diff mbox series

[v2,02/14] xen/riscv: add <asm/asm.h> header

Message ID 9a098db8e3fef97df987b2a7330333b51a21cb8c.1674818705.git.oleksii.kurochko@gmail.com (mailing list archive)
State Superseded
Headers show
Series RISCV basic exception handling implementation | expand

Commit Message

Oleksii Jan. 27, 2023, 1:59 p.m. UTC 
Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
---
Changes in V2:
  - Nothing changed
---
 xen/arch/riscv/include/asm/asm.h | 54 ++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/asm.h

Comments

Alistair Francis Jan. 31, 2023, 12:49 a.m. UTC | #1 
On Fri, Jan 27, 2023 at 11:59 PM Oleksii Kurochko
<oleksii.kurochko@gmail.com> wrote:
>
> Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>

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

Alistair

> ---
> Changes in V2:
>   - Nothing changed
> ---
>  xen/arch/riscv/include/asm/asm.h | 54 ++++++++++++++++++++++++++++++++
>  1 file changed, 54 insertions(+)
>  create mode 100644 xen/arch/riscv/include/asm/asm.h
>
> diff --git a/xen/arch/riscv/include/asm/asm.h b/xen/arch/riscv/include/asm/asm.h
> new file mode 100644
> index 0000000000..6d426ecea7
> --- /dev/null
> +++ b/xen/arch/riscv/include/asm/asm.h
> @@ -0,0 +1,54 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only) */
> +/*
> + * Copyright (C) 2015 Regents of the University of California
> + */
> +
> +#ifndef _ASM_RISCV_ASM_H
> +#define _ASM_RISCV_ASM_H
> +
> +#ifdef __ASSEMBLY__
> +#define __ASM_STR(x)   x
> +#else
> +#define __ASM_STR(x)   #x
> +#endif
> +
> +#if __riscv_xlen == 64
> +#define __REG_SEL(a, b)        __ASM_STR(a)
> +#elif __riscv_xlen == 32
> +#define __REG_SEL(a, b)        __ASM_STR(b)
> +#else
> +#error "Unexpected __riscv_xlen"
> +#endif
> +
> +#define REG_L          __REG_SEL(ld, lw)
> +#define REG_S          __REG_SEL(sd, sw)
> +
> +#if __SIZEOF_POINTER__ == 8
> +#ifdef __ASSEMBLY__
> +#define RISCV_PTR              .dword
> +#else
> +#define RISCV_PTR              ".dword"
> +#endif
> +#elif __SIZEOF_POINTER__ == 4
> +#ifdef __ASSEMBLY__
> +#define RISCV_PTR              .word
> +#else
> +#define RISCV_PTR              ".word"
> +#endif
> +#else
> +#error "Unexpected __SIZEOF_POINTER__"
> +#endif
> +
> +#if (__SIZEOF_INT__ == 4)
> +#define RISCV_INT              __ASM_STR(.word)
> +#else
> +#error "Unexpected __SIZEOF_INT__"
> +#endif
> +
> +#if (__SIZEOF_SHORT__ == 2)
> +#define RISCV_SHORT            __ASM_STR(.half)
> +#else
> +#error "Unexpected __SIZEOF_SHORT__"
> +#endif
> +
> +#endif /* _ASM_RISCV_ASM_H */
> --
> 2.39.0
>
>
Oleksii Feb. 6, 2023, 4:22 p.m. UTC | #2 
Hi Andrew,

In the previous version of the patch series you mentioned that it is
possible to re-use some parts from the existing code base.

Could you please provide me with an example?

I assume that __ASM_STR should be present somewhere but other parts of
the header looks like it is arch-specific.

~ Oleksii

On Fri, 2023-01-27 at 15:59 +0200, Oleksii Kurochko wrote:
> Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
> ---
> Changes in V2:
>   - Nothing changed
> ---
>  xen/arch/riscv/include/asm/asm.h | 54
> ++++++++++++++++++++++++++++++++
>  1 file changed, 54 insertions(+)
>  create mode 100644 xen/arch/riscv/include/asm/asm.h
> 
> diff --git a/xen/arch/riscv/include/asm/asm.h
> b/xen/arch/riscv/include/asm/asm.h
> new file mode 100644
> index 0000000000..6d426ecea7
> --- /dev/null
> +++ b/xen/arch/riscv/include/asm/asm.h
> @@ -0,0 +1,54 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only) */
> +/*
> + * Copyright (C) 2015 Regents of the University of California
> + */
> +
> +#ifndef _ASM_RISCV_ASM_H
> +#define _ASM_RISCV_ASM_H
> +
> +#ifdef __ASSEMBLY__
> +#define __ASM_STR(x)   x
> +#else
> +#define __ASM_STR(x)   #x
> +#endif
> +
> +#if __riscv_xlen == 64
> +#define __REG_SEL(a, b)        __ASM_STR(a)
> +#elif __riscv_xlen == 32
> +#define __REG_SEL(a, b)        __ASM_STR(b)
> +#else
> +#error "Unexpected __riscv_xlen"
> +#endif
> +
> +#define REG_L          __REG_SEL(ld, lw)
> +#define REG_S          __REG_SEL(sd, sw)
> +
> +#if __SIZEOF_POINTER__ == 8
> +#ifdef __ASSEMBLY__
> +#define RISCV_PTR              .dword
> +#else
> +#define RISCV_PTR              ".dword"
> +#endif
> +#elif __SIZEOF_POINTER__ == 4
> +#ifdef __ASSEMBLY__
> +#define RISCV_PTR              .word
> +#else
> +#define RISCV_PTR              ".word"
> +#endif
> +#else
> +#error "Unexpected __SIZEOF_POINTER__"
> +#endif
> +
> +#if (__SIZEOF_INT__ == 4)
> +#define RISCV_INT              __ASM_STR(.word)
> +#else
> +#error "Unexpected __SIZEOF_INT__"
> +#endif
> +
> +#if (__SIZEOF_SHORT__ == 2)
> +#define RISCV_SHORT            __ASM_STR(.half)
> +#else
> +#error "Unexpected __SIZEOF_SHORT__"
> +#endif
> +
> +#endif /* _ASM_RISCV_ASM_H */
diff mbox series

Patch

diff --git a/xen/arch/riscv/include/asm/asm.h b/xen/arch/riscv/include/asm/asm.h
new file mode 100644
index 0000000000..6d426ecea7
--- /dev/null
+++ b/xen/arch/riscv/include/asm/asm.h
@@ -0,0 +1,54 @@ 
+/* SPDX-License-Identifier: (GPL-2.0-only) */
+/*
+ * Copyright (C) 2015 Regents of the University of California
+ */
+
+#ifndef _ASM_RISCV_ASM_H
+#define _ASM_RISCV_ASM_H
+
+#ifdef __ASSEMBLY__
+#define __ASM_STR(x)	x
+#else
+#define __ASM_STR(x)	#x
+#endif
+
+#if __riscv_xlen == 64
+#define __REG_SEL(a, b)	__ASM_STR(a)
+#elif __riscv_xlen == 32
+#define __REG_SEL(a, b)	__ASM_STR(b)
+#else
+#error "Unexpected __riscv_xlen"
+#endif
+
+#define REG_L		__REG_SEL(ld, lw)
+#define REG_S		__REG_SEL(sd, sw)
+
+#if __SIZEOF_POINTER__ == 8
+#ifdef __ASSEMBLY__
+#define RISCV_PTR		.dword
+#else
+#define RISCV_PTR		".dword"
+#endif
+#elif __SIZEOF_POINTER__ == 4
+#ifdef __ASSEMBLY__
+#define RISCV_PTR		.word
+#else
+#define RISCV_PTR		".word"
+#endif
+#else
+#error "Unexpected __SIZEOF_POINTER__"
+#endif
+
+#if (__SIZEOF_INT__ == 4)
+#define RISCV_INT		__ASM_STR(.word)
+#else
+#error "Unexpected __SIZEOF_INT__"
+#endif
+
+#if (__SIZEOF_SHORT__ == 2)
+#define RISCV_SHORT		__ASM_STR(.half)
+#else
+#error "Unexpected __SIZEOF_SHORT__"
+#endif
+
+#endif /* _ASM_RISCV_ASM_H */