diff options
Diffstat (limited to 'gdb/ppc-linux-nat.c')
| -rw-r--r-- | gdb/ppc-linux-nat.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c index 034201b5f16..b7e70d17c12 100644 --- a/gdb/ppc-linux-nat.c +++ b/gdb/ppc-linux-nat.c @@ -63,8 +63,8 @@ #ifndef PPC_FEATURE_BOOKE #define PPC_FEATURE_BOOKE 0x00008000 #endif -#ifndef PPC_FEATURE_ARCH_2_05 -#define PPC_FEATURE_ARCH_2_05 0x00001000 /* ISA 2.05 */ +#ifndef PPC_FEATURE_HAS_DFP +#define PPC_FEATURE_HAS_DFP 0x00000400 /* Decimal Floating Point. */ #endif /* Glibc's headers don't define PTRACE_GETVRREGS so we cannot use a @@ -1290,7 +1290,13 @@ ppc_linux_read_description (struct target_ops *ops) perror_with_name (_("Unable to fetch AltiVec registers")); } - if (ppc_linux_get_hwcap () & PPC_FEATURE_ARCH_2_05) + /* Power ISA 2.05 (implemented by Power 6 and newer processors) increases + the FPSCR from 32 bits to 64 bits. Even though Power 7 supports this + ISA version, it doesn't have PPC_FEATURE_ARCH_2_05 set, only + PPC_FEATURE_ARCH_2_06. Since for now the only bits used in the higher + half of the register are for Decimal Floating Point, we check if that + feature is available to decide the size of the FPSCR. */ + if (ppc_linux_get_hwcap () & PPC_FEATURE_HAS_DFP) isa205 = 1; /* Check for 64-bit inferior process. This is the case when the host is |