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authorDaniel Jacobowitz <drow@false.org>2006-03-15 16:37:52 +0000
committerDaniel Jacobowitz <drow@false.org>2006-03-15 16:37:52 +0000
commitd05f682671b41368ad31d683d32571dd672fefda (patch)
tree8430508a49b81e59dfd54c2109113693e37e8b1d
parent3e5af19ed9851916142fe98cc9c5d79c2c4f8302 (diff)
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* mips-linux-tdep.c: Include "floatformat.h".
(mips_linux_init_abi): Use 128-bit long double for N32 and N64. (mips_n32n64_return_value): Support 128-bit long double. (print_gp_register_row): Don't print spaces before ignored or floating point registers.
-rw-r--r--gdb/ChangeLog8
-rw-r--r--gdb/Makefile.in2
-rw-r--r--gdb/mips-linux-tdep.c19
-rw-r--r--gdb/mips-tdep.c27
4 files changed, 53 insertions, 3 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e327c5f..f1e678a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,13 @@
2006-03-15 Daniel Jacobowitz <dan@codesourcery.com>
+ * mips-linux-tdep.c: Include "floatformat.h".
+ (mips_linux_init_abi): Use 128-bit long double for N32 and N64.
+ (mips_n32n64_return_value): Support 128-bit long double.
+ (print_gp_register_row): Don't print spaces before ignored
+ or floating point registers.
+
+2006-03-15 Daniel Jacobowitz <dan@codesourcery.com>
+
* mips-mdebug-tdep.c (compare_pdr_entries): Use bfd_get_signed_32
for code addresses.
(non_heuristic_proc_desc): Likewise.
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 74bdf0b..45139fb 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -2299,7 +2299,7 @@ mips-linux-nat.o: mips-linux-nat.c $(defs_h) $(mips_tdep_h) $(target_h) \
mips-linux-tdep.o: mips-linux-tdep.c $(defs_h) $(gdbcore_h) $(target_h) \
$(solib_svr4_h) $(osabi_h) $(mips_tdep_h) $(gdb_string_h) \
$(gdb_assert_h) $(frame_h) $(regcache_h) $(trad_frame_h) \
- $(tramp_frame_h)
+ $(tramp_frame_h) $(floatformat_h)
mips-mdebug-tdep.o: mips-mdebug-tdep.c $(defs_h) $(frame_h) $(mips_tdep_h) \
$(trad_frame_h) $(block_h) $(symtab_h) $(objfiles_h) $(elf_mips_h) \
$(elf_bfd_h) $(gdb_assert_h) $(frame_unwind_h) $(frame_base_h) \
diff --git a/gdb/mips-linux-tdep.c b/gdb/mips-linux-tdep.c
index 021edc7..f2a941c 100644
--- a/gdb/mips-linux-tdep.c
+++ b/gdb/mips-linux-tdep.c
@@ -32,6 +32,7 @@
#include "regcache.h"
#include "trad-frame.h"
#include "tramp-frame.h"
+#include "floatformat.h"
/* Copied from <asm/elf.h>. */
#define ELF_NGREG 45
@@ -1110,6 +1111,15 @@ mips_linux_init_abi (struct gdbarch_info info,
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
set_mips_linux_register_addr (gdbarch, mips64_linux_register_addr);
+ set_gdbarch_long_double_bit (gdbarch, 128);
+ /* These floatformats should probably be renamed. MIPS uses
+ the same 128-bit IEEE floating point format that IA-64 uses,
+ except that the quiet/signalling NaN bit is reversed (GDB
+ does not distinguish between quiet and signalling NaNs). */
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+ set_gdbarch_long_double_format (gdbarch, &floatformat_ia64_quad_big);
+ else
+ set_gdbarch_long_double_format (gdbarch, &floatformat_ia64_quad_little);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n32_rt_sigframe);
break;
case MIPS_ABI_N64:
@@ -1118,6 +1128,15 @@ mips_linux_init_abi (struct gdbarch_info info,
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_lp64_fetch_link_map_offsets);
set_mips_linux_register_addr (gdbarch, mips64_linux_register_addr);
+ set_gdbarch_long_double_bit (gdbarch, 128);
+ /* These floatformats should probably be renamed. MIPS uses
+ the same 128-bit IEEE floating point format that IA-64 uses,
+ except that the quiet/signalling NaN bit is reversed (GDB
+ does not distinguish between quiet and signalling NaNs). */
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+ set_gdbarch_long_double_format (gdbarch, &floatformat_ia64_quad_big);
+ else
+ set_gdbarch_long_double_format (gdbarch, &floatformat_ia64_quad_little);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n64_rt_sigframe);
break;
default:
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index 679dd9d..9b3935f 100644
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -1,7 +1,7 @@
/* Target-dependent code for the MIPS architecture, for GDB, the GNU Debugger.
Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
Free Software Foundation, Inc.
Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
@@ -2911,6 +2911,24 @@ mips_n32n64_return_value (struct gdbarch *gdbarch,
|| TYPE_LENGTH (type) > 2 * mips_abi_regsize (gdbarch))
return RETURN_VALUE_STRUCT_CONVENTION;
else if (TYPE_CODE (type) == TYPE_CODE_FLT
+ && TYPE_LENGTH (type) == 16
+ && tdep->mips_fpu_type != MIPS_FPU_NONE)
+ {
+ /* A 128-bit floating-point value fills both $f0 and $f2. The
+ two registers are used in the same as memory order, so the
+ eight bytes with the lower memory address are in $f0. */
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stderr, "Return float in $f0 and $f2\n");
+ mips_xfer_register (regcache,
+ NUM_REGS + mips_regnum (current_gdbarch)->fp0,
+ 8, TARGET_BYTE_ORDER, readbuf, writebuf, 0);
+ mips_xfer_register (regcache,
+ NUM_REGS + mips_regnum (current_gdbarch)->fp0 + 2,
+ 8, TARGET_BYTE_ORDER, readbuf ? readbuf + 8 : readbuf,
+ writebuf ? writebuf + 8 : writebuf, 0);
+ return RETURN_VALUE_REGISTER_CONVENTION;
+ }
+ else if (TYPE_CODE (type) == TYPE_CODE_FLT
&& tdep->mips_fpu_type != MIPS_FPU_NONE)
{
/* A floating-point value belongs in the least significant part
@@ -4037,7 +4055,6 @@ print_gp_register_row (struct ui_file *file, struct frame_info *frame,
int regnum;
/* For GP registers, we print a separate row of names above the vals */
- fprintf_filtered (file, " ");
for (col = 0, regnum = start_regnum;
col < ncols && regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
{
@@ -4046,11 +4063,17 @@ print_gp_register_row (struct ui_file *file, struct frame_info *frame,
if (TYPE_CODE (gdbarch_register_type (gdbarch, regnum)) ==
TYPE_CODE_FLT)
break; /* end the row: reached FP register */
+ if (col == 0)
+ fprintf_filtered (file, " ");
fprintf_filtered (file,
mips_abi_regsize (current_gdbarch) == 8 ? "%17s" : "%9s",
REGISTER_NAME (regnum));
col++;
}
+
+ if (col == 0)
+ return regnum;
+
/* print the R0 to R31 names */
if ((start_regnum % NUM_REGS) < MIPS_NUMREGS)
fprintf_filtered (file, "\n R%-4d", start_regnum % NUM_REGS);