-----Original Message-----
> The gssq instruction is a Loongson extended instruction, so the gssq patch
> is applied to gdb.
>
> Signed-off-by: Huacai Chen <chenhua...@loongson.cn>
> Signed-off-by: Youling Tang <tangyoul...@loongson.cn>
> ---
> Makefile | 3 +++
> configure.c | 2 +-
> gdb-7.6-loongson.patch | 19 +++++++++++++++++++
> 3 files changed, 23 insertions(+), 1 deletion(-)
> create mode 100644 gdb-7.6-loongson.patch
>
> diff --git a/Makefile b/Makefile
> index eb1e018..c629d17 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -277,6 +277,9 @@ gdb_patch:
> patch -p0 < ${GDB}-proc_service.h.patch; \
> fi; \
> fi
> + if [ "${ARCH}" = "mips64" ] && [ -f ${GDB}-loongson.patch ]; then \
> + patch -d ${GDB} -p1 -F0 < ${GDB}-loongson.patch ; \
> + fi
Does this patch break the other architectures?
If it doesn't, I would like to avoid adding a new architecture-specific
patch. It will make the maintenance of gdb patches very complicated.
Is it possible to add that patch to the end of gdb-7.6.patch?
(Note that gdb-7.6-ppc64le.patch also has to be applied cleanly.)
Thanks,
Kazu
>
> library: make_build_data ${OBJECT_FILES}
> ar -rs ${PROGRAM}lib.a ${OBJECT_FILES}
> diff --git a/configure.c b/configure.c
> index e2df6f0..40351c3 100644
> --- a/configure.c
> +++ b/configure.c
> @@ -245,7 +245,7 @@ struct supported_gdb_version {
> "7.6",
> "GDB_FILES=${GDB_7.6_FILES}",
> "GDB_OFILES=${GDB_7.6_OFILES}",
> - "GDB_PATCH_FILES=gdb-7.6.patch gdb-7.6-ppc64le-support.patch
> gdb-7.6-proc_service.h.patch",
> + "GDB_PATCH_FILES=gdb-7.6.patch gdb-7.6-ppc64le-support.patch
> gdb-7.6-proc_service.h.patch
> gdb-7.6-loongson.patch",
> "GDB_FLAGS=-DGDB_7_6",
> "GPLv3"
> },
> diff --git a/gdb-7.6-loongson.patch b/gdb-7.6-loongson.patch
> new file mode 100644
> index 0000000..556163f
> --- /dev/null
> +++ b/gdb-7.6-loongson.patch
> @@ -0,0 +1,19 @@
> +--- gdb-7.6/gdb/mips-tdep.c.orig 2018-08-28 11:20:32.653771170 +0800
> ++++ gdb-7.6/gdb/mips-tdep.c 2018-08-28 11:25:53.129043377 +0800
> +@@ -3261,6 +3261,16 @@ restart:
> + /* Irix 6.2 N32 ABI uses sd instructions for saving $gp and $ra. */
> + set_reg_offset (gdbarch, this_cache, reg, sp + low_word);
> + }
> ++ else if (((inst & 0xFFE08020) == 0xeba00020) /* gssq
> reg,reg,offset($sp) */
> ++ && regsize_is_64_bits)
> ++ {
> ++ reg = (inst >> 16) & 0x1F;
> ++ low_word = ((((inst >> 6) & 0x1FF) ^ 0x100) - 0x100) << 4;
> ++ set_reg_offset (gdbarch, this_cache, reg, sp + low_word);
> ++ reg = inst & 0x1F;
> ++ low_word = (((((inst >> 6) & 0x1FF) ^ 0x100) - 0x100) << 4) + 8;
> ++ set_reg_offset (gdbarch, this_cache, reg, sp + low_word);
> ++ }
> + else if (high_word == 0x27be) /* addiu $30,$sp,size */
> + {
> + /* Old gcc frame, r30 is virtual frame pointer. */
> --
> 2.1.0
--
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