From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org,
rusty@rustcorp.com.au, ulrich.weigand@de.ibm.com,
amodra@gmail.com, mikey@neuling.org, mjw@linux.vnet.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 03/33] powerpc: Don't use a function descriptor for system call table
Date: Tue, 25 Mar 2014 22:44:09 +1100 [thread overview]
Message-ID: <1395747879-5948-4-git-send-email-anton@samba.org> (raw)
In-Reply-To: <1395747879-5948-1-git-send-email-anton@samba.org>
There is no need to create a function descriptor for the system call
table. By using one we force the system call table into the text
section and it really belongs in the rodata section.
This also removes another use of dot symbols.
Signed-off-by: Anton Blanchard <anton@samba.org>
---
arch/powerpc/kernel/entry_64.S | 6 +++---
arch/powerpc/kernel/systbl.S | 6 +++++-
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 2d92eeb..2662f02 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -39,8 +39,8 @@
* System calls.
*/
.section ".toc","aw"
-.SYS_CALL_TABLE:
- .tc .sys_call_table[TC],.sys_call_table
+SYS_CALL_TABLE:
+ .tc sys_call_table[TC],sys_call_table
/* This value is used to mark exception frames on the stack. */
exception_marker:
@@ -162,7 +162,7 @@ system_call: /* label this so stack traces look sane */
* Need to vector to 32 Bit or default sys_call_table here,
* based on caller's run-mode / personality.
*/
- ld r11,.SYS_CALL_TABLE@toc(2)
+ ld r11,SYS_CALL_TABLE@toc(2)
andi. r10,r10,_TIF_32BIT
beq 15f
addi r11,r11,8 /* use 32-bit syscall entries */
diff --git a/arch/powerpc/kernel/systbl.S b/arch/powerpc/kernel/systbl.S
index 93219c3..75822f9 100644
--- a/arch/powerpc/kernel/systbl.S
+++ b/arch/powerpc/kernel/systbl.S
@@ -36,6 +36,8 @@
#define PPC_SYS_SPU(func) PPC_SYS(func)
#define SYSX_SPU(f, f3264, f32) SYSX(f, f3264, f32)
+.section .rodata,"a"
+
#ifdef CONFIG_PPC64
#define sys_sigpending sys_ni_syscall
#define sys_old_getrlimit sys_ni_syscall
@@ -43,5 +45,7 @@
.p2align 3
#endif
-_GLOBAL(sys_call_table)
+.globl sys_call_table
+sys_call_table:
+
#include <asm/systbl.h>
--
1.8.3.2
next prev parent reply other threads:[~2014-03-25 11:44 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-25 11:44 [PATCH 00/33] Build ppc64le kernel using ABIv2 Anton Blanchard
2014-03-25 11:44 ` [PATCH 01/33] powerpc: No need to use dot symbols when branching to a function Anton Blanchard
2014-03-25 11:44 ` [PATCH 02/33] powerpc: Remove superflous function descriptors in assembly only code Anton Blanchard
2014-03-25 11:44 ` Anton Blanchard [this message]
2014-03-25 11:44 ` [PATCH 04/33] powerpc: Remove some unnecessary uses of _GLOBAL() and _STATIC() Anton Blanchard
2014-03-25 11:44 ` [PATCH 05/33] powerpc: Remove _INIT_GLOBAL(), _STATIC() and _INIT_STATIC() Anton Blanchard
2014-03-25 11:44 ` [PATCH 06/33] powerpc: Remove dot symbol usage in exception macros Anton Blanchard
2014-03-25 11:44 ` [PATCH 07/33] powerpc: Create DOTSYM to wrap dot symbol usage Anton Blanchard
2014-03-25 11:44 ` [PATCH 08/33] powerpc: Remove function descriptors and dot symbols on new ABI Anton Blanchard
2014-03-25 11:44 ` [PATCH 09/33] powerpc: ABIv2 function calls must place target address in r12 Anton Blanchard
2014-03-25 11:44 ` [PATCH 10/33] powerpc: Ignore TOC relocations Anton Blanchard
2014-03-26 9:36 ` Alan Modra
2014-04-22 22:02 ` Anton Blanchard
2014-03-25 11:44 ` [PATCH 11/33] powerpc: Add ABIv2 support to ppc_function_entry Anton Blanchard
2014-03-25 11:44 ` [PATCH 12/33] powerpc: Use ppc_function_entry instead of open coding it Anton Blanchard
2014-03-25 11:44 ` [PATCH 13/33] powerpc: Fix branch patching code for ABIv2 Anton Blanchard
2014-03-25 11:44 ` [PATCH 14/33] powerpc: Fix kernel thread creation on ABIv2 Anton Blanchard
2014-03-25 11:44 ` [PATCH 15/33] powerpc: Fix ABIv2 issues with stack offsets in assembly code Anton Blanchard
2014-03-26 10:04 ` Alan Modra
2014-03-26 10:06 ` Alan Modra
2014-04-01 13:54 ` Philippe Bergheaud
2014-03-25 11:44 ` [PATCH 16/33] powerpc: Fix unsafe accesses to parameter area in ELFv2 Anton Blanchard
2014-03-25 11:44 ` [PATCH 17/33] powerpc/tm: Use STK_PARAM Anton Blanchard
2014-03-25 11:44 ` [PATCH 18/33] powerpc/tm: Fix GOT save offset for ABIv2 Anton Blanchard
2014-03-25 11:44 ` [PATCH 19/33] powerpc/tracing: TRACE_WITH_FRAME_BUFFER creates invalid stack frames Anton Blanchard
2014-03-25 11:44 ` [PATCH 20/33] powerpc: Fix SMP issues with ppc64le ABIv2 Anton Blanchard
2014-03-25 11:44 ` [PATCH 21/33] powerpc: Fix ABIv2 issue with dereference_function_descriptor Anton Blanchard
2014-03-25 11:44 ` [PATCH 22/33] powerpc: make module stub code endian independent Anton Blanchard
2014-03-25 11:44 ` [PATCH 23/33] powerpc: modules implement R_PPC64_TOCSAVE relocation Anton Blanchard
2014-03-25 11:44 ` [PATCH 24/33] powerpc: EXPORT_SYMBOL(.TOC.) Anton Blanchard
2014-03-25 11:44 ` [PATCH 25/33] powerpc: module: handle MODVERSION for .TOC Anton Blanchard
2014-03-25 11:44 ` [PATCH 26/33] powerpc: Fix up TOC. for modules Anton Blanchard
2014-03-25 11:44 ` [PATCH 27/33] powerpc: Handle new ELFv2 module relocations Anton Blanchard
2014-03-26 10:28 ` Alan Modra
2014-03-25 11:44 ` [PATCH 28/33] powerpc: modules: comment about de-dotifying symbols when using the ELFv2 ABI Anton Blanchard
2014-03-25 11:44 ` [PATCH 29/33] powerpc: modules: change r2 save/restore offset for " Anton Blanchard
2014-03-25 11:44 ` [PATCH 30/33] powerpc: modules: use r12 for stub jump address Anton Blanchard
2014-03-25 11:44 ` [PATCH 31/33] powerpc: modules: skip r2 setup for ELFv2 Anton Blanchard
2014-03-25 11:44 ` [PATCH 32/33] powerpc: modules: implement stubs for ELFv2 ABI Anton Blanchard
2014-03-25 11:44 ` [PATCH 33/33] powerpc: Build little endian ppc64 kernel with ABIv2 Anton Blanchard
2014-03-25 13:18 ` [PATCH 00/33] Build ppc64le kernel using ABIv2 Ulrich Weigand
2014-03-26 11:20 ` Anton Blanchard
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