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Introduce target/target.h
This introduces target/target.h. This file declares some functions that the shared code can use and that clients must implement. It also changes some shared code to use these functions. gdb/ChangeLog: * target/target.h: New file. * Makefile.in (HFILES_NO_SRCDIR): Add target/target.h. * target.h: Include target/target.h. (target_read_memory, target_write_memory): Don't declare. * target.c (target_read_uint32): New function. * common/agent.c: Include target/target.h. [!GDBSERVER]: Don't include target.h. (helper_thread_id): Type changed to uint32_t. (agent_get_helper_thread_id): Use target_read_uint32. (agent_run_command): Always use target_read_memory and target_write_memory. (agent_capability): Type changed to uint32_t. (agent_capability_check): Use target_read_uint32. gdb/gdbserver/ChangeLog: * target.h: Include target/target.h. * target.c (target_read_memory, target_read_uint32) (target_write_memory): New functions.
This commit is contained in:
Gary Benson
parent
c5e92cca56
commit
721ec300e1
@ -1,3 +1,20 @@
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2014-09-11 Tom Tromey <tromey@redhat.com>
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Gary Benson <gbenson@redhat.com>
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* target/target.h: New file.
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* Makefile.in (HFILES_NO_SRCDIR): Add target/target.h.
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* target.h: Include target/target.h.
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(target_read_memory, target_write_memory): Don't declare.
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* target.c (target_read_uint32): New function.
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* common/agent.c: Include target/target.h.
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[!GDBSERVER]: Don't include target.h.
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(helper_thread_id): Type changed to uint32_t.
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(agent_get_helper_thread_id): Use target_read_uint32.
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(agent_run_command): Always use target_read_memory and
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target_write_memory.
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(agent_capability): Type changed to uint32_t.
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(agent_capability_check): Use target_read_uint32.
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2014-09-11 Gary Benson <gbenson@redhat.com>
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* common/common-debug.h (show_debug_regs): Declare.
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@ -938,7 +938,7 @@ target/wait.h target/waitstatus.h nat/linux-nat.h nat/linux-waitpid.h \
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common/print-utils.h common/rsp-low.h nat/x86-dregs.h x86-linux-nat.h \
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i386-linux-nat.h common/common-defs.h common/errors.h common/common-types.h \
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common/common-debug.h common/cleanups.h common/gdb_setjmp.h \
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common/common-exceptions.h
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common/common-exceptions.h target/target.h
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# Header files that already have srcdir in them, or which are in objdir.
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@ -21,10 +21,10 @@
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#include "server.h"
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#else
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#include "defs.h"
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#include "target.h"
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#include "infrun.h"
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#include "objfiles.h"
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#endif
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#include "target/target.h"
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#include <unistd.h>
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#include "agent.h"
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#include "filestuff.h"
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@ -62,7 +62,7 @@ struct ipa_sym_addresses
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/* Cache of the helper thread id. FIXME: this global should be made
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per-process. */
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static unsigned int helper_thread_id = 0;
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static uint32_t helper_thread_id = 0;
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static struct
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{
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@ -126,24 +126,10 @@ agent_get_helper_thread_id (void)
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{
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if (helper_thread_id == 0)
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{
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#ifdef GDBSERVER
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if (read_inferior_memory (ipa_sym_addrs.addr_helper_thread_id,
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(unsigned char *) &helper_thread_id,
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sizeof helper_thread_id))
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#else
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enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
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gdb_byte buf[4];
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if (target_read_memory (ipa_sym_addrs.addr_helper_thread_id,
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buf, sizeof buf) == 0)
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helper_thread_id = extract_unsigned_integer (buf, sizeof buf,
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byte_order);
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else
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#endif
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{
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if (target_read_uint32 (ipa_sym_addrs.addr_helper_thread_id,
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&helper_thread_id))
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warning (_("Error reading helper thread's id in lib"));
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}
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}
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return helper_thread_id;
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}
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@ -220,13 +206,8 @@ agent_run_command (int pid, const char *cmd, int len)
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int tid = agent_get_helper_thread_id ();
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ptid_t ptid = ptid_build (pid, tid, 0);
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#ifdef GDBSERVER
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int ret = write_inferior_memory (ipa_sym_addrs.addr_cmd_buf,
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(const unsigned char *) cmd, len);
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#else
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int ret = target_write_memory (ipa_sym_addrs.addr_cmd_buf,
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(gdb_byte *) cmd, len);
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#endif
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if (ret != 0)
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{
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@ -308,13 +289,8 @@ agent_run_command (int pid, const char *cmd, int len)
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if (fd >= 0)
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{
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#ifdef GDBSERVER
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if (read_inferior_memory (ipa_sym_addrs.addr_cmd_buf,
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(unsigned char *) cmd, IPA_CMD_BUF_SIZE))
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#else
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if (target_read_memory (ipa_sym_addrs.addr_cmd_buf, (gdb_byte *) cmd,
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IPA_CMD_BUF_SIZE))
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#endif
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{
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warning (_("Error reading command response"));
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return -1;
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@ -325,7 +301,7 @@ agent_run_command (int pid, const char *cmd, int len)
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}
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/* Each bit of it stands for a capability of agent. */
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static unsigned int agent_capability = 0;
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static uint32_t agent_capability = 0;
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/* Return true if agent has capability AGENT_CAP, otherwise return false. */
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@ -334,20 +310,8 @@ agent_capability_check (enum agent_capa agent_capa)
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{
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if (agent_capability == 0)
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{
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#ifdef GDBSERVER
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if (read_inferior_memory (ipa_sym_addrs.addr_capability,
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(unsigned char *) &agent_capability,
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sizeof agent_capability))
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#else
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enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
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gdb_byte buf[4];
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if (target_read_memory (ipa_sym_addrs.addr_capability,
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buf, sizeof buf) == 0)
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agent_capability = extract_unsigned_integer (buf, sizeof buf,
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byte_order);
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else
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#endif
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if (target_read_uint32 (ipa_sym_addrs.addr_capability,
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&agent_capability))
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warning (_("Error reading capability of agent"));
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}
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return agent_capability & agent_capa;
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@ -1,3 +1,10 @@
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2014-09-11 Tom Tromey <tromey@redhat.com>
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Gary Benson <gbenson@redhat.com>
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* target.h: Include target/target.h.
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* target.c (target_read_memory, target_read_uint32)
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(target_write_memory): New functions.
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2014-09-11 Gary Benson <gbenson@redhat.com>
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* server.h (debug_hw_points): Don't declare.
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@ -48,6 +48,22 @@ read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len)
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return res;
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}
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/* See target/target.h. */
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int
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target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
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{
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return read_inferior_memory (memaddr, myaddr, len);
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}
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/* See target/target.h. */
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int
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target_read_uint32 (CORE_ADDR memaddr, uint32_t *result)
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{
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return read_inferior_memory (memaddr, (gdb_byte *) result, sizeof (*result));
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}
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int
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write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
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int len)
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@ -71,6 +87,14 @@ write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
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return res;
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}
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/* See target/target.h. */
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int
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target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
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{
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return write_inferior_memory (memaddr, myaddr, len);
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}
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ptid_t
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mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
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int connected_wait)
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@ -21,6 +21,7 @@
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#ifndef TARGET_H
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#define TARGET_H
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#include "target/target.h"
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#include "target/resume.h"
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#include "target/wait.h"
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#include "target/waitstatus.h"
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16
gdb/target.c
16
gdb/target.c
@ -1269,6 +1269,22 @@ target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
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return TARGET_XFER_E_IO;
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}
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/* See target/target.h. */
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int
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target_read_uint32 (CORE_ADDR memaddr, uint32_t *result)
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{
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gdb_byte buf[4];
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int r;
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r = target_read_memory (memaddr, buf, sizeof buf);
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if (r != 0)
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return r;
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*result = extract_unsigned_integer (buf, sizeof buf,
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gdbarch_byte_order (target_gdbarch ()));
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return 0;
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}
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/* Like target_read_memory, but specify explicitly that this is a read
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from the target's raw memory. That is, this read bypasses the
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dcache, breakpoint shadowing, etc. */
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@ -58,6 +58,7 @@ struct dcache_struct;
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it goes into the file stratum, which is always below the process
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stratum. */
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#include "target/target.h"
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#include "target/resume.h"
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#include "target/wait.h"
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#include "target/waitstatus.h"
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@ -1292,8 +1293,7 @@ int target_supports_disable_randomization (void);
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extern int target_read_string (CORE_ADDR, char **, int, int *);
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extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr,
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ssize_t len);
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/* For target_read_memory see target/target.h. */
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extern int target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr,
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ssize_t len);
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@ -1302,8 +1302,7 @@ extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
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extern int target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
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extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
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ssize_t len);
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/* For target_write_memory see target/target.h. */
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extern int target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
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ssize_t len);
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62
gdb/target/target.h
Normal file
62
gdb/target/target.h
Normal file
@ -0,0 +1,62 @@
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/* Declarations for common target functions.
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Copyright (C) 1986-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef TARGET_COMMON_H
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#define TARGET_COMMON_H
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#include "target/waitstatus.h"
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#include <stdint.h>
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/* This header is a stopgap until more code is shared. */
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/* Read LEN bytes of target memory at address MEMADDR, placing the
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results in GDB's memory at MYADDR. Return zero for success,
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nonzero if any error occurs. This function must be provided by
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the client. Implementations of this function may define and use
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their own error codes, but functions in the common, nat and target
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directories must treat the return code as opaque. No guarantee is
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made about the contents of the data at MYADDR if any error
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occurs. */
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extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr,
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ssize_t len);
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/* Read an unsigned 32-bit integer in the target's format from target
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memory at address MEMADDR, storing the result in GDB's format in
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GDB's memory at RESULT. Return zero for success, nonzero if any
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error occurs. This function must be provided by the client.
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Implementations of this function may define and use their own error
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codes, but functions in the common, nat and target directories must
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treat the return code as opaque. No guarantee is made about the
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contents of the data at RESULT if any error occurs. */
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extern int target_read_uint32 (CORE_ADDR memaddr, uint32_t *result);
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/* Write LEN bytes from MYADDR to target memory at address MEMADDR.
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Return zero for success, nonzero if any error occurs. This
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function must be provided by the client. Implementations of this
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function may define and use their own error codes, but functions
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in the common, nat and target directories must treat the return
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code as opaque. No guarantee is made about the contents of the
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data at MEMADDR if any error occurs. */
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extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
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ssize_t len);
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#endif /* TARGET_COMMON_H */
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