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Re: [PATCH] Fix riscv-linux native gdb build failure.
- From: Andrew Burgess <andrew dot burgess at embecosm dot com>
- To: Jim Wilson <jimw at sifive dot com>
- Cc: gdb-patches at sourceware dot org
- Date: Wed, 29 Aug 2018 11:44:01 +0100
- Subject: Re: [PATCH] Fix riscv-linux native gdb build failure.
- References: <20180828230440.485-1-jimw@sifive.com>
* Jim Wilson <jimw@sifive.com> [2018-08-28 16:04:40 -0700]:
> The linux kernel uses NT_PRFPREG. Glibc before BZ 14890 defines NT_FPREGSET.
> After it defines both. Avoid glibc version dependency by using the gdb header
> file instead of the glibc header file, and the macro name that gdb defines
> which is NT_FPREGSET.
>
> Tested with riscv-linux make and make check with no regressions. OK to
> commit?
>
> Jim
>
> gdb/
> * riscv-linux-nat.c: Include elf/common.h instead of elf.h.
> (riscv_linux_nat_target::fetch_registers): Use NT_FPREGSET instead
> of NT_PRFPREG.
> (riscv_linux_nat_target::store_registers): Likewise.
Looks good to me.
Thanks,
Andrew
> ---
> gdb/riscv-linux-nat.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/gdb/riscv-linux-nat.c b/gdb/riscv-linux-nat.c
> index 3faa9f9c1f..7dbfe651f2 100644
> --- a/gdb/riscv-linux-nat.c
> +++ b/gdb/riscv-linux-nat.c
> @@ -20,9 +20,10 @@
> #include "regcache.h"
> #include "gregset.h"
> #include "linux-nat.h"
> -#include "elf.h"
> #include "riscv-tdep.h"
>
> +#include "elf/common.h"
> +
> #include <sys/ptrace.h>
>
> /* RISC-V Linux native additions to the default linux support. */
> @@ -191,7 +192,7 @@ riscv_linux_nat_target::fetch_registers (struct regcache *regcache, int regnum)
> iov.iov_base = ®s;
> iov.iov_len = sizeof (regs);
>
> - if (ptrace (PTRACE_GETREGSET, tid, NT_PRFPREG,
> + if (ptrace (PTRACE_GETREGSET, tid, NT_FPREGSET,
> (PTRACE_TYPE_ARG3) &iov) == -1)
> perror_with_name (_("Couldn't get registers"));
> else
> @@ -252,14 +253,14 @@ riscv_linux_nat_target::store_registers (struct regcache *regcache, int regnum)
> iov.iov_base = ®s;
> iov.iov_len = sizeof (regs);
>
> - if (ptrace (PTRACE_GETREGSET, tid, NT_PRFPREG,
> + if (ptrace (PTRACE_GETREGSET, tid, NT_FPREGSET,
> (PTRACE_TYPE_ARG3) &iov) == -1)
> perror_with_name (_("Couldn't get registers"));
> else
> {
> fill_fpregset (regcache, ®s, regnum);
>
> - if (ptrace (PTRACE_SETREGSET, tid, NT_PRFPREG,
> + if (ptrace (PTRACE_SETREGSET, tid, NT_FPREGSET,
> (PTRACE_TYPE_ARG3) &iov) == -1)
> perror_with_name (_("Couldn't set registers"));
> }
> --
> 2.17.1
>