Replace -1 with TARGET_XFER_E_IO

Hi,
This patch replaces -1 with TARGET_XFER_E_IO in the implementations of
to_xfer_partial and their callees.  This change is quite mechanical,
and makes the next patch shorter.

gdb:

2014-02-07  Yao Qi  <yao@codesourcery.com>

	* auxv.c (procfs_xfer_auxv): Replace -1 with TARGET_XFER_E_IO.
	(ld_so_xfer_auxv): Likewise.
	* bfd-target.c (target_bfd_xfer_partial): Likewise.
	* bsd-kvm.c (bsd_kvm_xfer_partial): Likewise.
	* corelow.c (core_xfer_partial): Likewise.
	* ctf.c (ctf_xfer_partial): Likewise.
	* darwin-nat.c (darwin_read_dyld_info): Likewise.
	(darwin_xfer_partial): Likewise.
	* exec.c (exec_xfer_partial): Likewise.
	* gnu-nat.c (gnu_xfer_partial): Likewise.
	* ia64-hpux-nat.c (ia64_hpux_xfer_uregs): Likewise.
	* inf-ptrace.c (inf_ptrace_xfer_partial): Likewise.
	* inf-ttrace.c (inf_ttrace_xfer_partial): Likewise.
	* linux-nat.c (linux_xfer_siginfo): Likewise.
	(linux_proc_xfer_spu): Likewise.
	* procfs.c (procfs_xfer_partial): Likewise.
	* record-full.c (record_full_xfer_partial): Likewise.
	(record_full_core_xfer_partial): Likewise.
	* remote-sim.c (gdbsim_xfer_partial): Likewise.
	* remote.c (remote_write_qxfer): Likewise.
	(remote_write_qxfer, remote_read_qxfer): Likewise.
	(remote_xfer_partial): Likewise.
	* rs6000-nat.c (rs6000_xfer_partial): Likewise.
	(rs6000_xfer_shared_libraries): Likewise.
	* sparc-nat.c (sparc_xfer_wcookie): Likewise.
	* spu-linux-nat.c (spu_proc_xfer_spu): Likewise.
	(spu_xfer_partial): Likewise.
	* target.c (memory_xfer_partial_1): Likewise.
	* tracepoint.c (tfile_xfer_partial): Likewise.
	* windows-nat.c (windows_xfer_shared_libraries): Likewise.
	(windows_xfer_partial): Likewise.

1 files changed, 7 insertions, 7 deletions

diff --git a/gdb/auxv.c b/gdb/auxv.c
index dd13237..f93c7ec 100644
--- a/gdb/auxv.c
+++ b/gdb/auxv.c
@@ -52,7 +52,7 @@ procfs_xfer_auxv (gdb_byte *readbuf,
   fd = gdb_open_cloexec (pathname, writebuf != NULL ? O_WRONLY : O_RDONLY, 0);
   xfree (pathname);
   if (fd < 0)
-    return -1;
+    return TARGET_XFER_E_IO;
 
   if (offset != (ULONGEST) 0
       && lseek (fd, (off_t) offset, SEEK_SET) != (off_t) offset)
@@ -86,10 +86,10 @@ ld_so_xfer_auxv (gdb_byte *readbuf,
 
   msym = lookup_minimal_symbol ("_dl_auxv", NULL, NULL);
   if (msym == NULL)
-    return -1;
+    return TARGET_XFER_E_IO;
 
   if (MSYMBOL_SIZE (msym) != ptr_size)
-    return -1;
+    return TARGET_XFER_E_IO;
 
   /* POINTER_ADDRESS is a location where the `_dl_auxv' variable
      resides.  DATA_ADDRESS is the inferior value present in
@@ -118,14 +118,14 @@ ld_so_xfer_auxv (gdb_byte *readbuf,
      11440.  */
 
   if (target_read_memory (pointer_address, ptr_buf, ptr_size) != 0)
-    return -1;
+    return TARGET_XFER_E_IO;
 
   data_address = extract_typed_address (ptr_buf, ptr_type);
 
   /* Possibly still not initialized such as during an inferior
      startup.  */
   if (data_address == 0)
-    return -1;
+    return TARGET_XFER_E_IO;
 
   data_address += offset;
 
@@ -134,7 +134,7 @@ ld_so_xfer_auxv (gdb_byte *readbuf,
       if (target_write_memory (data_address, writebuf, len) == 0)
 	return len;
       else
-	return -1;
+	return TARGET_XFER_E_IO;
     }
 
   /* Stop if trying to read past the existing AUXV block.  The final
@@ -144,7 +144,7 @@ ld_so_xfer_auxv (gdb_byte *readbuf,
     {
       if (target_read_memory (data_address - auxv_pair_size, ptr_buf,
 			      ptr_size) != 0)
-	return -1;
+	return TARGET_XFER_E_IO;
 
       if (extract_typed_address (ptr_buf, ptr_type) == AT_NULL)
 	return 0;