORE_ADDR to a psaddr_t. */
-ps_err_e
-ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid)
+static psaddr_t
+core_addr_to_ps_addr (CORE_ADDR addr)
{
- /* All lightweight processes are stopped when under control of GDB. */
- return PS_OK;
-}
-
-/* Resume the lightweight process (LWP) LWPID within the target
- process PH. */
-
-ps_err_e
-ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid)
-{
- /* Pretend we did successfully continue LWPID. GDB will take care
- of it later on. */
- return PS_OK;
+ if (exec_bfd && bfd_get_sign_extend_vma (exec_bfd))
+ return (psaddr_t) (intptr_t) addr;
+ else
+ return (psaddr_t) (uintptr_t) addr;
}
-/* Get the size of the architecture-dependent extra state registers
- for LWP LWPID within the target process PH and return it in
- *XREGSIZE. */
-
-ps_err_e
-ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize)
-{
- /* FIXME: Not supported yet. */
- return PS_OK;
-}
+/* Transfer LEN bytes of memory between BUF and address ADDR in the
+ process specified by PH. If WRITE, transfer them to the process,
+ else transfer them from the process. Returns PS_OK for success,
+ PS_ERR on failure.
-/* Get the extra state registers of LWP LWPID within the target
- process PH and store them in XREGSET. */
+ This is a helper function for ps_pdread and ps_pdwrite. */
-ps_err_e
-ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset)
+static ps_err_e
+ps_xfer_memory (const struct ps_prochandle *ph, psaddr_t addr,
+ gdb_byte *buf, size_t len, int write)
{
- /* FIXME: Not supported yet. */
- return PS_OK;
-}
+ scoped_restore_current_inferior restore_inferior;
+ set_current_inferior (ph->thread->inf);
-/* Set the extra state registers of LWP LWPID within the target
- process PH from XREGSET. */
+ scoped_restore_current_program_space restore_current_progspace;
+ set_current_program_space (ph->thread->inf->pspace);
-ps_err_e
-ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset)
-{
- /* FIXME: Not supported yet. */
- return PS_OK;
-}
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
+ inferior_ptid = ph->thread->ptid;
-/* Log (additional) diognostic information. */
+ CORE_ADDR core_addr = ps_addr_to_core_addr (addr);
-void
-ps_plog (const char *fmt, ...)
-{
- va_list args;
-
- va_start (args, fmt);
- vfprintf_filtered (gdb_stderr, fmt, args);
+ int ret;
+ if (write)
+ ret = target_write_memory (core_addr, buf, len);
+ else
+ ret = target_read_memory (core_addr, buf, len);
+ return (ret == 0 ? PS_OK : PS_ERR);
}
+\f
/* Search for the symbol named NAME within the object named OBJ within
the target process PH. If the symbol is found the address of the
symbol is stored in SYM_ADDR. */
ps_err_e
-ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj,
- const char *name, paddr_t *sym_addr)
+ps_pglobal_lookup (struct ps_prochandle *ph, const char *obj,
+ const char *name, psaddr_t *sym_addr)
{
- struct minimal_symbol *ms;
+ inferior *inf = ph->thread->inf;
+
+ scoped_restore_current_program_space restore_pspace;
+
+ set_current_program_space (inf->pspace);
/* FIXME: kettenis/2000-09-03: What should we do with OBJ? */
- ms = lookup_minimal_symbol (name, NULL, NULL);
- if (ms == NULL)
+ bound_minimal_symbol ms = lookup_minimal_symbol (name, NULL, NULL);
+ if (ms.minsym == NULL)
return PS_NOSYM;
- *sym_addr = SYMBOL_VALUE_ADDRESS (ms);
+ *sym_addr = core_addr_to_ps_addr (BMSYMBOL_VALUE_ADDRESS (ms));
return PS_OK;
}
them into BUF. */
ps_err_e
-ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr,
- gdb_ps_read_buf_t buf, gdb_ps_size_t size)
+ps_pdread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size)
{
- return ps_xfer_memory (ph, addr, buf, size, 0);
+ return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 0);
}
/* Write SIZE bytes from BUF into the target process PH at address ADDR. */
ps_err_e
-ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr,
- gdb_ps_write_buf_t buf, gdb_ps_size_t size)
+ps_pdwrite (struct ps_prochandle *ph, psaddr_t addr,
+ const void *buf, size_t size)
{
- return ps_xfer_memory (ph, addr, (char *) buf, size, 1);
+ return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 1);
}
-/* Read SIZE bytes from the target process PH at address ADDR and copy
- them into BUF. */
+/* Get a regcache for LWPID using its inferior's "main" architecture,
+ which is the register set libthread_db expects to be using. In
+ multi-arch debugging scenarios, the thread's architecture may
+ differ from the inferior's "main" architecture. */
-ps_err_e
-ps_ptread (gdb_ps_prochandle_t ph, paddr_t addr,
- gdb_ps_read_buf_t buf, gdb_ps_size_t size)
+static struct regcache *
+get_ps_regcache (struct ps_prochandle *ph, lwpid_t lwpid)
{
- return ps_xfer_memory (ph, addr, buf, size, 0);
-}
-
-/* Write SIZE bytes from BUF into the target process PH at address ADDR. */
-
-ps_err_e
-ps_ptwrite (gdb_ps_prochandle_t ph, paddr_t addr,
- gdb_ps_write_buf_t buf, gdb_ps_size_t size)
-{
- return ps_xfer_memory (ph, addr, (char *) buf, size, 1);
+ inferior *inf = ph->thread->inf;
+ return get_thread_arch_regcache (inf->process_target (),
+ ptid_t (inf->pid, lwpid),
+ inf->gdbarch);
}
/* Get the general registers of LWP LWPID within the target process PH
and store them in GREGSET. */
ps_err_e
-ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset)
+ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset)
{
- struct cleanup *old_chain = save_inferior_ptid ();
-
- inferior_ptid = BUILD_LWP (lwpid, ph->pid);
+ struct regcache *regcache = get_ps_regcache (ph, lwpid);
- target_fetch_registers (-1);
- fill_gregset ((gdb_gregset_t *) gregset, -1);
+ target_fetch_registers (regcache, -1);
+ fill_gregset (regcache, (gdb_gregset_t *) gregset, -1);
- do_cleanups (old_chain);
return PS_OK;
}
from GREGSET. */
ps_err_e
-ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset)
+ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, const prgregset_t gregset)
{
- struct cleanup *old_chain = save_inferior_ptid ();
-
- inferior_ptid = BUILD_LWP (lwpid, ph->pid);
+ struct regcache *regcache = get_ps_regcache (ph, lwpid);
- /* FIXME: We should really make supply_gregset const-correct. */
- supply_gregset ((gdb_gregset_t *) gregset);
- target_store_registers (-1);
+ supply_gregset (regcache, (const gdb_gregset_t *) gregset);
+ target_store_registers (regcache, -1);
- do_cleanups (old_chain);
return PS_OK;
}
process PH and store them in FPREGSET. */
ps_err_e
-ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
- gdb_prfpregset_t *fpregset)
+ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid,
+ prfpregset_t *fpregset)
{
- struct cleanup *old_chain = save_inferior_ptid ();
+ struct regcache *regcache = get_ps_regcache (ph, lwpid);
- inferior_ptid = BUILD_LWP (lwpid, ph->pid);
+ target_fetch_registers (regcache, -1);
+ fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1);
- target_fetch_registers (-1);
- fill_fpregset ((gdb_fpregset_t *) fpregset, -1);
-
- do_cleanups (old_chain);
return PS_OK;
}
process PH from FPREGSET. */
ps_err_e
-ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
- const gdb_prfpregset_t *fpregset)
+ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid,
+ const prfpregset_t *fpregset)
{
- struct cleanup *old_chain = save_inferior_ptid ();
-
- inferior_ptid = BUILD_LWP (lwpid, ph->pid);
+ struct regcache *regcache = get_ps_regcache (ph, lwpid);
- /* FIXME: We should really make supply_fpregset const-correct. */
- supply_fpregset ((gdb_fpregset_t *) fpregset);
- target_store_registers (-1);
+ supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset);
+ target_store_registers (regcache, -1);
- do_cleanups (old_chain);
return PS_OK;
}
-- not used on Solaris. */
pid_t
-ps_getpid (gdb_ps_prochandle_t ph)
+ps_getpid (struct ps_prochandle *ph)
{
- return ph->pid;
+ return ph->thread->ptid.pid ();
}
+void _initialize_proc_service ();
void
-_initialize_proc_service (void)
+_initialize_proc_service ()
{
/* This function solely exists to make sure this module is linked
into the final binary. */
projects / deliverable / binutils-gdb.git / blobdiff