From 9693a85378b590cc7a4aa2db2174422585c7c8c4 Mon Sep 17 00:00:00 2001 From: Franck Bui-Huu Date: Fri, 2 Feb 2007 17:41:47 +0100 Subject: [MIPS] Add basic SMARTMIPS ASE support This patch adds trivial support for SMARTMIPS extension. This extension is currently implemented by 4KS[CD] CPUs. Basically it saves/restores ACX register, which is part of the SMARTMIPS ASE, when needed. This patch does *not* add any support for Smartmips MMU features. Futhermore this patch does not add explicit support for 4KS[CD] CPUs since they are respectively mips32 and mips32r2 compliant. So with the current processor configuration, a platform that has such CPUs needs to select both configs: CPU_HAS_SMARTMIPS SYS_HAS_CPU_MIPS32_R[12] This is due to the processor configuration which is mixing up all the architecture variants and the processor types. The drawback of this, is that we currently pass '-march=mips32' option to gcc when building a kernel instead of '-march=4ksc' for 4KSC case. This can lead to a kernel image a little bit bigger than required. Signed-off-by: Franck Bui-Huu Signed-off-by: Ralf Baechle --- include/asm-mips/sigcontext.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/asm-mips/sigcontext.h') diff --git a/include/asm-mips/sigcontext.h b/include/asm-mips/sigcontext.h index 972947474eb..9ce0607d7a4 100644 --- a/include/asm-mips/sigcontext.h +++ b/include/asm-mips/sigcontext.h @@ -23,7 +23,7 @@ struct sigcontext { unsigned long long sc_pc; unsigned long long sc_regs[32]; unsigned long long sc_fpregs[32]; - unsigned int sc_ownedfp; /* Unused */ + unsigned int sc_acx; /* Was sc_ownedfp */ unsigned int sc_fpc_csr; unsigned int sc_fpc_eir; /* Unused */ unsigned int sc_used_math; @@ -79,7 +79,7 @@ struct sigcontext32 { __u64 sc_pc; __u64 sc_regs[32]; __u64 sc_fpregs[32]; - __u32 sc_ownedfp; /* Unused */ + __u32 sc_acx; /* Only MIPS32; was sc_ownedfp */ __u32 sc_fpc_csr; __u32 sc_fpc_eir; /* Unused */ __u32 sc_used_math; -- cgit v1.2.3