Re: [PATCH v9 03/10] LoongArch: Add setjmp implementation

[孙海勇]

Hi

     I've tested this patch set on a physical machine, the OS environment is a 
CLFS system I made based on LoongArch and they work well. It would be great if 
this patch set could be merged into the master branch. That way, I can happily 
boot my system directly with the official code.


> -----原始邮件-----
> 发件人: "Xiaotian Wu" <wuxiaotian@loongson.cn>
> 发送时间:2022-08-11 20:28:18 (星期四)
> 收件人: grub-devel@gnu.org
> 抄送: git@xen0n.name, development@efficientek.com, daniel.kiper@oracle.com, 
> "Xiaotian Wu" <wuxiaotian@loongson.cn>, "Zhou Yang" <zhouyang@loongson.cn>, 
> "Sun Haiyong" <sunhaiyong@loongson.cn>
> 主题: [PATCH v9 03/10] LoongArch: Add setjmp implementation
> 
> Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn>
> Signed-off-by: Zhou Yang <zhouyang@loongson.cn>
> Signed-off-by: Sun Haiyong <sunhaiyong@loongson.cn>
> ---
>  grub-core/lib/loongarch64/setjmp.S | 69 ++++++++++++++++++++++++++++++
>  grub-core/lib/setjmp.S             |  2 +
>  include/grub/loongarch64/setjmp.h  | 27 ++++++++++++
>  3 files changed, 98 insertions(+)
>  create mode 100644 grub-core/lib/loongarch64/setjmp.S
>  create mode 100644 include/grub/loongarch64/setjmp.h
> 
> diff --git a/grub-core/lib/loongarch64/setjmp.S 
> b/grub-core/lib/loongarch64/setjmp.S
> new file mode 100644
> index 000000000..41d58f569
> --- /dev/null
> +++ b/grub-core/lib/loongarch64/setjmp.S
> @@ -0,0 +1,69 @@
> +/*
> + *  GRUB  --  GRand Unified Bootloader
> + *  Copyright (C) 2022 Free Software Foundation, Inc.
> + *
> + *  GRUB is free software: you can redistribute it and/or modify
> + *  it under the terms of the GNU General Public License as published by
> + *  the Free Software Foundation, either version 3 of the License, or
> + *  (at your option) any later version.
> + *
> + *  GRUB is distributed in the hope that it will be useful,
> + *  but WITHOUT ANY WARRANTY; without even the implied warranty of
> + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + *  GNU General Public License for more details.
> + *
> + *  You should have received a copy of the GNU General Public License
> + *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
> + */
> +
> +#include <grub/dl.h>
> +
> +     .file   "setjmp.S"
> +
> +GRUB_MOD_LICENSE "GPLv3+"
> +
> +     .text
> +
> +/*
> + * int grub_setjmp (jmp_buf env)
> + */
> +FUNCTION(grub_setjmp)
> +     st.d $s0, $a0, 0x0
> +     st.d $s1, $a0, 0x8
> +     st.d $s2, $a0, 0x10
> +     st.d $s3, $a0, 0x18
> +     st.d $s4, $a0, 0x20
> +     st.d $s5, $a0, 0x28
> +     st.d $s6, $a0, 0x30
> +     st.d $s7, $a0, 0x38
> +     st.d $s8, $a0, 0x40
> +     st.d $fp, $a0, 0x48
> +     st.d $sp, $a0, 0x50
> +     st.d $ra, $a0, 0x58
> +
> +     move $a0, $zero
> +     jr   $ra
> +
> +/*
> + * void grub_longjmp (jmp_buf env, int val)
> + */
> +FUNCTION(grub_longjmp)
> +     ld.d $s0, $a0, 0x0
> +     ld.d $s1, $a0, 0x8
> +     ld.d $s2, $a0, 0x10
> +     ld.d $s3, $a0, 0x18
> +     ld.d $s4, $a0, 0x20
> +     ld.d $s5, $a0, 0x28
> +     ld.d $s6, $a0, 0x30
> +     ld.d $s7, $a0, 0x38
> +     ld.d $s8, $a0, 0x40
> +     ld.d $fp, $a0, 0x48
> +     ld.d $sp, $a0, 0x50
> +     ld.d $ra, $a0, 0x58
> +
> +     /* Return 1 if passed 0, otherwise returns the value in place. */
> +     li.w $a0, 1
> +     beqz $a1, 1f
> +     move $a0, $a1
> +1:
> +     jr   $ra
> diff --git a/grub-core/lib/setjmp.S b/grub-core/lib/setjmp.S
> index 9c8721088..cba1d546d 100644
> --- a/grub-core/lib/setjmp.S
> +++ b/grub-core/lib/setjmp.S
> @@ -19,6 +19,8 @@
>  #include "./arm/setjmp.S"
>  #elif defined(__aarch64__)
>  #include "./arm64/setjmp.S"
> +#elif defined(__loongarch64)
> +#include "./loongarch64/setjmp.S"
>  #elif defined(__riscv)
>  #include "./riscv/setjmp.S"
>  #else
> diff --git a/include/grub/loongarch64/setjmp.h 
> b/include/grub/loongarch64/setjmp.h
> new file mode 100644
> index 000000000..cb3e17763
> --- /dev/null
> +++ b/include/grub/loongarch64/setjmp.h
> @@ -0,0 +1,27 @@
> +/*
> + *  GRUB  --  GRand Unified Bootloader
> + *  Copyright (C) 2022 Free Software Foundation, Inc.
> + *
> + *  GRUB is free software: you can redistribute it and/or modify
> + *  it under the terms of the GNU General Public License as published by
> + *  the Free Software Foundation, either version 3 of the License, or
> + *  (at your option) any later version.
> + *
> + *  GRUB is distributed in the hope that it will be useful,
> + *  but WITHOUT ANY WARRANTY; without even the implied warranty of
> + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + *  GNU General Public License for more details.
> + *
> + *  You should have received a copy of the GNU General Public License
> + *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
> + */
> +
> +#ifndef GRUB_SETJMP_CPU_HEADER
> +#define GRUB_SETJMP_CPU_HEADER       1
> +
> +typedef grub_uint64_t grub_jmp_buf[12];
> +
> +int grub_setjmp (grub_jmp_buf env) RETURNS_TWICE;
> +void grub_longjmp (grub_jmp_buf env, int val) __attribute__ ((noreturn));
> +
> +#endif /* ! GRUB_SETJMP_CPU_HEADER */
> -- 
> 2.35.1


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