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

[PATCH 06/24] bsd-user/arm/target_arch_cpu.h: Dummy target_cpu_loop implementation

Posted by Warner Losh 4 years, 3 months ago

Add a boiler plate CPU loop that does nothing except return an error for
all traps.

Signed-off-by: Sean Bruno <sbruno@FreeBSD.org>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
---
 bsd-user/arm/target_arch_cpu.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/bsd-user/arm/target_arch_cpu.h b/bsd-user/arm/target_arch_cpu.h
index c71ec000b3..94c9109c3f 100644
--- a/bsd-user/arm/target_arch_cpu.h
+++ b/bsd-user/arm/target_arch_cpu.h
@@ -35,6 +35,28 @@ static inline void target_cpu_init(CPUARMState *env,
     }
 }
 
+static inline void target_cpu_loop(CPUARMState *env)
+{
+    int trapnr;
+    target_siginfo_t info;
+    CPUState *cs = env_cpu(env);
+
+    for (;;) {
+        cpu_exec_start(cs);
+        trapnr = cpu_exec(cs);
+        cpu_exec_end(cs);
+        process_queued_cpu_work(cs);
+        switch (trapnr) {
+        default:
+            fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
+                    trapnr);
+            cpu_dump_state(cs, stderr, 0);
+            abort();
+        } /* switch() */
+        process_pending_signals(env);
+    } /* for (;;) */
+}
+
 static inline void target_cpu_clone_regs(CPUARMState *env, target_ulong newsp)
 {
     if (newsp) {
-- 
2.32.0

Re: [PATCH 06/24] bsd-user/arm/target_arch_cpu.h: Dummy target_cpu_loop implementation

Posted by Kyle Evans 4 years, 3 months ago

On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <imp@bsdimp.com> wrote:
>
> Add a boiler plate CPU loop that does nothing except return an error for
> all traps.
>
> Signed-off-by: Sean Bruno <sbruno@FreeBSD.org>
> Signed-off-by: Stacey Son <sson@FreeBSD.org>
> Signed-off-by: Warner Losh <imp@bsdimp.com>
> ---
>  bsd-user/arm/target_arch_cpu.h | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
>
> diff --git a/bsd-user/arm/target_arch_cpu.h b/bsd-user/arm/target_arch_cpu.h
> index c71ec000b3..94c9109c3f 100644
> --- a/bsd-user/arm/target_arch_cpu.h
> +++ b/bsd-user/arm/target_arch_cpu.h
> @@ -35,6 +35,28 @@ static inline void target_cpu_init(CPUARMState *env,
>      }
>  }
>
> +static inline void target_cpu_loop(CPUARMState *env)
> +{
> +    int trapnr;
> +    target_siginfo_t info;
> +    CPUState *cs = env_cpu(env);
> +
> +    for (;;) {
> +        cpu_exec_start(cs);
> +        trapnr = cpu_exec(cs);
> +        cpu_exec_end(cs);
> +        process_queued_cpu_work(cs);
> +        switch (trapnr) {
> +        default:
> +            fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
> +                    trapnr);
> +            cpu_dump_state(cs, stderr, 0);
> +            abort();
> +        } /* switch() */
> +        process_pending_signals(env);
> +    } /* for (;;) */
> +}
> +
>  static inline void target_cpu_clone_regs(CPUARMState *env, target_ulong newsp)
>  {
>      if (newsp) {
> --
> 2.32.0
>

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

Re: [PATCH 06/24] bsd-user/arm/target_arch_cpu.h: Dummy target_cpu_loop implementation

Posted by Richard Henderson 4 years, 3 months ago

On 10/19/21 9:44 AM, Warner Losh wrote:
> Add a boiler plate CPU loop that does nothing except return an error for
> all traps.
> 
> Signed-off-by: Sean Bruno<sbruno@FreeBSD.org>
> Signed-off-by: Stacey Son<sson@FreeBSD.org>
> Signed-off-by: Warner Losh<imp@bsdimp.com>
> ---
>   bsd-user/arm/target_arch_cpu.h | 22 ++++++++++++++++++++++
>   1 file changed, 22 insertions(+)

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

r~