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[RFA] Sparc/Linux fixes part 1
- From: "David S. Miller" <davem at redhat dot com>
- To: gdb-patches at sources dot redhat dot com
- Date: Fri, 19 Apr 2002 14:46:00 -0700 (PDT)
- Subject: [RFA] Sparc/Linux fixes part 1
Ok, let's try to split up these changes even more in hopes
someone might be able to start to look at least at the obvious
bits.
32-bit Sparc under Linux does not have a 16-byte long double,
this causes testsuite failures. Fix this by providing a
SPARC_TARGET_LONG_DOUBLE_BYTES the OS specific target headers
can override.
Tested on sparc-linux-gnu, no regressions, a few new successes
:-)
2002-04-19 David S. Miller <davem@redhat.com>
* config/sparc/tm-sparc.h (SPARC_TARGET_LONG_DOUBLE_BYTES): New.
(TARGET_LONG_DOUBLE_BIT): Define in non-multi-arch case.
* config/sparc/tm-linux.h (SPARC_TARGET_LONG_DOUBLE_BYTES):
Override.
* config/sparc/tm-sp64linux.h (SPARC_TARGET_LONG_DOUBLE_BYTES):
Override.
* sparc-tdep.c (sparc_gdbarch_init): Use
SPARC_TARGET_LONG_DOUBLE_BYTES in set_gdbarch_long_double_bit
call. Do it after GDB_TARGET_IS_SPARC64 has stabilized.
--- ./config/sparc/tm-sparc.h.~1~ Mon Jan 28 20:42:44 2002
+++ ./config/sparc/tm-sparc.h Fri Apr 19 13:55:48 2002
@@ -137,6 +137,8 @@ extern int sparc_intreg_size (void);
#endif
#endif
+#define SPARC_TARGET_LONG_DOUBLE_BYTES 16
+
#if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0)
/*
* The following defines must go away for MULTI_ARCH
@@ -175,6 +177,11 @@ extern int sparc_intreg_size (void);
real way to know how big a register is. */
#define REGISTER_SIZE 4
+
+/* Say how large a 'long double' is. */
+
+#define TARGET_LONG_DOUBLE_BIT \
+ (SPARC_TARGET_LONG_DOUBLE_BYTES * TARGET_CHAR_BIT)
/* Number of machine registers */
--- ./config/sparc/tm-linux.h.~1~ Sun Feb 24 14:56:07 2002
+++ ./config/sparc/tm-linux.h Fri Apr 19 13:58:11 2002
@@ -25,6 +25,9 @@
#include "sparc/tm-sparc.h"
+#undef SPARC_TARGET_LONG_DOUBLE_BYTES
+#define SPARC_TARGET_LONG_DOUBLE_BYTES 8
+
#define SIGCONTEXT_PC_OFFSET 12
#include "tm-linux.h"
--- ./config/sparc/tm-sp64linux.h.~1~ Sun Feb 24 14:56:07 2002
+++ ./config/sparc/tm-sp64linux.h Fri Apr 19 13:58:03 2002
@@ -25,6 +25,10 @@ Foundation, Inc., 59 Temple Place - Suit
#include "sparc/tm-sp64.h"
+#undef SPARC_TARGET_LONG_DOUBLE_BYTES
+#define SPARC_TARGET_LONG_DOUBLE_BYTES \
+ (GDB_TARGET_IS_SPARC64 ? 16 : 8)
+
#define SIGCONTEXT_PC_OFFSET 16 /* See asm-sparc64/sigcontext.h */
/* We always want full V9 + Ultra VIS stuff... */
--- ./sparc-tdep.c.~1~ Fri Apr 12 11:18:57 2002
+++ ./sparc-tdep.c Fri Apr 19 13:57:40 2002
@@ -2970,7 +2970,6 @@ sparc_gdbarch_init (struct gdbarch_info
set_gdbarch_init_extra_frame_info (gdbarch, sparc_init_extra_frame_info);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT);
set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_max_register_raw_size (gdbarch, 8);
set_gdbarch_max_register_virtual_size (gdbarch, 8);
@@ -3114,6 +3113,11 @@ sparc_gdbarch_init (struct gdbarch_info
tdep->call_dummy_call_offset = 148 + 4 * 5;
break;
}
+
+ /* Set this after GDB_TARGET_IS_SPARC64 has stabilized. */
+ set_gdbarch_long_double_bit (gdbarch,
+ SPARC_TARGET_LONG_DOUBLE_BYTES
+ * TARGET_CHAR_BIT);
/*
* Settings that vary per-architecture: