[v1] bsd-user: arm (32-bit) support

[PATCH 05/24] bsd-user/arm/target_arch_cpu.h: Implement target_cpu_clone_regs

Posted by Warner Losh 4 years, 3 months ago

Implement target_cpu_clone_regs to clone the resister state on a fork.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
---
 bsd-user/arm/target_arch_cpu.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/bsd-user/arm/target_arch_cpu.h b/bsd-user/arm/target_arch_cpu.h
index 0f3538196d..c71ec000b3 100644
--- a/bsd-user/arm/target_arch_cpu.h
+++ b/bsd-user/arm/target_arch_cpu.h
@@ -35,6 +35,14 @@ static inline void target_cpu_init(CPUARMState *env,
     }
 }
 
+static inline void target_cpu_clone_regs(CPUARMState *env, target_ulong newsp)
+{
+    if (newsp) {
+        env->regs[13] = newsp;
+    }
+    env->regs[0] = 0;
+}
+
 static inline void target_cpu_reset(CPUArchState *cpu)
 {
 }
-- 
2.32.0

Re: [PATCH 05/24] bsd-user/arm/target_arch_cpu.h: Implement target_cpu_clone_regs

Posted by Kyle Evans 4 years, 3 months ago

On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <imp@bsdimp.com> wrote:
>
> Implement target_cpu_clone_regs to clone the resister state on a fork.
>
> Signed-off-by: Stacey Son <sson@FreeBSD.org>
> Signed-off-by: Warner Losh <imp@bsdimp.com>
> ---
>  bsd-user/arm/target_arch_cpu.h | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/bsd-user/arm/target_arch_cpu.h b/bsd-user/arm/target_arch_cpu.h
> index 0f3538196d..c71ec000b3 100644
> --- a/bsd-user/arm/target_arch_cpu.h
> +++ b/bsd-user/arm/target_arch_cpu.h
> @@ -35,6 +35,14 @@ static inline void target_cpu_init(CPUARMState *env,
>      }
>  }
>
> +static inline void target_cpu_clone_regs(CPUARMState *env, target_ulong newsp)
> +{
> +    if (newsp) {
> +        env->regs[13] = newsp;
> +    }
> +    env->regs[0] = 0;
> +}
> +
>  static inline void target_cpu_reset(CPUArchState *cpu)
>  {
>  }
> --
> 2.32.0
>

Reviewed-by: Kyle Evans <kevans@FreeBSD.org>

Re: [PATCH 05/24] bsd-user/arm/target_arch_cpu.h: Implement target_cpu_clone_regs

Posted by Richard Henderson 4 years, 3 months ago

On 10/19/21 9:44 AM, Warner Losh wrote:
> Implement target_cpu_clone_regs to clone the resister state on a fork.
> 
> Signed-off-by: Stacey Son<sson@FreeBSD.org>
> Signed-off-by: Warner Losh<imp@bsdimp.com>
> ---
>   bsd-user/arm/target_arch_cpu.h | 8 ++++++++
>   1 file changed, 8 insertions(+)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~