gdb/gdb-rhbz795424-bitpos-22of25.patch

From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Fedora GDB patches <invalid@email.com>
Date: Fri, 27 Oct 2017 21:07:50 +0200
Subject: Expand watchpoint lengths to LONGEST

FileName: gdb-rhbz795424-bitpos-22of25.patch

;; Fix `GDB cannot access struct member whose offset is larger than 256MB'
;; (RH BZ 795424).
;;=push

http://sourceware.org/ml/gdb-patches/2012-09/msg00629.html

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Hi,

This is part three of the bitpos expansion change.  Some architectures
allow arbitrary length watchpoints and combined with the fact that type
lengths could be large enough, we need LONGEST for watchpoint lengths.
It is architecture dependent however, whether the LONGEST is needed or
not.  This patch updates the signatures of watchpoint insertion and
removal functions of all architectures (to comply with the function
signatures in the callback struct), but expands types only in
architectures that need it.  Tested on Fedora 16 x86_64.

Regards,
Siddhesh
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gdb/ChangeLog:

	* arm-linux-nat.c (arm_linux_insert_watchpoint): Expand
	parameter LEN to LONGEST.
	(arm_linux_remove_watchpoint): Likewise.
	(arm_linux_watchpoint_addr_within_range): Expand parameter
	LENGTH to LONGEST.
	* i386-nat.c (i386_insert_watchpoint): Expand parameter LEN to
	LONGEST.
	(i386_remove_watchpoint): Likewise.
	* ia64-linux-nat.c (ia64_linux_insert_watchpoint): Likewise.
	(ia64_linux_remove_watchpoint): Likewise.
	* inf-ttrace.c (inf_ttrace_insert_watchpoint): Likewise.
	Expand NUM_PAGES, PAGE to LONGEST.
	(inf_ttrace_remove_watchpoint): Likewise.
	* mips-linux-nat.c (mips_linux_insert_watchpoint): Expand
	parameter LEN to LONGEST.
	(mips_linux_remove_watchpoint): Likewise.
	* nto-procfs.c (procfs_remove_hw_watchpoint): Likewise.
	(procfs_insert_hw_watchpoint): Likewise.
	* ppc-linux-nat.c (calculate_dvc): Likewise.  Expand I,
	NUM_BYTE_ENABLE to LONGEST.
	(check_condition): Expand parameter LEN to point to LONGEST.
	(ppc_linux_can_accel_watchpoint_condition): Expand parameter
	LEN to LONGEST.
	(create_watchpoint_request): Likewise.
	(ppc_linux_insert_watchpoint): Likewise.
	(ppc_linux_remove_watchpoint): Likewise.
	(ppc_linux_watchpoint_addr_within_range): Expand parameter
	LENGTH to LONGEST.
	* procfs.c (proc_set_watchpoint): Expand parameter LEN to
	LONGEST.
	(procfs_set_watchpoint): Likewise.
	(procfs_insert_watchpoint): Likewise.
	(procfs_remove_watchpoint): Likewise.
	* remote-m32r-sdi.c (m32r_insert_watchpoint): Likewise.  Use
	plongest to format print LEN.
	(m32r_remove_watchpoint): Likewise.
	* remote-mips.c (mips_insert_watchpoint): Expand parameter LEN
	to LONGEST.
	(mips_remove_watchpoint): Likewise.
	* remote.c (remote_insert_watchpoint): Likewise.
	Use phex_nz to format print LEN.
	(remote_remove_watchpoint): Likewise.
	(remote_watchpoint_addr_within_range): Expand parameter LENGTH
	to LONGEST.
	* s390-linux-nat.c (s390_insert_watchpoint): Expand parameter LEN to
	LONGEST.
	(s390_remove_watchpoint): Likewise.
	* target.c (update_current_target): Expand parameter LEN for
	callbacks to TO_INSERT_WATCHPOINT, TO_REMOVE_WATCHPOINT,
	TO_CAN_ACCEL_WATCHPOINT_CONDITION, to LONGEST.
	(default_watchpoint_addr_within_range): Expand parameter
	LENGTH to LONGEST.
	(debug_to_can_accel_watchpoint_condition): Expand parameter LEN
	to LONGEST.  Use plongest to format print LEN.
	(debug_to_watchpoint_addr_within_range): Expand parameter LENGTH
	to LONGEST.  Use plongest to format print LENGTH.
	(debug_to_insert_watchpoint): Expand parameter LEN to LONGEST.
	Use plongest to format print LEN.
	(debug_to_remove_watchpoint): Likewise.
	* target.h (struct target_ops): Expand parameter LEN of
	TO_REMOVE_WATCHPOINT, TO_INSERT_WATCHPOINT,
	TO_WATCHPOINT_ADDR_WITHIN_RANGE and
	TO_CAN_ACCEL_WATCHPOINT_CONDITION to LONGEST.

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---
 gdb/aarch64-linux-nat.c          |  2 +-
 gdb/arm-linux-nat.c              |  2 +-
 gdb/nat/aarch64-linux-hw-point.c | 21 +++++++++++----------
 gdb/nat/aarch64-linux-hw-point.h |  4 ++--
 gdb/ppc-linux-nat.c              | 14 +++++++-------
 gdb/procfs.c                     |  4 ++--
 gdb/remote.c                     |  6 +++---
 gdb/target-delegates.c           | 14 +++++++-------
 gdb/target.c                     |  4 ++--
 gdb/target.h                     |  4 ++--
 10 files changed, 38 insertions(+), 37 deletions(-)

diff --git a/gdb/aarch64-linux-nat.c b/gdb/aarch64-linux-nat.c
index 08e6f4d4fd..f08bf039e4 100644
--- a/gdb/aarch64-linux-nat.c
+++ b/gdb/aarch64-linux-nat.c
@@ -767,7 +767,7 @@ aarch64_linux_stopped_by_watchpoint (struct target_ops *ops)
 static int
 aarch64_linux_watchpoint_addr_within_range (struct target_ops *target,
 					    CORE_ADDR addr,
-					    CORE_ADDR start, int length)
+					    CORE_ADDR start, LONGEST length)
 {
   return start <= addr && start + length - 1 >= addr;
 }
diff --git a/gdb/arm-linux-nat.c b/gdb/arm-linux-nat.c
index 3b7aa40db8..48dfe22ce1 100644
--- a/gdb/arm-linux-nat.c
+++ b/gdb/arm-linux-nat.c
@@ -1177,7 +1177,7 @@ arm_linux_stopped_by_watchpoint (struct target_ops *ops)
 static int
 arm_linux_watchpoint_addr_within_range (struct target_ops *target,
 					CORE_ADDR addr,
-					CORE_ADDR start, int length)
+					CORE_ADDR start, LONGEST length)
 {
   return start <= addr && start + length - 1 >= addr;
 }
diff --git a/gdb/nat/aarch64-linux-hw-point.c b/gdb/nat/aarch64-linux-hw-point.c
index ce26f28fad..e9ebc5fba8 100644
--- a/gdb/nat/aarch64-linux-hw-point.c
+++ b/gdb/nat/aarch64-linux-hw-point.c
@@ -111,7 +111,7 @@ aarch64_point_encode_ctrl_reg (enum target_hw_bp_type type, int len)
    Return 0 for any non-compliant ADDR and/or LEN; return 1 otherwise.  */
 
 static int
-aarch64_point_is_aligned (int is_watchpoint, CORE_ADDR addr, int len)
+aarch64_point_is_aligned (int is_watchpoint, CORE_ADDR addr, LONGEST len)
 {
   unsigned int alignment = 0;
 
@@ -180,9 +180,10 @@ aarch64_point_is_aligned (int is_watchpoint, CORE_ADDR addr, int len)
    limitations can be largely relaxed with some further work.  */
 
 static void
-aarch64_align_watchpoint (CORE_ADDR addr, int len, CORE_ADDR *aligned_addr_p,
+aarch64_align_watchpoint (CORE_ADDR addr, LONGEST len,
+			  CORE_ADDR *aligned_addr_p,
 			  int *aligned_len_p, CORE_ADDR *next_addr_p,
-			  int *next_len_p)
+			  LONGEST *next_len_p)
 {
   int aligned_len;
   unsigned int offset;
@@ -501,7 +502,7 @@ aarch64_handle_aligned_watchpoint (enum target_hw_bp_type type,
 
 static int
 aarch64_handle_unaligned_watchpoint (enum target_hw_bp_type type,
-				     CORE_ADDR addr, int len, int is_insert,
+				     CORE_ADDR addr, LONGEST len, int is_insert,
 				     struct aarch64_debug_reg_state *state)
 {
   while (len > 0)
@@ -524,9 +525,9 @@ aarch64_handle_unaligned_watchpoint (enum target_hw_bp_type type,
 		      "                             "
 		      "aligned_addr: %s, aligned_len: %d\n"
 		      "                                "
-		      "next_addr: %s,    next_len: %d\n",
+		      "next_addr: %s,    next_len: %s\n",
 		      is_insert, core_addr_to_string_nz (aligned_addr),
-		      aligned_len, core_addr_to_string_nz (addr), len);
+		      aligned_len, core_addr_to_string_nz (addr), plongest (len));
 
       if (ret != 0)
 	return ret;
@@ -537,7 +538,7 @@ aarch64_handle_unaligned_watchpoint (enum target_hw_bp_type type,
 
 int
 aarch64_handle_watchpoint (enum target_hw_bp_type type, CORE_ADDR addr,
-			   int len, int is_insert,
+			   LONGEST len, int is_insert,
 			   struct aarch64_debug_reg_state *state)
 {
   if (aarch64_point_is_aligned (1 /* is_watchpoint */ , addr, len))
@@ -588,14 +589,14 @@ aarch64_linux_set_debug_regs (const struct aarch64_debug_reg_state *state,
 void
 aarch64_show_debug_reg_state (struct aarch64_debug_reg_state *state,
 			      const char *func, CORE_ADDR addr,
-			      int len, enum target_hw_bp_type type)
+			      LONGEST len, enum target_hw_bp_type type)
 {
   int i;
 
   debug_printf ("%s", func);
   if (addr || len)
-    debug_printf (" (addr=0x%08lx, len=%d, type=%s)",
-		  (unsigned long) addr, len,
+    debug_printf (" (addr=0x%08lx, len=%s, type=%s)",
+		  (unsigned long) addr, plongest (len),
 		  type == hw_write ? "hw-write-watchpoint"
 		  : (type == hw_read ? "hw-read-watchpoint"
 		     : (type == hw_access ? "hw-access-watchpoint"
diff --git a/gdb/nat/aarch64-linux-hw-point.h b/gdb/nat/aarch64-linux-hw-point.h
index 7c42b96d1b..e1d4fc8dbc 100644
--- a/gdb/nat/aarch64-linux-hw-point.h
+++ b/gdb/nat/aarch64-linux-hw-point.h
@@ -172,7 +172,7 @@ int aarch64_handle_breakpoint (enum target_hw_bp_type type, CORE_ADDR addr,
 			       int len, int is_insert,
 			       struct aarch64_debug_reg_state *state);
 int aarch64_handle_watchpoint (enum target_hw_bp_type type, CORE_ADDR addr,
-			       int len, int is_insert,
+			       LONGEST len, int is_insert,
 			       struct aarch64_debug_reg_state *state);
 
 void aarch64_linux_set_debug_regs (const struct aarch64_debug_reg_state *state,
@@ -180,7 +180,7 @@ void aarch64_linux_set_debug_regs (const struct aarch64_debug_reg_state *state,
 
 void aarch64_show_debug_reg_state (struct aarch64_debug_reg_state *state,
 				   const char *func, CORE_ADDR addr,
-				   int len, enum target_hw_bp_type type);
+				   LONGEST len, enum target_hw_bp_type type);
 
 void aarch64_linux_get_debug_reg_capacity (int tid);
 
diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c
index 4a82434c0d..49a27d8daa 100644
--- a/gdb/ppc-linux-nat.c
+++ b/gdb/ppc-linux-nat.c
@@ -1798,11 +1798,11 @@ can_use_watchpoint_cond_accel (void)
    CONDITION_VALUE will hold the value which should be put in the
    DVC register.  */
 static void
-calculate_dvc (CORE_ADDR addr, int len, CORE_ADDR data_value,
+calculate_dvc (CORE_ADDR addr, LONGEST len, CORE_ADDR data_value,
 	       uint32_t *condition_mode, uint64_t *condition_value)
 {
-  int i, num_byte_enable, align_offset, num_bytes_off_dvc,
-      rightmost_enabled_byte;
+  LONGEST i, num_byte_enable;
+  int align_offset, num_bytes_off_dvc, rightmost_enabled_byte;
   CORE_ADDR addr_end_data, addr_end_dvc;
 
   /* The DVC register compares bytes within fixed-length windows which
@@ -1889,7 +1889,7 @@ num_memory_accesses (struct value *v)
    of the constant.  */
 static int
 check_condition (CORE_ADDR watch_addr, struct expression *cond,
-		 CORE_ADDR *data_value, int *len)
+		 CORE_ADDR *data_value, LONGEST *len)
 {
   int pc = 1, num_accesses_left, num_accesses_right;
   struct value *left_val, *right_val, *left_chain, *right_chain;
@@ -1957,7 +1957,7 @@ check_condition (CORE_ADDR watch_addr, struct expression *cond,
    true.  */
 static int
 ppc_linux_can_accel_watchpoint_condition (struct target_ops *self,
-					  CORE_ADDR addr, int len, int rw,
+					  CORE_ADDR addr, LONGEST len, int rw,
 					  struct expression *cond)
 {
   CORE_ADDR data_value;
@@ -1974,7 +1974,7 @@ ppc_linux_can_accel_watchpoint_condition (struct target_ops *self,
 
 static void
 create_watchpoint_request (struct ppc_hw_breakpoint *p, CORE_ADDR addr,
-			   int len, enum target_hw_bp_type type,
+			   LONGEST len, enum target_hw_bp_type type,
 			   struct expression *cond, int insert)
 {
   if (len == 1
@@ -2240,7 +2240,7 @@ ppc_linux_stopped_by_watchpoint (struct target_ops *ops)
 static int
 ppc_linux_watchpoint_addr_within_range (struct target_ops *target,
 					CORE_ADDR addr,
-					CORE_ADDR start, int length)
+					CORE_ADDR start, LONGEST length)
 {
   int mask;
 
diff --git a/gdb/procfs.c b/gdb/procfs.c
index 887f1201fe..edd1be632a 100644
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -1563,7 +1563,7 @@ procfs_address_to_host_pointer (CORE_ADDR addr)
 }
 
 static int
-proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags)
+proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, LONGEST len, int wflags)
 {
   struct {
     procfs_ctl_t cmd;
@@ -3250,7 +3250,7 @@ procfs_pid_to_str (struct target_ops *ops, ptid_t ptid)
 /* Insert a watchpoint.  */
 
 static int
-procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag,
+procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, LONGEST len, int rwflag,
 		       int after)
 {
   int       pflags = 0;
diff --git a/gdb/remote.c b/gdb/remote.c
index 94d5594175..86777f1e5e 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -9897,7 +9897,7 @@ remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len,
   p = strchr (rs->buf, '\0');
   addr = remote_address_masked (addr);
   p += hexnumstr (p, (ULONGEST) addr);
-  xsnprintf (p, endbuf - p, ",%x", len);
+  xsnprintf (p, endbuf - p, ",%s", phex_nz (len, sizeof (len)));
 
   putpkt (rs->buf);
   getpkt (&rs->buf, &rs->buf_size, 0);
@@ -9917,7 +9917,7 @@ remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len,
 
 static int
 remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr,
-				     CORE_ADDR start, int length)
+				     CORE_ADDR start, LONGEST length)
 {
   CORE_ADDR diff = remote_address_masked (addr - start);
 
@@ -9946,7 +9946,7 @@ remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len,
   p = strchr (rs->buf, '\0');
   addr = remote_address_masked (addr);
   p += hexnumstr (p, (ULONGEST) addr);
-  xsnprintf (p, endbuf - p, ",%x", len);
+  xsnprintf (p, endbuf - p, ",%s", phex_nz (len, sizeof (len)));
   putpkt (rs->buf);
   getpkt (&rs->buf, &rs->buf_size, 0);
 
diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index 2b449cbf01..f725215fff 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -733,14 +733,14 @@ debug_stopped_data_address (struct target_ops *self, CORE_ADDR *arg1)
 }
 
 static int
-delegate_watchpoint_addr_within_range (struct target_ops *self, CORE_ADDR arg1, CORE_ADDR arg2, int arg3)
+delegate_watchpoint_addr_within_range (struct target_ops *self, CORE_ADDR arg1, CORE_ADDR arg2, LONGEST arg3)
 {
   self = self->beneath;
   return self->to_watchpoint_addr_within_range (self, arg1, arg2, arg3);
 }
 
 static int
-debug_watchpoint_addr_within_range (struct target_ops *self, CORE_ADDR arg1, CORE_ADDR arg2, int arg3)
+debug_watchpoint_addr_within_range (struct target_ops *self, CORE_ADDR arg1, CORE_ADDR arg2, LONGEST arg3)
 {
   int result;
   fprintf_unfiltered (gdb_stdlog, "-> %s->to_watchpoint_addr_within_range (...)\n", debug_target.to_shortname);
@@ -752,7 +752,7 @@ debug_watchpoint_addr_within_range (struct target_ops *self, CORE_ADDR arg1, COR
   fputs_unfiltered (", ", gdb_stdlog);
   target_debug_print_CORE_ADDR (arg2);
   fputs_unfiltered (", ", gdb_stdlog);
-  target_debug_print_int (arg3);
+  target_debug_print_LONGEST (arg3);
   fputs_unfiltered (") = ", gdb_stdlog);
   target_debug_print_int (result);
   fputs_unfiltered ("\n", gdb_stdlog);
@@ -785,20 +785,20 @@ debug_region_ok_for_hw_watchpoint (struct target_ops *self, CORE_ADDR arg1, LONG
 }
 
 static int
-delegate_can_accel_watchpoint_condition (struct target_ops *self, CORE_ADDR arg1, int arg2, int arg3, struct expression *arg4)
+delegate_can_accel_watchpoint_condition (struct target_ops *self, CORE_ADDR arg1, LONGEST arg2, int arg3, struct expression *arg4)
 {
   self = self->beneath;
   return self->to_can_accel_watchpoint_condition (self, arg1, arg2, arg3, arg4);
 }
 
 static int
-tdefault_can_accel_watchpoint_condition (struct target_ops *self, CORE_ADDR arg1, int arg2, int arg3, struct expression *arg4)
+tdefault_can_accel_watchpoint_condition (struct target_ops *self, CORE_ADDR arg1, LONGEST arg2, int arg3, struct expression *arg4)
 {
   return 0;
 }
 
 static int
-debug_can_accel_watchpoint_condition (struct target_ops *self, CORE_ADDR arg1, int arg2, int arg3, struct expression *arg4)
+debug_can_accel_watchpoint_condition (struct target_ops *self, CORE_ADDR arg1, LONGEST arg2, int arg3, struct expression *arg4)
 {
   int result;
   fprintf_unfiltered (gdb_stdlog, "-> %s->to_can_accel_watchpoint_condition (...)\n", debug_target.to_shortname);
@@ -808,7 +808,7 @@ debug_can_accel_watchpoint_condition (struct target_ops *self, CORE_ADDR arg1, i
   fputs_unfiltered (", ", gdb_stdlog);
   target_debug_print_CORE_ADDR (arg1);
   fputs_unfiltered (", ", gdb_stdlog);
-  target_debug_print_int (arg2);
+  target_debug_print_LONGEST (arg2);
   fputs_unfiltered (", ", gdb_stdlog);
   target_debug_print_int (arg3);
   fputs_unfiltered (", ", gdb_stdlog);
diff --git a/gdb/target.c b/gdb/target.c
index a1ac6d0697..eb0538cb82 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -53,7 +53,7 @@ static void generic_tls_error (void) ATTRIBUTE_NORETURN;
 static void default_terminal_info (struct target_ops *, const char *, int);
 
 static int default_watchpoint_addr_within_range (struct target_ops *,
-						 CORE_ADDR, CORE_ADDR, int);
+						 CORE_ADDR, CORE_ADDR, LONGEST);
 
 static int default_region_ok_for_hw_watchpoint (struct target_ops *,
 						CORE_ADDR, LONGEST);
@@ -3120,7 +3120,7 @@ default_region_ok_for_hw_watchpoint (struct target_ops *self,
 static int
 default_watchpoint_addr_within_range (struct target_ops *target,
 				      CORE_ADDR addr,
-				      CORE_ADDR start, int length)
+				      CORE_ADDR start, LONGEST length)
 {
   return addr >= start && addr < start + length;
 }
diff --git a/gdb/target.h b/gdb/target.h
index 7a70c3f6da..35eee91a83 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -535,7 +535,7 @@ struct target_ops
     int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *)
       TARGET_DEFAULT_RETURN (0);
     int (*to_watchpoint_addr_within_range) (struct target_ops *,
-					    CORE_ADDR, CORE_ADDR, int)
+					    CORE_ADDR, CORE_ADDR, LONGEST)
       TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range);
 
     /* Documentation of this routine is provided with the corresponding
@@ -545,7 +545,7 @@ struct target_ops
       TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint);
 
     int (*to_can_accel_watchpoint_condition) (struct target_ops *,
-					      CORE_ADDR, int, int,
+					      CORE_ADDR, LONGEST, int,
 					      struct expression *)
       TARGET_DEFAULT_RETURN (0);
     int (*to_masked_watch_num_registers) (struct target_ops *,
-- 
2.14.3