Fix gdb 8.1 Solaris/SPARC compilation (PR build/22206)

When testing my Solaris < 10 removal patch on Solaris/SPARC, I found
that gdb mainline is currently broken there due to the recent SPARC M7
ADI patches:

/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:1876:0: error: "PSR_ICC" redefined [-Werror]
 #define PSR_ICC  0x00f00000
 ^
In file included from /usr/include/v7/sys/privregs.h:24:0,
                 from /usr/include/sys/regset.h:420,
                 from /usr/include/sys/ucontext.h:21,
                 from /usr/include/sys/signal.h:231,
                 from /usr/include/sys/procset.h:23,
                 from /usr/include/sys/wait.h:25,
                 from /usr/include/stdlib.h:21,
                 from build-gnulib/import/stdlib.h:36,
                 from /vol/src/gnu/gdb/gdb/local/gdb/common/common-defs.h:53,
                 from /vol/src/gnu/gdb/gdb/local/gdb/defs.h:28,
                 from /vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:20:
/usr/include/v7/sys/psr.h:35:0: note: this is the location of the previous definition
 #define PSR_ICC  0x00F00000 /* integer condition codes */
 ^
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:1878:0: error: "PSR_IMPL" redefined [-Werror]
 #define PSR_IMPL 0xf0000000
 ^
In file included from /usr/include/v7/sys/privregs.h:24:0,
                 from /usr/include/sys/regset.h:420,
                 from /usr/include/sys/ucontext.h:21,
                 from /usr/include/sys/signal.h:231,
                 from /usr/include/sys/procset.h:23,
                 from /usr/include/sys/wait.h:25,
                 from /usr/include/stdlib.h:21,
                 from build-gnulib/import/stdlib.h:36,
                 from /vol/src/gnu/gdb/gdb/local/gdb/common/common-defs.h:53,
                 from /vol/src/gnu/gdb/gdb/local/gdb/defs.h:28,
                 from /vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:20:
/usr/include/v7/sys/psr.h:41:0: note: this is the location of the previous definition
 #define PSR_IMPL 0xF0000000 /* implementation */
 ^

Comparing Solaris 11.4 <v7/sys/psr.h> and sparc64-tdep.c, there are more
inconsistencies:

<v7/sys/psr.h>:

#define	PSR_S		0x00000080	/* supervisor mode */
#define	PSR_ICC		0x00F00000	/* integer condition codes */
#define	PSR_VER		0x0F000000	/* mask version */
#define	PSR_IMPL	0xF0000000	/* implementation */
#define	PSR_RSV		0x000FC000	/* reserved */

sparc64-tdep.c:

#define PSR_S		0x00000080
#define PSR_ICC		0x00f00000
#define PSR_VERS	0x0f000000
#define PSR_IMPL	0xf0000000
#define PSR_V8PLUS	0xff000000
#define PSR_XCC		0x000f0000

Apart from the capitalization differences that trip g++, the names
differ (PSR_VER vs. PSR_VERS), PSR_XCC is included in Solaris' PSR_RSV,
and there's no PSR_V8PLUS on Solaris either.

/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c: In function `int adi_tag_fd()':
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:296:63: error: format `%d' expects argument of type `int', but argument 4 has type `pid_t {aka long int}' [-Werror=format=]
   snprintf (cl_name, sizeof(cl_name), "/proc/%d/adi/tags", pid);
                                                               ^
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c: In function `bool adi_is_addr_mapped(CORE_ADDR, std::size_t)':
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:314:64: error: format `%d' expects argument of type `int', but argument 4 has type `pid_t {aka long int}' [-Werror=format=]
   snprintf (filename, sizeof filename, "/proc/%d/adi/maps", pid);
                                                                ^

You cannot always print a pid_t, which can be either int or long on
Solaris, as an int.

Obviously, the ADI patch which modifies code shared between all SPARC
targets, hasn't been tested on anything but Linux/SPARC.

The patch below includes the minimal fixes necessary to unbreak the
Solaris/SPARC build.

However, as detailed in the PR, there's more breakage here: apart from
not bothering to implement ADI support on Solaris, the code contains
several more changes to shared/common SPARC code that are simply wrong
on anything but Linux/SPARC.

The patch was tested on sparcv9-sun-solaris2.10 and
sparcv9-sun-solaris2.11.4 (build and gdb/gdb gdb/gdb smoke test only).

	PR build/22206
	* sparc64-tdep.c (adi_tag_fd): Print pid as long.
	(adi_is_addr_mapped): Likewise.
	(PSR_ICC): Don't redefine.
	(PSR_IMPL): Likewise.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0b9aea224d068ebc2f684392b940aac014d2bdfa..89c960a32d82f285c59de9f218903a58b75619ed 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,11 @@
+2017-09-26  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+       PR build/22206
+       * sparc64-tdep.c (adi_tag_fd): Print pid as long.
+       (adi_is_addr_mapped): Likewise.
+       (PSR_ICC): Don't redefine.
+       (PSR_IMPL): Likewise.
+
 2017-09-25  Tom Tromey  <tom@tromey.com>
 
        * regcache.c (regcache::dump): Use string_printf.

diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c
index bd7f45f773dc2eb1d9f9d4ea06715f0972c6c718..a5ca434c289d82ba211f16928c1c4e262b7eda6d 100644 (file)
--- a/gdb/sparc64-tdep.c
+++ b/gdb/sparc64-tdep.c
@@ -293,7 +293,7 @@ adi_tag_fd (void)
     return proc->stat.tag_fd;
 
   char cl_name[MAX_PROC_NAME_SIZE];
-  snprintf (cl_name, sizeof(cl_name), "/proc/%d/adi/tags", pid);
+  snprintf (cl_name, sizeof(cl_name), "/proc/%ld/adi/tags", (long) pid);
   int target_errno;
   proc->stat.tag_fd = target_fileio_open (NULL, cl_name, O_RDWR|O_EXCL, 
                                           0, &target_errno);
@@ -311,7 +311,7 @@ adi_is_addr_mapped (CORE_ADDR vaddr, size_t cnt)
   size_t i = 0;
 
   pid_t pid = ptid_get_pid (inferior_ptid);
-  snprintf (filename, sizeof filename, "/proc/%d/adi/maps", pid);
+  snprintf (filename, sizeof filename, "/proc/%ld/adi/maps", (long) pid);
   char *data = target_fileio_read_stralloc (NULL, filename);
   if (data)
     {
@@ -1873,9 +1873,13 @@ sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 #define TSTATE_XCC     0x000000f000000000ULL
 
 #define PSR_S          0x00000080
+#ifndef PSR_ICC
 #define PSR_ICC                0x00f00000
+#endif
 #define PSR_VERS       0x0f000000
+#ifndef PSR_IMPL
 #define PSR_IMPL       0xf0000000
+#endif
 #define PSR_V8PLUS     0xff000000
 #define PSR_XCC                0x000f0000