From: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
This patch fixes setting DExcCode field of CP0 Debug register
when SDBBP instruction is executed. According to EJTAG specification,
this field must be set to the value 9 (Bp).
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
---
target/mips/helper.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/target/mips/helper.c b/target/mips/helper.c
index e359ca3b44..166f0d1243 100644
--- a/target/mips/helper.c
+++ b/target/mips/helper.c
@@ -627,6 +627,8 @@ void mips_cpu_do_interrupt(CPUState *cs)
goto set_DEPC;
case EXCP_DBp:
env->CP0_Debug |= 1 << CP0DB_DBp;
+ /* Setup DExcCode - SDBBP instruction */
+ env->CP0_Debug = (env->CP0_Debug & ~(0x1fULL << CP0DB_DEC)) | 9 << CP0DB_DEC;
goto set_DEPC;
case EXCP_DDBS:
env->CP0_Debug |= 1 << CP0DB_DDBS;
On 05/02/2017 09:03 AM, Pavel Dovgalyuk wrote: > From: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> > > This patch fixes setting DExcCode field of CP0 Debug register > when SDBBP instruction is executed. According to EJTAG specification, > this field must be set to the value 9 (Bp). > > Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> > --- > target/mips/helper.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/target/mips/helper.c b/target/mips/helper.c > index e359ca3b44..166f0d1243 100644 > --- a/target/mips/helper.c > +++ b/target/mips/helper.c > @@ -627,6 +627,8 @@ void mips_cpu_do_interrupt(CPUState *cs) > goto set_DEPC; > case EXCP_DBp: > env->CP0_Debug |= 1 << CP0DB_DBp; > + /* Setup DExcCode - SDBBP instruction */ > + env->CP0_Debug = (env->CP0_Debug & ~(0x1fULL << CP0DB_DEC)) | 9 << CP0DB_DEC; > goto set_DEPC; > case EXCP_DDBS: > env->CP0_Debug |= 1 << CP0DB_DDBS; > >
On 2017-05-02 15:03, Pavel Dovgalyuk wrote: > From: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> > > This patch fixes setting DExcCode field of CP0 Debug register > when SDBBP instruction is executed. According to EJTAG specification, > this field must be set to the value 9 (Bp). > > Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> > --- > target/mips/helper.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/target/mips/helper.c b/target/mips/helper.c > index e359ca3b44..166f0d1243 100644 > --- a/target/mips/helper.c > +++ b/target/mips/helper.c > @@ -627,6 +627,8 @@ void mips_cpu_do_interrupt(CPUState *cs) > goto set_DEPC; > case EXCP_DBp: > env->CP0_Debug |= 1 << CP0DB_DBp; > + /* Setup DExcCode - SDBBP instruction */ > + env->CP0_Debug = (env->CP0_Debug & ~(0x1fULL << CP0DB_DEC)) | 9 << CP0DB_DEC; > goto set_DEPC; > case EXCP_DDBS: > env->CP0_Debug |= 1 << CP0DB_DDBS; > Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> -- Aurelien Jarno GPG: 4096R/1DDD8C9B aurelien@aurel32.net http://www.aurel32.net
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