diff options
Diffstat (limited to 'gdb/arm-linux-nat.c')
| -rw-r--r-- | gdb/arm-linux-nat.c | 27 |
1 files changed, 10 insertions, 17 deletions
diff --git a/gdb/arm-linux-nat.c b/gdb/arm-linux-nat.c index a1ad6fe01ed..fe8a113a270 100644 --- a/gdb/arm-linux-nat.c +++ b/gdb/arm-linux-nat.c @@ -555,29 +555,22 @@ arm_linux_nat_target::read_description () if (arm_hwcap & HWCAP_VFP) { - int pid; - char *buf; - const struct target_desc * result = NULL; + /* Make sure that the kernel supports reading VFP registers. Support was + added in 2.6.30. */ + int pid = inferior_ptid.lwp (); + errno = 0; + char *buf = (char *) alloca (ARM_VFP3_REGS_SIZE); + if (ptrace (PTRACE_GETVFPREGS, pid, 0, buf) < 0 && errno == EIO) + return nullptr; /* NEON implies VFPv3-D32 or no-VFP unit. Say that we only support Neon with VFPv3-D32. */ if (arm_hwcap & HWCAP_NEON) - result = tdesc_arm_with_neon; + return tdesc_arm_with_neon; else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPv3D16)) == HWCAP_VFPv3) - result = tdesc_arm_with_vfpv3; + return tdesc_arm_with_vfpv3; else - result = tdesc_arm_with_vfpv2; - - /* Now make sure that the kernel supports reading these - registers. Support was added in 2.6.30. */ - pid = inferior_ptid.lwp (); - errno = 0; - buf = (char *) alloca (ARM_VFP3_REGS_SIZE); - if (ptrace (PTRACE_GETVFPREGS, pid, 0, buf) < 0 - && errno == EIO) - result = NULL; - - return result; + return tdesc_arm_with_vfpv2; } return this->beneath ()->read_description (); |