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Re: [PATCH 2/8] target/ppc: 405: Add missing exception handlers
From: |
David Gibson |
Subject: |
Re: [PATCH 2/8] target/ppc: 405: Add missing exception handlers |
Date: |
Tue, 11 Jan 2022 13:10:40 +1100 |
On Mon, Jan 10, 2022 at 03:15:40PM -0300, Fabiano Rosas wrote:
> Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
> ---
> target/ppc/cpu_init.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
> index a50ddaeaae..9097948e67 100644
> --- a/target/ppc/cpu_init.c
> +++ b/target/ppc/cpu_init.c
> @@ -1951,7 +1951,9 @@ static void init_excp_4xx_softmmu(CPUPPCState *env)
> env->excp_vectors[POWERPC_EXCP_EXTERNAL] = 0x00000500;
> env->excp_vectors[POWERPC_EXCP_ALIGN] = 0x00000600;
> env->excp_vectors[POWERPC_EXCP_PROGRAM] = 0x00000700;
> + env->excp_vectors[POWERPC_EXCP_FPU] = 0x00000800;
I have a vague recollection from my days of working on 405 that there
may have been something funky with FP emulation on there: e.g. FP
instructions causing 0x700 program interrupts instead of FP unavailble
interrupts or something.
I might be remembering incorrectly - the manual does seem to imply
that 0x800 FP unavailable is there as normal, but it might be worth
double checking this (against real hardware, if possible).
> env->excp_vectors[POWERPC_EXCP_SYSCALL] = 0x00000C00;
> + env->excp_vectors[POWERPC_EXCP_APU] = 0x00000F20;
> env->excp_vectors[POWERPC_EXCP_PIT] = 0x00001000;
> env->excp_vectors[POWERPC_EXCP_FIT] = 0x00001010;
> env->excp_vectors[POWERPC_EXCP_WDT] = 0x00001020;
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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- [PATCH 0/8] target/ppc: powerpc_excp improvements [40x] (3/n), Fabiano Rosas, 2022/01/10
- [PATCH 5/8] target/ppc: 405: Critical exceptions cleanup, Fabiano Rosas, 2022/01/10
- [PATCH 7/8] target/ppc: 405: External exception cleanup, Fabiano Rosas, 2022/01/10
- [PATCH 3/8] target/ppc: Introduce powerpc_excp_40x, Fabiano Rosas, 2022/01/10
- [PATCH 6/8] target/ppc: 405: Machine check exception cleanup, Fabiano Rosas, 2022/01/10