From c6d8ed24b446b1f1e07af87cde54317f54a1d42e Mon Sep 17 00:00:00 2001 From: Jani Kokkonen Date: Wed, 10 Jul 2013 17:02:00 +0200 Subject: tcg/aarch64: Implement tlb lookup fast path Supports CONFIG_QEMU_LDST_OPTIMIZATION Signed-off-by: Jani Kokkonen Reviewed-by: Richard Henderson Reviewed-by: Claudio Fontana --- include/exec/exec-all.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/exec') diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h index b2162a4ec4..5920f73c90 100644 --- a/include/exec/exec-all.h +++ b/include/exec/exec-all.h @@ -358,6 +358,20 @@ static inline uintptr_t tcg_getpc_ldst(uintptr_t ra) not the start of the next opcode */ return ra; } +#elif defined(__aarch64__) +# define GETRA() ((uintptr_t)__builtin_return_address(0)) +# define GETPC_LDST() tcg_getpc_ldst(GETRA()) +static inline uintptr_t tcg_getpc_ldst(uintptr_t ra) +{ + int32_t b; + ra += 4; /* skip one instruction */ + b = *(int32_t *)ra; /* load the branch insn */ + b = (b << 6) >> (6 - 2); /* extract the displacement */ + ra += b; /* apply the displacement */ + ra -= 4; /* return a pointer into the current opcode, + not the start of the next opcode */ + return ra; +} # else # error "CONFIG_QEMU_LDST_OPTIMIZATION needs GETPC_LDST() implementation!" # endif -- cgit v1.2.3