From: Michael Ellerman <mpe@ellerman.id.au>
To: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH 1/3] powerpc: Split out instruction analysis part of emulate_step()
Date: Thu, 21 Aug 2014 16:38:50 +1000 [thread overview]
Message-ID: <1408603130.9307.6.camel@concordia> (raw)
In-Reply-To: <1408363992-7929-2-git-send-email-paulus@samba.org>
On Mon, 2014-08-18 at 22:13 +1000, Paul Mackerras wrote:
> This splits out the instruction analysis part of emulate_step() into
> a separate analyse_instr() function, which decodes the instruction,
> but doesn't execute any load or store instructions. It does execute
> integer instructions and branches which can be executed purely by
> updating register values in the pt_regs struct. For other instructions,
> it returns the instruction type and other details in a new
> instruction_op struct. emulate_step() then uses that information
> to execute loads, stores, cache operations, mfmsr, mtmsr[d], and
> (on 64-bit) sc instructions.
>
> The reason for doing this is so that the KVM code can use it instead
> of having its own separate instruction emulation code. Possibly the
> alignment interrupt handler could also use this.
Breaks the ppc64e_defconfig build:
arch/powerpc/lib/sstep.c: In function 'emulate_step':
arch/powerpc/lib/sstep.c:1794:3: error: implicit declaration of function 'do_vec_load' [-Werror=implicit-function-declaration]
reg, do_lvx, op.ea & ~0xfUL, regs);
arch/powerpc/lib/sstep.c:1840:3: error: implicit declaration of function 'do_vec_store' [-Werror=implicit-function-declaration]
err = do_vec_store(op.reg, do_stvx, op.ea & ~0xfUL, regs);
^
cheers
next prev parent reply other threads:[~2014-08-21 6:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-18 12:13 [PATCH 0/3] powerpc: Make sstep.c more generally useful Paul Mackerras
2014-08-18 12:13 ` [PATCH 1/3] powerpc: Split out instruction analysis part of emulate_step() Paul Mackerras
2014-08-21 6:38 ` Michael Ellerman [this message]
2014-08-18 12:13 ` [PATCH 2/3] powerpc: Emulate icbi, mcrf and conditional-trap instructions Paul Mackerras
2014-08-18 12:13 ` [PATCH 3/3] powerpc: Implement emulation of string loads and stores Paul Mackerras
2014-09-02 4:35 [PATCH v2 0/3] powerpc: Make sstep.c more generally useful Paul Mackerras
2014-09-02 4:35 ` [PATCH 1/3] powerpc: Split out instruction analysis part of emulate_step() Paul Mackerras
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