diff options
| author | Yao Qi <yao.qi@linaro.org> | 2015-06-01 12:13:02 +0100 |
|---|---|---|
| committer | Yao Qi <yao.qi@linaro.org> | 2015-06-01 12:13:02 +0100 |
| commit | bd16da5114e2f04772bf05604a608fbe006a485a (patch) | |
| tree | 5924d912295499b2e06ca1d9c1ef261e367166af /gdb/arm-linux-nat.c | |
| parent | df9d7ec9e749c18e9970fb240ca142148dd3bea9 (diff) | |
Fetch and store VFP registers by PTRACE_{G,S}ETREGSET
This patch is to use PTRACE_{G,S}ETREGSET to fetch and store VFP
registers if kernel supports.
gdb:
2015-06-01 Yao Qi <yao.qi@linaro.org>
* arm-linux-nat.c (fetch_vfp_regs): Use PTRACE_GETREGSET.
(store_vfp_regs): Use PTRACE_SETREGSET.
Diffstat (limited to 'gdb/arm-linux-nat.c')
| -rw-r--r-- | gdb/arm-linux-nat.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/gdb/arm-linux-nat.c b/gdb/arm-linux-nat.c index 2336845303..b18d443721 100644 --- a/gdb/arm-linux-nat.c +++ b/gdb/arm-linux-nat.c @@ -591,7 +591,17 @@ fetch_vfp_regs (struct regcache *regcache) /* Get the thread id for the ptrace call. */ tid = GET_THREAD_ID (inferior_ptid); - ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf); + if (have_ptrace_getregset) + { + struct iovec iov; + + iov.iov_base = regbuf; + iov.iov_len = VFP_REGS_SIZE; + ret = ptrace (PTRACE_GETREGSET, tid, NT_ARM_VFP, &iov); + } + else + ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf); + if (ret < 0) { warning (_("Unable to fetch VFP registers.")); @@ -617,7 +627,17 @@ store_vfp_regs (const struct regcache *regcache) /* Get the thread id for the ptrace call. */ tid = GET_THREAD_ID (inferior_ptid); - ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf); + if (have_ptrace_getregset) + { + struct iovec iov; + + iov.iov_base = regbuf; + iov.iov_len = VFP_REGS_SIZE; + ret = ptrace (PTRACE_GETREGSET, tid, NT_ARM_VFP, &iov); + } + else + ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf); + if (ret < 0) { warning (_("Unable to fetch VFP registers (for update).")); @@ -631,7 +651,16 @@ store_vfp_regs (const struct regcache *regcache) regcache_raw_collect (regcache, ARM_FPSCR_REGNUM, (char *) regbuf + 32 * 8); - ret = ptrace (PTRACE_SETVFPREGS, tid, 0, regbuf); + if (have_ptrace_getregset) + { + struct iovec iov; + + iov.iov_base = regbuf; + iov.iov_len = VFP_REGS_SIZE; + ret = ptrace (PTRACE_SETREGSET, tid, NT_ARM_VFP, &iov); + } + else + ret = ptrace (PTRACE_SETVFPREGS, tid, 0, regbuf); if (ret < 0) { |