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target-ppc: Add Store Quadword Conditional

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This patch adds the Store Quadword Conditionl (stqcx.) instruction
which is introduced in Power ISA 2.07.

Signed-off-by: Tom Musta <tommusta@gmail.com>
[agraf: fix compile error when !TARGET_PPC64]
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-02-10 11:27:01 -06:00 • committed by Alexander Graf
parent 9c294d5ab3
commit 27b95bfe62
2 changed files with 38 additions and 1 deletions
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18
linux-user/main.c
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@ -1492,7 +1492,7 @@ static int do_store_exclusive(CPUPPCState *env)
{
target_ulong addr;
target_ulong page_addr;
target_ulong val;
target_ulong val, val2 __attribute__((unused));
int flags;
int segv = 0;
@ -1515,6 +1515,13 @@ static int do_store_exclusive(CPUPPCState *env)
case 4: segv = get_user_u32(val, addr); break;
#if defined(TARGET_PPC64)
case 8: segv = get_user_u64(val, addr); break;
case 16: {
segv = get_user_u64(val, addr);
if (!segv) {
segv = get_user_u64(val2, addr + 8);
}
break;
}
#endif
default: abort();
}
@ -1526,6 +1533,15 @@ static int do_store_exclusive(CPUPPCState *env)
case 4: segv = put_user_u32(val, addr); break;
#if defined(TARGET_PPC64)
case 8: segv = put_user_u64(val, addr); break;
case 16: {
if (val2 == env->reserve_val2) {
segv = put_user_u64(val, addr);
if (!segv) {
segv = put_user_u64(val2, addr + 8);
}
}
break;
}
#endif
default: abort();
}