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Maciej W. Rozycki 82b89152f0 MIPS: LD/SD o32 macro GAS fix update 
I am about to commit:

http://sourceware.org/ml/binutils/2010-10/msg00033.html

that fixes a problem with the LD/SD macro currently implemented by GAS for
the o32 ABI in an inconsistent way.  This is best illustrated with a
simple program, which I'm copying here from the message above for easier
reference:

$ cat ld.s
	ld	$5,32767($4)
	ld	$5,32768($4)

This gets assebled into the following output:

$ mips-linux-as -32 -mips3 -o ld.o ld.s
$ mips-linux-objdump -d ld.o

ld.o:     file format elf32-tradbigmips

Disassembly of section .text:

00000000 <.text>:
   0:	dc857fff 	ld	a1,32767(a0)
   4:	3c010001 	lui	at,0x1
   8:	00810821 	addu	at,a0,at
   c:	8c258000 	lw	a1,-32768(at)
  10:	8c268004 	lw	a2,-32764(at)
	...

Oops!

 The GAS fix makes the macro behave in a consistent way and pairs of LW/SW
instructions to be output as appropriate regardless of the size of the
offset associated with the address used.  The machine instruction is still
available, but to reach it macros have to be disabled first.  This has a
side effect of requiring the use of a machine-addressable memory operand.

 As some platforms require 64-bit operations for accesses to some I/O
registers LD/SD instructions are used in a couple of places in Linux
regardless of the ABI selected.  Here's a fix for some pieces of code
affected I've been able to track down.  The fix should be backwards
compatible with all supported binutils releases in existence and can be
used as a reference for any other places or off-tree code.  The use of the
"R" constraint guarantees a machine-addressable operand.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1680/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-12-16 18:11:01 +00:00
..
dec MIPS: Make various locks static. 2010-02-27 12:53:30 +01:00
emma MIPS: EMMA2RH: Replace EMMA2RH_SW_IRQ_INTxx with EMMA2RH_SW_IRQ(n) 2010-08-05 13:26:04 +01:00
fw
ip32
lasat MIPS: Lasat: Fix compilation 2009-09-17 20:07:42 +02:00
mach-ar7 MIPS: AR7: Fix loops per jiffies on TNETD7200 devices 2010-12-16 18:10:56 +00:00
mach-au1x00 MIPS: au1000_eth: Get ethernet address from platform_data 2010-08-05 13:26:09 +01:00
mach-bcm47xx MIPS: BCM47xx: Use sscanf for parsing mac address 2010-12-16 18:10:59 +00:00
mach-bcm63xx mtd: add Broadcom BCM63xx image tag partition parser 2010-10-25 00:13:05 +01:00
mach-cavium-octeon MIPS: Octeon: Enable Read Inhibit / eXecute Inhibit on Octeon II. 2010-10-29 19:08:38 +01:00
mach-cobalt Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
mach-db1x00 MIPS: Alchemy: Extended DB1200 board support. 2010-02-27 12:53:00 +01:00
mach-dec
mach-emma2rh
mach-generic dma-mapping: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN 2010-08-11 08:59:21 -07:00
mach-ip22
mach-ip27 MIPS: Convert DMA to use dma-mapping-common.h 2010-10-29 19:08:31 +01:00
mach-ip28
mach-ip32 MIPS: Convert DMA to use dma-mapping-common.h 2010-10-29 19:08:31 +01:00
mach-jazz MIPS: Convert DMA to use dma-mapping-common.h 2010-10-29 19:08:31 +01:00
mach-jz4740 MMC: Add support for the controller on JZ4740 SoCs. 2010-08-05 13:26:18 +01:00
mach-lasat
mach-loongson MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
mach-malta MIPS: Malta: Remove pointless use use of CONFIG_CPU_HAS_LLSC 2009-09-17 20:07:49 +02:00
mach-mipssim
mach-pb1x00 MIPS: Remove dead CONFIG_MTD_PB1550_BOOT, CONFIG_MTD_PB1550_USER 2010-08-05 13:26:00 +01:00
mach-pnx833x MIPS: Nuke trailing blank lines 2010-02-27 12:53:14 +01:00
mach-pnx8550
mach-powertv MIPS: PowerTV: Separate PowerTV USB support from non-USB code 2010-08-05 13:26:34 +01:00
mach-rc32434 MIPS: RB532: Cleanup cpu-features-overrides 2009-06-17 11:06:26 +01:00
mach-rm
mach-sibyte MIPS: Sibyte: Apply M3 workaround only on affected chip types and versions. 2010-04-12 17:26:19 +01:00
mach-tx39xx
mach-tx49xx MIPS: TX49xx: Rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN 2010-10-04 18:33:58 +01:00
mach-vr41xx
mach-wrppmc
mach-yosemite
mips-boards MIPS: GIC: Remove dependencies from Malta files. 2010-10-04 18:33:56 +01:00
octeon MIPS: Octeon: Add register definitions for EHCI / OHCI USB glue logic. 2010-10-29 19:08:43 +01:00
pci mips: remove dma64_addr_t usage 2010-10-27 18:03:17 -07:00
pmc-sierra/msp71xx MIPS: MSP71xx: Remove dead CONFIG_MTD_PMC_MSP_RAMROOT 2010-08-05 13:26:01 +01:00
sgi tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
sibyte MIPS: Nuke trailing blank lines 2010-02-27 12:53:14 +01:00
sn MIPS: IP27: Don't include <linux/topology.h> into <asm/sn/agent.h>. 2010-08-05 13:25:38 +01:00
txx9 MIPS: TXx9: Remove forced serial console setting 2010-02-27 12:53:22 +01:00
vr41xx Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
xtalk
abi.h MIPS: Move signal trampolines off of the stack. 2010-04-12 17:26:15 +01:00
addrspace.h
amon.h MIPS: CMP: activate CMP support 2009-07-03 15:45:26 +01:00
arch_hweight.h MIPS: Create and use asm/arch_hweight.h 2010-08-05 13:26:02 +01:00
asm-offsets.h kbuild: move asm-offsets.h to include/generated 2009-12-12 13:08:14 +01:00
asm.h
asmmacro-32.h
asmmacro-64.h
asmmacro.h
atomic.h MIPS: Get rid of branches to .subsections. 2010-10-29 19:08:24 +01:00
auxvec.h
barrier.h MIPS: Optimize spinlocks. 2010-02-27 12:53:42 +01:00
bcache.h
bitops.h MIPS: Get rid of branches to .subsections. 2010-10-29 19:08:24 +01:00
bitsperlong.h asm-generic: introduce asm/bitsperlong.h 2009-06-11 21:02:14 +02:00
bootinfo.h MIPS: Add a platform hook for swiotlb setup. 2010-10-29 19:08:32 +01:00
branch.h
break.h MIPS: kprobe: Add support. 2010-08-05 13:26:29 +01:00
bug.h MIPS: Convert BUG() to use unreachable() 2009-12-05 09:10:12 -08:00
bugs.h MIPS: Build fix - include <linux/smp.h> into all smp_processor_id() users. 2009-06-24 18:34:39 +01:00
byteorder.h
cache.h
cachectl.h
cacheflush.h block: add helpers to run flush_dcache_page() against a bio and a request's pages 2009-11-26 09:16:19 +01:00
cacheops.h MIPS: RM7000: Add support for tertiary cache 2010-08-05 13:26:06 +01:00
cevt-r4k.h
checksum.h MIPS: uaccess: Switch lock annotations to might_fault(). 2009-05-14 13:50:28 +01:00
clock.h MIPS: Loongson 2F: Add CPU frequency scaling support 2009-12-17 01:57:20 +00:00
cmp.h
cmpxchg.h MIPS: Get rid of branches to .subsections. 2010-10-29 19:08:24 +01:00
compat-signal.h
compat.h compat: Make compat_alloc_user_space() incorporate the access_ok() 2010-09-14 16:08:45 -07:00
compiler.h
cop2.h MIPS: Don't place cu2 notifiers in __cpuinitdata 2010-10-04 18:34:00 +01:00
cpu-features.h MIPS: Update comment for cpu_has_clo_clz 2010-08-05 13:26:01 +01:00
cpu-info.h MIPS: 64-bit: Detect virtual memory size 2010-02-02 19:56:23 +01:00
cpu.h MIPS: Fix regression on BCM4710 processor detection 2010-12-16 18:10:58 +00:00
cputime.h
current.h MIPS: Use generic current.h 2010-02-27 12:53:27 +01:00
debug.h
delay.h MIPS: Fix potencial build error in <asm/delay.h> 2009-09-17 20:07:41 +02:00
device.h MIPS: Convert DMA to use dma-mapping-common.h 2010-10-29 19:08:31 +01:00
div64.h MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0. 2009-05-14 13:50:29 +01:00
dma-mapping.h MIPS: Convert DMA to use dma-mapping-common.h 2010-10-29 19:08:31 +01:00
dma.h MIPS: Allow MAX_DMA32_PFN to be overridden. 2010-10-29 19:08:28 +01:00
ds1287.h Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
dsp.h
edac.h
elf.h MIPS: Don't clobber personality high bits. 2010-12-16 18:10:54 +00:00
emergency-restart.h
errno.h cfg80211: errno.h: define ERFKILL 2009-06-07 05:01:00 -07:00
fb.h
fcntl.h MIPS: 32-bit: Fix build failure in asm/fcntl.h 2010-10-18 16:59:04 +01:00
fixmap.h MIPS: Fix machine check exception in kmap_coherent() 2009-11-02 12:00:04 +01:00
floppy.h
fpregdef.h
fpu.h MIPS: Cleanup signal code initialization 2009-12-17 01:57:32 +00:00
fpu_emulator.h MIPS: Fix build breakage if CONFIG_DEBUG_FS is enabled. 2010-04-12 17:26:08 +01:00
ftrace.h MIPS: Loongson: Change the Email address of Wu Zhangjin 2010-02-27 12:53:12 +01:00
futex.h
gcmpregs.h MIPS: GIC: Random fixes and enhancements. 2009-11-02 12:00:06 +01:00
gic.h MIPS: GIC: Remove dependencies from Malta files. 2010-10-04 18:33:56 +01:00
gpio.h
gt64120.h
hardirq.h MIPS: Convert to asm-generic/hardirq.h 2009-09-17 20:07:48 +02:00
hazards.h MIPS: Alchemy: remove SOC_AU1X00 in favor of MIPS_ALCHEMY 2010-08-05 13:26:06 +01:00
highmem.h mm: stack based kmap_atomic() 2010-10-26 16:52:08 -07:00
hugetlb.h MIPS: Add support files for hugetlbfs. 2009-06-17 11:06:30 +01:00
hw_irq.h
i8253.h i8253: Convert i8253_lock to raw_spinlock 2010-03-02 10:28:38 +01:00
i8259.h MIPS: i8259: Convert IRQ controller lock to raw spinlock. 2010-02-27 12:53:38 +01:00
ide.h
inst.h MIPS: Add instrunction format for BREAK and SYSCALL 2010-08-05 13:26:28 +01:00
io.h MIPS: LD/SD o32 macro GAS fix update 2010-12-16 18:11:01 +00:00
ioctl.h MIPS: ioctl.h: Cleanup. 2009-06-17 11:06:28 +01:00
ioctls.h tty: Add EXTPROC support for LINEMODE 2010-08-10 13:47:39 -07:00
ipcbuf.h
irq.h of/mips: Add device tree support to MIPS 2010-10-21 11:10:10 -06:00
irq_cpu.h
irq_gt641xx.h Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
irq_regs.h
irqflags.h Fix IRQ flag handling naming 2010-10-07 14:08:55 +01:00
isadep.h
jazz.h
jazzdma.h
Kbuild
kdebug.h MIPS: kprobe: Add support. 2010-08-05 13:26:29 +01:00
kexec.h
kgdb.h kgdb,mips: Individual register get/set for mips 2010-08-05 09:22:21 -05:00
kmap_types.h kmap_types: make most arches use generic header file 2009-06-16 19:47:51 -07:00
kprobes.h MIPS: kprobe: Add support. 2010-08-05 13:26:29 +01:00
kspd.h
linkage.h
local.h MIPS: define local_xchg from xchg_local to atomic_long_xchg 2010-10-29 19:08:47 +01:00
local64.h arch: Implement local64_t 2010-06-09 11:12:36 +02:00
m48t37.h
mc146818-time.h
mc146818rtc.h
mips_mt.h
mipsmtregs.h
mipsprom.h
mipsregs.h MIPS: Add BMIPS CP0 register definitions 2010-10-29 19:08:52 +01:00
mman.h MIPS: Add missing definition for MADV_HWPOISON. 2009-12-01 16:21:25 +00:00
mmu.h MIPS: Preliminary VDSO 2010-04-12 17:26:14 +01:00
mmu_context.h MIPS: Preliminary VDSO 2010-04-12 17:26:14 +01:00
mmzone.h
module.h
msc01_ic.h MIPS: Nuke trailing blank lines 2010-02-27 12:53:14 +01:00
msgbuf.h
mutex.h
nile4.h MIPS: Nuke trailing blank lines 2010-02-27 12:53:14 +01:00
paccess.h
page.h MIPS: Document why RELOC_HIDE is there. 2010-10-04 18:33:55 +01:00
param.h MIPS: Simplify param.h by using <asm-generic/param.h> 2010-02-27 12:53:04 +01:00
parport.h MIPS: Use generic parport.h 2010-02-27 12:53:27 +01:00
pci.h MIPS: Octeon: Disallow MSI-X interrupt and fall back to MSI interrupts. 2010-08-05 13:26:27 +01:00
percpu.h
perf_event.h MIPS: add support for hardware performance events (skeleton) 2010-10-29 19:08:48 +01:00
pgalloc.h MIPS: Two-level pagetables for 64-bit kernels with 64KB pages. 2010-02-27 12:53:03 +01:00
pgtable-32.h mm: remove pte_*map_nested() 2010-10-26 16:52:08 -07:00
pgtable-64.h MIPS: Make TASK_SIZE reflect proper size for both 32 and 64 bit processes. 2010-10-29 19:08:53 +01:00
pgtable-bits.h MIPS: Implement Read Inhibit/eXecute Inhibit 2010-02-27 12:53:26 +01:00
pgtable.h Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-03-01 09:15:15 -08:00
pmon.h
poll.h
posix_types.h
prefetch.h
processor.h MIPS: Make TASK_SIZE reflect proper size for both 32 and 64 bit processes. 2010-10-29 19:08:53 +01:00
prom.h of/mips: Cleanup some include directives/files. 2010-10-21 11:10:11 -06:00
ptrace.h MIPS: kprobes: Define regs_return_value() 2010-08-05 13:26:28 +01:00
r4k-timer.h
r4kcache.h MIPS: Support 64-byte D-cache line size 2009-06-17 11:06:24 +01:00
reboot.h
reg.h MIPS: 64-bit: Fix o32 core dump 2009-07-03 15:45:27 +01:00
regdef.h
resource.h
rm9k-ocd.h
rtlx.h
scatterlist.h remove needless ISA_DMA_THRESHOLD 2010-08-07 18:15:50 +02:00
seccomp.h
sections.h
segment.h
sembuf.h
serial.h MIPS: Use generic serial.h 2010-02-27 12:53:27 +01:00
setup.h MIPS: Extend COMMAND_LINE_SIZE 2009-11-02 12:00:01 +01:00
sgialib.h MIPS: ARC: Cleanup unused definitions from sgialib.h 2010-02-27 12:53:45 +01:00
sgiarcs.h
sgidefs.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h Define _addr_lsb in siginfo_t for mips 2010-10-09 11:42:37 -07:00
signal.h asm-generic: rename termios.h, signal.h and mman.h 2009-06-11 21:01:52 +02:00
sim.h
smp-ops.h cpumask: arch_send_call_function_ipi_mask: mips 2009-09-24 09:34:45 +09:30
smp.h MIPS: SMP: Inline arch_send_call_function_{single_ipi,ipi_mask} 2009-09-30 21:47:00 +02:00
smtc.h
smtc_ipi.h MIPS: SMTC: Avoid queing multiple reschedule IPIs 2009-11-02 12:00:06 +01:00
smtc_proc.h
smvp.h
sni.h
socket.h net: Generalize socket rx gap / receive queue overflow cmsg 2009-10-12 13:26:31 -07:00
sockios.h
sparsemem.h MIPS: Nuke trailing blank lines 2010-02-27 12:53:14 +01:00
spinlock.h MIPS: Optimize spinlocks. 2010-02-27 12:53:42 +01:00
spinlock_types.h MIPS: Optimize spinlocks. 2010-02-27 12:53:42 +01:00
spram.h MIPS: SPRAM: Clean up support code a little 2009-11-02 12:00:05 +01:00
stackframe.h MIPS: Loongson-2F: Use CONFIG_CPU_JUMP_WORKAROUNDS to control workarounds. 2010-04-30 20:52:58 +01:00
stacktrace.h
stat.h
statfs.h add f_flags to struct statfs(64) 2010-08-09 16:48:44 -04:00
string.h
suspend.h MIPS: Add hibernation support 2009-06-17 11:06:31 +01:00
swab.h MIPS: Define __arch_swab64 for all mips r2 cpus 2009-07-03 15:45:25 +01:00
sysmips.h
system.h MIPS: Get rid of branches to .subsections. 2010-10-29 19:08:24 +01:00
termbits.h tty: Add EXTPROC support for LINEMODE 2010-08-10 13:47:39 -07:00
termios.h
thread_info.h MIPS: IRQ: Add stackoverflow detection 2010-10-29 19:08:27 +01:00
time.h mips: Use generic mult/shift factor calculation for clocks 2009-11-13 20:46:24 +01:00
timex.h
titan_dep.h
tlb.h
tlbdebug.h
tlbflush.h
topology.h
traps.h
txx9irq.h
txx9pio.h
txx9tmr.h
types.h asm-generic: introduce asm/bitsperlong.h 2009-06-11 21:02:14 +02:00
uaccess.h MIPS: Make TASK_SIZE reflect proper size for both 32 and 64 bit processes. 2010-10-29 19:08:53 +01:00
uasm.h MIPS: uasm: Add option to export uasm API. 2010-08-05 13:26:21 +01:00
ucontext.h MIPS: Use generic ucontext.h 2010-02-27 12:53:27 +01:00
unaligned.h MIPS: Avoid spurious make includecheck message 2009-09-30 21:47:02 +02:00
unistd.h MIPS: Hookup fanotify_init, fanotify_mark, and prlimit64 syscalls. 2010-10-04 18:33:59 +01:00
user.h
vdso.h MIPS: Preliminary VDSO 2010-04-12 17:26:14 +01:00
vga.h
vpe.h
war.h
watch.h
wbflush.h
xor.h