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From: Vineet Gupta <vgupta@kernel.org>
To: linux-snps-arc@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, Pavel.Kozlov@synopsys.com,
	Vineet Gupta <vgupta@kernel.org>
Subject: [PATCH 2/5] ARC: entry: move ARCompact specific bits out of entry.h
Date: Fri,  8 Dec 2023 16:33:04 -0800	[thread overview]
Message-ID: <20231209003307.480051-3-vgupta@kernel.org> (raw)
In-Reply-To: <20231209003307.480051-1-vgupta@kernel.org>

 - PUSHAUX/POPAUX helpers to ARCompact entry
 - use gas provided "push"/pop pseudo instructions

Signed-off-by: Vineet Gupta <vgupta@kernel.org>
---
 arch/arc/include/asm/entry-compact.h | 55 ++++++++++++++++++++++-
 arch/arc/include/asm/entry.h         | 66 ----------------------------
 2 files changed, 54 insertions(+), 67 deletions(-)

diff --git a/arch/arc/include/asm/entry-compact.h b/arch/arc/include/asm/entry-compact.h
index 9841f1186417..92c3e9f13252 100644
--- a/arch/arc/include/asm/entry-compact.h
+++ b/arch/arc/include/asm/entry-compact.h
@@ -33,6 +33,59 @@
 #include <asm/irqflags-compact.h>
 #include <asm/thread_info.h>	/* For THREAD_SIZE */
 
+/* Note on the LD/ST addr modes with addr reg wback
+ *
+ * LD.a same as LD.aw
+ *
+ * LD.a    reg1, [reg2, x]  => Pre Incr
+ *      Eff Addr for load = [reg2 + x]
+ *
+ * LD.ab   reg1, [reg2, x]  => Post Incr
+ *      Eff Addr for load = [reg2]
+ */
+
+.macro PUSHAX aux
+	lr	r9, [\aux]
+	push	r9
+.endm
+
+.macro POPAX aux
+	pop	r9
+	sr	r9, [\aux]
+.endm
+
+.macro  SAVE_R0_TO_R12
+	push	r0
+	push	r1
+	push	r2
+	push	r3
+	push	r4
+	push	r5
+	push	r6
+	push	r7
+	push	r8
+	push	r9
+	push	r10
+	push	r11
+	push	r12
+.endm
+
+.macro RESTORE_R12_TO_R0
+	pop	r12
+	pop	r11
+	pop	r10
+	pop	r9
+	pop	r8
+	pop	r7
+	pop	r6
+	pop	r5
+	pop	r4
+	pop	r3
+	pop	r2
+	pop	r1
+	pop	r0
+.endm
+
 .macro SAVE_ABI_CALLEE_REGS
 	push	r13
 	push	r14
@@ -267,7 +320,7 @@
 	SWITCH_TO_KERNEL_STK
 
 
-	PUSH	0x003\LVL\()abcd    /* Dummy ECR */
+	st.a	0x003\LVL\()abcd, [sp, -4]	/* Dummy ECR */
 	sub	sp, sp, 8	    /* skip orig_r0 (not needed)
 				       skip pt_regs->sp, already saved above */
 
diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h
index 8e4e40d2d54a..cf1ba376e992 100644
--- a/arch/arc/include/asm/entry.h
+++ b/arch/arc/include/asm/entry.h
@@ -21,72 +21,6 @@
 #include <asm/entry-arcv2.h>
 #endif
 
-/* Note on the LD/ST addr modes with addr reg wback
- *
- * LD.a same as LD.aw
- *
- * LD.a    reg1, [reg2, x]  => Pre Incr
- *      Eff Addr for load = [reg2 + x]
- *
- * LD.ab   reg1, [reg2, x]  => Post Incr
- *      Eff Addr for load = [reg2]
- */
-
-.macro PUSH reg
-	st.a	\reg, [sp, -4]
-.endm
-
-.macro PUSHAX aux
-	lr	r9, [\aux]
-	PUSH	r9
-.endm
-
-.macro POP reg
-	ld.ab	\reg, [sp, 4]
-.endm
-
-.macro POPAX aux
-	POP	r9
-	sr	r9, [\aux]
-.endm
-
-/*--------------------------------------------------------------
- * Helpers to save/restore Scratch Regs:
- * used by Interrupt/Exception Prologue/Epilogue
- *-------------------------------------------------------------*/
-.macro  SAVE_R0_TO_R12
-	PUSH	r0
-	PUSH	r1
-	PUSH	r2
-	PUSH	r3
-	PUSH	r4
-	PUSH	r5
-	PUSH	r6
-	PUSH	r7
-	PUSH	r8
-	PUSH	r9
-	PUSH	r10
-	PUSH	r11
-	PUSH	r12
-.endm
-
-.macro RESTORE_R12_TO_R0
-	POP	r12
-	POP	r11
-	POP	r10
-	POP	r9
-	POP	r8
-	POP	r7
-	POP	r6
-	POP	r5
-	POP	r4
-	POP	r3
-	POP	r2
-	POP	r1
-	POP	r0
-
-.endm
-
 /*
  * save user mode callee regs as struct callee_regs
  *  - needed by fork/do_signal/unaligned-access-emulation.
-- 
2.34.1


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  parent reply	other threads:[~2023-12-09  0:33 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-09  0:33 [PATCH 0/5] ARC updates Vineet Gupta
2023-12-09  0:33 ` [PATCH 1/5] ARC: entry: SAVE_ABI_CALLEE_REG: ISA/ABI specific helper Vineet Gupta
2023-12-09  0:33 ` Vineet Gupta [this message]
2023-12-09  0:33 ` [PATCH 3/5] ARC: mm: retire support for aliasing VIPT D$ Vineet Gupta
2023-12-09  0:33 ` [PATCH 4/5] ARC: fix spare error Vineet Gupta
2023-12-09  0:33 ` [PATCH 5/5] ARC: fix smatch warning Vineet Gupta
2023-12-11 17:38 ` [PATCH 0/5] ARC updates Pavel.Kozlov

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