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From: Sandipan Das <sandipan@linux.ibm.com>
To: sandipan@linux.ibm.com
Cc: naveen.n.rao@linux.ibm.com, paulus@samba.org,
	linuxppc-dev@lists.ozlabs.org, ravi.bangoria@linux.ibm.com
Subject: [PATCH v2 4/6] powerpc sstep: Add support for extswsli instruction
Date: Fri, 22 Feb 2019 12:23:30 +0530	[thread overview]
Message-ID: <889bd04c9730ea9ef33f42f72046a239c1e79590.1550817743.git.sandipan@linux.ibm.com> (raw)
In-Reply-To: <cover.1550817742.git.sandipan@linux.ibm.com>

This adds emulation support for the following integer instructions:
  * Extend-Sign Word and Shift Left Immediate (extswsli[.])

Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
---
 arch/powerpc/lib/sstep.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 94189da4c159..742298bdf30b 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -1935,6 +1935,20 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
 				op->xerval &= ~XER_CA;
 			set_ca32(op, op->xerval & XER_CA);
 			goto logical_done;
+
+		case 890:	/* extswsli with sh_5 = 0 */
+		case 891:	/* extswsli with sh_5 = 1 */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				return -1;
+			op->type = COMPUTE + SETREG;
+			sh = rb | ((instr & 2) << 4);
+			val = (signed int) regs->gpr[rd];
+			if (sh)
+				op->val = ROTATE(val, sh) & MASK64(0, 63 - sh);
+			else
+				op->val = val;
+			goto logical_done;
+
 #endif /* __powerpc64__ */
 
 /*
-- 
2.19.2


WARNING: multiple messages have this Message-ID (diff)
From: Sandipan Das <sandipan@linux.ibm.com>
To: mpe@ellerman.id.au
Cc: naveen.n.rao@linux.ibm.com, paulus@samba.org,
	linuxppc-dev@lists.ozlabs.org, ravi.bangoria@linux.ibm.com
Subject: [PATCH v2 4/6] powerpc sstep: Add support for extswsli instruction
Date: Fri, 22 Feb 2019 12:24:50 +0530	[thread overview]
Message-ID: <889bd04c9730ea9ef33f42f72046a239c1e79590.1550817743.git.sandipan@linux.ibm.com> (raw)
Message-ID: <20190222065450.rb_Td_S_wRQt-6g86ax87s9LyPpo9J0fojkB0BeAImw@z> (raw)
In-Reply-To: <cover.1550817742.git.sandipan@linux.ibm.com>

This adds emulation support for the following integer instructions:
  * Extend-Sign Word and Shift Left Immediate (extswsli[.])

Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
---
 arch/powerpc/lib/sstep.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 94189da4c159..742298bdf30b 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -1935,6 +1935,20 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
 				op->xerval &= ~XER_CA;
 			set_ca32(op, op->xerval & XER_CA);
 			goto logical_done;
+
+		case 890:	/* extswsli with sh_5 = 0 */
+		case 891:	/* extswsli with sh_5 = 1 */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				return -1;
+			op->type = COMPUTE + SETREG;
+			sh = rb | ((instr & 2) << 4);
+			val = (signed int) regs->gpr[rd];
+			if (sh)
+				op->val = ROTATE(val, sh) & MASK64(0, 63 - sh);
+			else
+				op->val = val;
+			goto logical_done;
+
 #endif /* __powerpc64__ */
 
 /*
-- 
2.19.2


  parent reply	other threads:[~2019-02-22  7:02 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-22  6:53 [PATCH v2 0/6] powerpc: sstep: Extend instruction emulation support Sandipan Das
2019-02-22  6:53 ` [PATCH v2 1/6] powerpc: sstep: Add support for maddhd, maddhdu, maddld instructions Sandipan Das
2019-02-22  6:54   ` Sandipan Das
2019-02-28  9:21   ` [v2, " Michael Ellerman
2019-02-22  6:53 ` [PATCH v2 2/6] powerpc: sstep: Add support for darn instruction Sandipan Das
2019-02-22  6:54   ` Sandipan Das
2019-02-22  6:53 ` [PATCH v2 3/6] powerpc sstep: Add support for cnttzw, cnttzd instructions Sandipan Das
2019-02-22  6:54   ` Sandipan Das
2019-02-22  6:53 ` Sandipan Das [this message]
2019-02-22  6:54   ` [PATCH v2 4/6] powerpc sstep: Add support for extswsli instruction Sandipan Das
2019-02-22  6:53 ` [PATCH v2 5/6] powerpc sstep: Add support for modsw, moduw instructions Sandipan Das
2019-02-22  6:54   ` Sandipan Das
2019-02-22  6:53 ` [PATCH v2 6/6] powerpc sstep: Add support for modsd, modud instructions Sandipan Das
2019-02-22  6:54   ` Sandipan Das
2019-02-22  6:54 ` [PATCH v2 0/6] powerpc: sstep: Extend instruction emulation support Sandipan Das

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