[Buildroot] [PATCH for-next 1/2] package/gdb: enable gdbserver support for riscv

Alistair Francis alistair23 at gmail.com
Sun Jun 6 22:53:10 UTC 2021


On Mon, Jun 7, 2021 at 1:04 AM Romain Naour <romain.naour at gmail.com> wrote:
>
> It turn out that gdbserver support for riscv is available since 10.1 release, since commit [1]
>
> When BR2_PACKAGE_HOST_GDB_ARCH_SUPPORTS is not enabled, gdb will use the stable version (9.x)
> where gdbserver for riscv is not available.
>
> When BR2_PACKAGE_HOST_GDB_ARCH_SUPPORTS enabled, only allow gdb 10.1 in version choice and
> allow enabling gdbserver for the target.
>
> [1] https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=bf84f7066626c78884436e1c39fb60f04c665f21
>
> Signed-off-by: Romain Naour <romain.naour at gmail.com>

Reviewed-by: Alistair Francis <alistair.francis at wdc.com>

Alistair

> ---
> git tag --contains bf84f7066626c78884436e1c39fb60f04c665f21
> returns gdb-10.1-release tag as the oldest containing this commit.
> ---
>  package/gdb/Config.in      | 6 +++---
>  package/gdb/Config.in.host | 3 ++-
>  2 files changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/package/gdb/Config.in b/package/gdb/Config.in
> index 262740fc4c..68a24e0b36 100644
> --- a/package/gdb/Config.in
> +++ b/package/gdb/Config.in
> @@ -19,8 +19,8 @@ config BR2_PACKAGE_GDB
>         depends on BR2_PACKAGE_GDB_ARCH_SUPPORTS
>         depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
>         depends on BR2_INSTALL_LIBSTDCPP
> -       # no gdbserver on riscv
> -       select BR2_PACKAGE_GDB_DEBUGGER if BR2_riscv
> +       # no gdbserver on riscv until 10.1 release
> +       select BR2_PACKAGE_GDB_DEBUGGER if BR2_riscv && !BR2_GDB_VERSION_10
>         # When the external toolchain gdbserver is copied to the
>         # target, we don't allow building a separate gdbserver. The
>         # one from the external toolchain should be used.
> @@ -47,7 +47,7 @@ if BR2_PACKAGE_GDB
>  config BR2_PACKAGE_GDB_SERVER
>         bool "gdbserver"
>         depends on !BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY
> -       depends on !BR2_riscv
> +       depends on !BR2_riscv || BR2_riscv && BR2_GDB_VERSION_10
>         help
>           Build the gdbserver stub to run on the target.
>           A full gdb is needed to debug the progam.
> diff --git a/package/gdb/Config.in.host b/package/gdb/Config.in.host
> index 07e75b2c0e..5aead236d0 100644
> --- a/package/gdb/Config.in.host
> +++ b/package/gdb/Config.in.host
> @@ -4,7 +4,6 @@ config BR2_PACKAGE_HOST_GDB_ARCH_SUPPORTS
>         depends on !((BR2_arm || BR2_armeb) && BR2_BINFMT_FLAT)
>         depends on !BR2_microblaze
>         depends on !BR2_or1k
> -       depends on !BR2_riscv
>         depends on !BR2_nds32
>
>  comment "Host GDB Options"
> @@ -70,9 +69,11 @@ choice
>
>  config BR2_GDB_VERSION_8_3
>         bool "gdb 8.3.x"
> +       depends on !BR2_riscv
>
>  config BR2_GDB_VERSION_9_2
>         bool "gdb 9.2.x"
> +       depends on !BR2_riscv
>
>  config BR2_GDB_VERSION_10
>         bool "gdb 10.x"
> --
> 2.31.1
>
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