diff options
Diffstat (limited to 'gdb/ppc-linux-nat.c')
| -rw-r--r-- | gdb/ppc-linux-nat.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c index ed197f1..2e04828 100644 --- a/gdb/ppc-linux-nat.c +++ b/gdb/ppc-linux-nat.c @@ -56,9 +56,16 @@ #define PT_TRAP 40 #endif +/* The PPC_FEATURE_* defines should be provided by <asm/cputable.h>. + If they aren't, we can provide them ourselves (their values are fixed + because they are part of the kernel ABI). They are used in the AT_HWCAP + entry of the AUXV. */ #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 */ +#endif /* Glibc's headers don't define PTRACE_GETVRREGS so we cannot use a configure time check. Some older glibc's (for instance 2.2.1) @@ -274,11 +281,17 @@ ppc_register_u_addr (struct gdbarch *gdbarch, int regno) kernel headers incorrectly contained the 32-bit definition of PT_FPSCR. For the 32-bit definition, floating-point registers occupy two 32-bit "slots", and the FPSCR lives in - the secondhalf of such a slot-pair (hence +1). For 64-bit, + the second half of such a slot-pair (hence +1). For 64-bit, the FPSCR instead occupies the full 64-bit 2-word-slot and hence no adjustment is necessary. Hack around this. */ if (wordsize == 8 && PT_FPSCR == (48 + 32 + 1)) u_addr = (48 + 32) * wordsize; + /* If the FPSCR is 64-bit wide, we need to fetch the whole 64-bit + slot and not just its second word. The PT_FPSCR supplied when + GDB is compiled as a 32-bit app doesn't reflect this. */ + else if (wordsize == 4 && register_size (gdbarch, regno) == 8 + && PT_FPSCR == (48 + 2*32 + 1)) + u_addr = (48 + 2*32) * wordsize; else u_addr = PT_FPSCR * wordsize; } @@ -1230,6 +1243,7 @@ ppc_linux_read_description (struct target_ops *ops) { int altivec = 0; int vsx = 0; + int isa205 = 0; int tid = TIDGET (inferior_ptid); if (tid == 0) @@ -1274,6 +1288,9 @@ 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) + isa205 = 1; + /* Check for 64-bit inferior process. This is the case when the host is 64-bit, and in addition the top bit of the MSR register is set. */ #ifdef __powerpc64__ @@ -1284,21 +1301,21 @@ ppc_linux_read_description (struct target_ops *ops) if (errno == 0 && msr < 0) { if (vsx) - return tdesc_powerpc_vsx64l; + return isa205? tdesc_powerpc_isa205_vsx64l : tdesc_powerpc_vsx64l; else if (altivec) - return tdesc_powerpc_altivec64l; + return isa205? tdesc_powerpc_isa205_altivec64l : tdesc_powerpc_altivec64l; - return tdesc_powerpc_64l; + return isa205? tdesc_powerpc_isa205_64l : tdesc_powerpc_64l; } } #endif if (vsx) - return tdesc_powerpc_vsx32l; + return isa205? tdesc_powerpc_isa205_vsx32l : tdesc_powerpc_vsx32l; else if (altivec) - return tdesc_powerpc_altivec32l; + return isa205? tdesc_powerpc_isa205_altivec32l : tdesc_powerpc_altivec32l; - return tdesc_powerpc_32l; + return isa205? tdesc_powerpc_isa205_32l : tdesc_powerpc_32l; } void _initialize_ppc_linux_nat (void); |