All of lore.kernel.org
 help / color / mirror / Atom feed
From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [RFC PATCH 05/19] powerpc/32: Use load and store multiple in GPR save/restore macros
Date: Mon, 31 Oct 2022 15:54:26 +1000	[thread overview]
Message-ID: <20221031055440.3594315-6-npiggin@gmail.com> (raw)
In-Reply-To: <20221031055440.3594315-1-npiggin@gmail.com>

---
 arch/powerpc/include/asm/ppc_asm.h | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index 753a2757bcd4..ac44383d350a 100644
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -57,8 +57,22 @@
 #define SAVE_NVGPRS(base)		SAVE_GPRS(14, 31, base)
 #define REST_NVGPRS(base)		REST_GPRS(14, 31, base)
 #else
-#define SAVE_GPRS(start, end, base)	OP_REGS stw, 4, start, end, base, GPR0
-#define REST_GPRS(start, end, base)	OP_REGS lwz, 4, start, end, base, GPR0
+.macro __SAVE_GPRS start, end, base, offset
+	.if \end == 31
+		stmw	\start,\offset(\base)
+	.else
+		OP_REGS stw, 4, \start, \end, \base, \offset
+	.endif
+.endm
+.macro __REST_GPRS start, end, base, offset
+	.if \end == 31
+		lmw	\start,\offset(\base)
+	.else
+		OP_REGS lwz, 4, \start, \end, \base, \offset
+	.endif
+.endm
+#define SAVE_GPRS(start, end, base)	__SAVE_GPRS start, end, base, GPR0
+#define REST_GPRS(start, end, base)	__REST_GPRS start, end, base, GPR0
 #define SAVE_NVGPRS(base)		SAVE_GPRS(13, 31, base)
 #define REST_NVGPRS(base)		REST_GPRS(13, 31, base)
 #endif
-- 
2.37.2


  parent reply	other threads:[~2022-10-31  6:00 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-31  5:54 [RFC PATCH 00/19] Remove STACK_FRAME_OVERHEAD Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 01/19] powerpc/perf: callchain validate kernel stack pointer bounds Nicholas Piggin
2022-11-04 13:10   ` Segher Boessenkool
2022-10-31  5:54 ` [RFC PATCH 02/19] powerpc: Rearrange copy_thread child stack creation Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 03/19] powerpc/64: Remove asm interrupt tracing call helpers Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 04/19] powerpc/pseries: hvcall stack frame overhead Nicholas Piggin
2022-10-31  5:54 ` Nicholas Piggin [this message]
2022-11-03  8:26   ` [RFC PATCH 05/19] powerpc/32: Use load and store multiple in GPR save/restore macros Christophe Leroy
2022-11-07 12:45     ` Nicholas Piggin
2022-11-07 12:51       ` Christophe Leroy
2022-10-31  5:54 ` [RFC PATCH 06/19] powerpc: simplify ppc_save_regs Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 07/19] powerpc: add definition for pt_regs offset within an interrupt frame Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 08/19] powerpc: add a definition for the marker offset within the " Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 09/19] powerpc: Rename STACK_FRAME_MARKER and derive it from frame offset Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 10/19] powerpc: add a define for the user interrupt frame size Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 11/19] powerpc: add a define for the switch frame size and regs offset Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 12/19] powerpc: copy_thread fill in interrupt frame marker and back chain Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 13/19] powerpc: copy_thread add a back chain to the switch stack frame Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 14/19] powerpc: split validate_sp into two functions Nicholas Piggin
2022-11-07  0:58   ` Russell Currey
2022-11-07 12:29     ` Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 15/19] powerpc: allow minimum sized kernel stack frames Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 16/19] powerpc/64: ELFv2 use minimal stack frames in int and switch frame sizes Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 17/19] powerpc: remove STACK_FRAME_OVERHEAD Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 18/19] powerpc: change stack marker memory operations to 32-bit Nicholas Piggin
2022-10-31  5:54 ` [RFC PATCH 19/19] powerpc/64: ELFv2 use reserved word in the stack frame for the regs marker Nicholas Piggin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20221031055440.3594315-6-npiggin@gmail.com \
    --to=npiggin@gmail.com \
    --cc=linuxppc-dev@lists.ozlabs.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.