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3f2829a315
linux/include/asm-arm
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Nicolas Pitre 3f2829a315 [ARM] 3105/4: ARM EABI: new syscall entry convention 
Patch from Nicolas Pitre

For a while we wanted to change the way syscalls were called on ARM.
Instead of encoding the syscall number in the swi instruction which
requires reading back the instruction from memory to extract that number
and polluting the data cache, it was decided that simply storing the
syscall number into r7 would be more efficient. Since this represents
an ABI change then making that change at the same time as EABI support
is the right thing to do.

It is now expected that EABI user space binaries put the syscall number
into r7 and use "swi 0" to call the kernel. Syscall register argument
are also expected to have "EABI arrangement" i.e. 64-bit arguments
should be put in a pair of registers from an even register number.

Example with long ftruncate64(unsigned int fd, loff_t length):

	legacy ABI:
	- put fd into r0
	- put length into r1-r2
	- use "swi #(0x900000 + 194)" to call the kernel

	new ARM EABI:
	- put fd into r0
	- put length into r2-r3 (skipping over r1)
	- put 194 into r7
	- use "swi 0" to call the kernel

Note that it is important to use 0 for the swi argument as backward
compatibility with legacy ABI user space relies on this.
The syscall macros in asm-arm/unistd.h were also updated to support
both ABIs and implement the right call method automatically.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-14 16:31:29 +00:00
..
arch-aaec2000 [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-at91rm9200 [ARM] 3242/2: AT91RM9200 support for 2.6 (Serial) 2006-01-10 16:59:27 +00:00
arch-cl7500 [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-clps711x [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-ebsa110 [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-ebsa285 [ARM] Move common definition of MAX_DMA_ADDRESS to asm/dma.h 2006-01-04 15:30:48 +00:00
arch-h720x [ARM] Include asm/hardware.h instead of asm/arch/hardware.h 2005-11-16 14:51:20 +00:00
arch-imx [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-integrator [ARM] Move AMBA include files to include/linux/amba/ 2006-01-07 13:52:45 +00:00
arch-iop3xx [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-ixp4xx [ARM] 3226/1: IXP4xx runtime expansion bus window size configuration 2006-01-05 20:59:29 +00:00
arch-ixp2000 [ARM] 3257/1: ixp2000: map in scratch and sram 2006-01-13 20:51:43 +00:00
arch-l7200 [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-lh7a40x [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-omap [ARM] Move asm/hardware/clock.h to linux/clk.h 2006-01-07 16:15:52 +00:00
arch-pxa Merge with Linus' kernel. 2006-01-07 14:40:05 +00:00
arch-realview [ARM] Move AMBA include files to include/linux/amba/ 2006-01-07 13:52:45 +00:00
arch-rpc [ARM] Cleanup ARM includes 2006-01-03 17:39:34 +00:00
arch-s3c2410 [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-sa1100 [ARM] Remove definition of MAX_DMA_CHANNELS to zero 2006-01-04 15:51:51 +00:00
arch-shark [ARM] 3060/1: allow constants found in asm/memory.h to be used in asm code 2005-10-29 21:44:55 +01:00
arch-versatile [ARM] Separate VIC (vectored interrupt controller) support from Versatile 2006-01-13 21:30:48 +00:00
hardware [ARM] Separate VIC (vectored interrupt controller) support from Versatile 2006-01-13 21:30:48 +00:00
mach [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
a.out.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
apm.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
assembler.h [ARM] Clean up save_and_disable_irqs macro and allow use of ARMv6 CPSID 2005-11-09 15:04:22 +00:00
atomic.h [PATCH] mutex subsystem, add atomic_xchg() to all arches 2006-01-09 15:59:17 -08:00
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h [FLS64]: generic version 2006-01-03 13:11:06 -08:00
bug.h [PATCH] qualifiers in return types - easy cases 2005-08-23 18:43:45 -07:00
bugs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
byteorder.h [ARM] 3252/1: help gcc do the best with ___arch__swab32 2006-01-10 19:48:02 +00:00
cache.h [PATCH] Kill L1_CACHE_SHIFT_MAX 2006-01-08 20:13:39 -08:00
cacheflush.h [ARM] Cleanup ARM includes 2006-01-03 17:39:34 +00:00
checksum.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu-multi32.h [PATCH] qualifiers in return types - easy cases 2005-08-23 18:43:45 -07:00
cpu-single.h [PATCH] qualifiers in return types - easy cases 2005-08-23 18:43:45 -07:00
cpu.h [ARM SMP] Track CPU idle threads 2005-11-02 21:51:40 +00:00
cputime.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
current.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
delay.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
div64.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dma-mapping.h [PATCH] gfp_t: dma-mapping (arm) 2005-10-28 08:16:47 -07:00
dma.h [ARM] Move common definition of MAX_DMA_ADDRESS to asm/dma.h 2006-01-04 15:30:48 +00:00
domain.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ecard.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
elf.h [ARM] 3205/1: Handle new EABI relocations when loading kernel modules. 2005-12-14 22:04:22 +00:00
emergency-restart.h [PATCH] Add emergency_restart() 2005-07-26 14:35:41 -07:00
errno.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fcntl.h [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
fiq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
floppy.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fpstate.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
futex.h [PATCH] consolidate asm/futex.h 2006-01-08 20:13:39 -08:00
glue.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hardirq.h [ARM SMP] Add core ARM support for local timers 2005-11-08 19:08:05 +00:00
hardware.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ide.h [PATCH] ARM: 2758/1: Fix comment in file header to read "ARM" instead i386 2005-06-27 15:58:39 +01:00
io.h [ARM] 3070/2: Add __ioremap_pfn() API 2006-01-09 19:23:11 +00:00
ioctl.h [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
ioctls.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipcbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.h [PATCH] IRQ type flags 2006-01-08 20:13:46 -08:00
kmap_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
leds.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
limits.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
linkage.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
local.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
locks.h [ARM] 3019/1: fix wrong comments 2005-10-18 07:51:34 +01:00
mc146818rtc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
memory.h [ARM] 3209/1: Configurable DMA-consistent memory region 2006-01-12 16:12:21 +00:00
mman.h [PATCH] madvise(MADV_REMOVE): remove pages from tmpfs shm backing store 2006-01-06 08:33:22 -08:00
mmu_context.h [ARM] Add linux/compiler.h includes where required 2005-11-16 17:23:57 +00:00
mmu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmzone.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
msgbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mtd-xip.h [MTD] XIP cleanup 2005-07-07 16:50:16 +02:00
mutex.h [PATCH] mutex subsystem, add include/asm-arm/mutex.h 2006-01-09 15:59:18 -08:00
namei.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
numnodes.h [ARM] Add asm/memory.h to asm/numnodes.h 2005-11-21 15:26:18 +00:00
nwflash.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
page.h [ARM] 3101/1: ARM EABI: slab memory must be 64-bit aligned 2006-01-14 16:18:07 +00:00
param.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
parport.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.h [PATCH] Make sparc64 use setup-res.c 2005-09-08 14:57:25 -07:00
percpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgalloc.h [PATCH] ARM: Factor out common pmd_populate functionality 2005-06-22 20:58:29 +01:00
pgtable.h [PATCH] vm: remove unused/broken page_pte[_prot] macros 2005-10-30 17:37:22 -08:00
poll.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
posix_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
proc-fns.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
processor.h [ARM] start_thread fixup for nommu mode 2006-01-13 21:04:17 +00:00
procinfo.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ptrace.h [ARM] 3102/1: ARM EABI: stack pointer must be 64-bit aligned after a CPU exception 2006-01-14 16:18:08 +00:00
resource.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rtc.h [PATCH] ARM: RTC: allow driver methods to return error 2005-04-30 12:19:28 +01:00
scatterlist.h [ARM] Remove '__address' from scatterlist and convert to DMA API 2006-01-04 15:08:30 +00:00
sections.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
segment.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore-helper.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore.h [ARM] sema_count() removal 2005-12-01 20:58:01 +00:00
sembuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
serial.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.h [ARM] 2925/3: earlyparam - postfix section with .init for make buildcheck 2005-09-20 16:25:12 +01:00
shmbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmparam.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sigcontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
siginfo.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
signal.h [ARM] Remove SA_IRQNOMASK 2005-09-26 15:30:20 +01:00
sizes.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smp.h [ARM SMP] Add core ARM support for local timers 2005-11-08 19:08:05 +00:00
socket.h [NET]: Introduce SO_{SND,RCV}BUFFORCE socket options 2005-08-29 15:31:35 -07:00
sockios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlock_types.h [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
spinlock.h [ARM SMP] Use event instructions for spinlocks 2005-12-01 15:47:24 +00:00
stat.h [PATCH] ARM: Fix new-ABI layout of struct stat64 2005-07-04 13:02:46 +01:00
statfs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
string.h [PATCH] ARM: 2653/1: Fix memset and memzero macro double-reference of parameters 2005-04-25 23:40:05 +01:00
suspend.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
system.h [PATCH] arm: task_thread_info() 2006-01-12 09:08:55 -08:00
termbits.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
termios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
therm.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
thread_info.h [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
timex.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlb.h [PATCH] mm: tlb_finish_mmu forget rss 2005-10-29 21:40:37 -07:00
tlbflush.h [PATCH] ARM SMP: TLB implementations only affect local CPU 2005-06-28 13:40:39 +01:00
topology.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
traps.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
types.h [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
uaccess.h [ARM] Fix get_user when passed a const pointer 2005-11-18 14:22:03 +00:00
ucontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unaligned.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unistd.h [ARM] 3105/4: ARM EABI: new syscall entry convention 2006-01-14 16:31:29 +00:00
user.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vfp.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vfpmacros.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vga.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xor.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00