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[Qemu-devel] [PATCH 2/2 for-2.6] target-sparc: fix Trap Based Address Re
From: |
Artyom Tarasenko |
Subject: |
[Qemu-devel] [PATCH 2/2 for-2.6] target-sparc: fix Trap Based Address Register behavior for sparc64 |
Date: |
Thu, 14 Apr 2016 11:29:16 +0200 |
Accoding the chapter 7.6 Trap Processing of the SPARC Architecture Manual v9,
the Trap Based Address Register is not modified as a trap is taken.
This fix allows booting FreeBSD-10.3-RELEASE-sparc64.
Signed-off-by: Artyom Tarasenko <address@hidden>
---
target-sparc/int64_helper.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/target-sparc/int64_helper.c b/target-sparc/int64_helper.c
index aa876cd..29360fa 100644
--- a/target-sparc/int64_helper.c
+++ b/target-sparc/int64_helper.c
@@ -158,9 +158,8 @@ void sparc_cpu_do_interrupt(CPUState *cs)
} else if ((intno & 0x1c0) == TT_FILL) {
cpu_set_cwp(env, cpu_cwp_inc(env, env->cwp + 1));
}
- env->tbr &= ~0x7fffULL;
- env->tbr |= ((env->tl > 1) ? 1 << 14 : 0) | (intno << 5);
- env->pc = env->tbr;
+ env->pc = env->tbr & ~0x7fffULL;
+ env->pc |= ((env->tl > 1) ? 1 << 14 : 0) | (intno << 5);
env->npc = env->pc + 4;
cs->exception_index = -1;
}
--
1.8.3.1