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| author | Jim Blandy <jimb@codesourcery.com> | 2004-03-26 20:59:38 +0000 |
|---|---|---|
| committer | Jim Blandy <jimb@codesourcery.com> | 2004-03-26 20:59:38 +0000 |
| commit | 2922faeecf5bc41555a2527ff77a6377217a17ee (patch) | |
| tree | d268d982a719fcb9ccd002793030a36ac93f9961 /gdb/ppc-linux-tdep.c | |
| parent | 8b043c2b880be7f8047509dd49cf53a849c5fb83 (diff) | |
| download | gdb-2922faeecf5bc41555a2527ff77a6377217a17ee.tar.gz | |
* ppc-linux-tdep.c (ppc_linux_init_abi): Long doubles are eight
bytes long on PPC GNU/Linux.
Diffstat (limited to 'gdb/ppc-linux-tdep.c')
| -rw-r--r-- | gdb/ppc-linux-tdep.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c index ba2733ee717..c2223d29fc3 100644 --- a/gdb/ppc-linux-tdep.c +++ b/gdb/ppc-linux-tdep.c @@ -1076,6 +1076,15 @@ ppc_linux_init_abi (struct gdbarch_info info, if (tdep->wordsize == 4) { + /* NOTE: jimb/2004-03-26: The System V ABI PowerPC Processor + Supplement says that long doubles are sixteen bytes long. + However, as one of the known warts of its ABI, PPC GNU/Linux + uses eight-byte long doubles. GCC only recently got 128-bit + long double support on PPC, so it may be changing soon. The + Linux Standards Base says that programs that use 'long + double' on PPC GNU/Linux are non-conformant. */ + set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); + /* Until November 2001, gcc did not comply with the 32 bit SysV R4 ABI requirement that structures less than or equal to 8 bytes should be returned in registers. Instead GCC was using |