Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (236 commits)
  [ARM] 5300/1: fixup spitz reset during boot
  [ARM] 5295/1: make ZONE_DMA optional
  [ARM] 5239/1: Palm Zire 72 power management support
  [ARM] 5298/1: Drop desc_handle_irq()
  [ARM] 5297/1: [KS8695] Fix two compile-time warnings
  [ARM] 5296/1: [KS8695] Replace macro's with trailing underscores.
  [ARM] pxa: allow multi-machine PCMCIA builds
  [ARM] pxa: add preliminary CPUFREQ support for PXA3xx
  [ARM] pxa: add missing ACCR bit definitions to pxa3xx-regs.h
  [ARM] pxa: rename cpu-pxa.c to cpufreq-pxa2xx.c
  [ARM] pxa/zylonite: add support for USB OHCI
  [ARM] ohci-pxa27x: use ioremap() and offset for register access
  [ARM] ohci-pxa27x: introduce pxa27x_clear_otgph()
  [ARM] ohci-pxa27x: use platform_get_{irq,resource} for the resource
  [ARM] ohci-pxa27x: move OHCI controller specific registers into the driver
  [ARM] ohci-pxa27x: introduce flags to avoid direct access to OHCI registers
  [ARM] pxa: move I2S register and bit definitions into pxa2xx-i2s.c
  [ARM] pxa: simplify DMA register definitions
  [ARM] pxa: make additional DCSR bits valid for PXA3xx
  [ARM] pxa: move i2c register and bit definitions into i2c-pxa.c
  ...

Fixed up conflicts in
	arch/arm/mach-versatile/core.c
	sound/soc/pxa/pxa2xx-ac97.c
	sound/soc/pxa/pxa2xx-i2s.c
manually.

1 files changed, 79 insertions, 0 deletions

diff --git a/arch/arm/kernel/elf.c b/arch/arm/kernel/elf.c
new file mode 100644
index 00000000000..513f332f040
--- /dev/null
+++ b/arch/arm/kernel/elf.c
@@ -0,0 +1,79 @@
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/personality.h>
+#include <linux/binfmts.h>
+#include <linux/elf.h>
+
+int elf_check_arch(const struct elf32_hdr *x)
+{
+	unsigned int eflags;
+
+	/* Make sure it's an ARM executable */
+	if (x->e_machine != EM_ARM)
+		return 0;
+
+	/* Make sure the entry address is reasonable */
+	if (x->e_entry & 1) {
+		if (!(elf_hwcap & HWCAP_THUMB))
+			return 0;
+	} else if (x->e_entry & 3)
+		return 0;
+
+	eflags = x->e_flags;
+	if ((eflags & EF_ARM_EABI_MASK) == EF_ARM_EABI_UNKNOWN) {
+		/* APCS26 is only allowed if the CPU supports it */
+		if ((eflags & EF_ARM_APCS_26) && !(elf_hwcap & HWCAP_26BIT))
+			return 0;
+
+		/* VFP requires the supporting code */
+		if ((eflags & EF_ARM_VFP_FLOAT) && !(elf_hwcap & HWCAP_VFP))
+			return 0;
+	}
+	return 1;
+}
+EXPORT_SYMBOL(elf_check_arch);
+
+void elf_set_personality(const struct elf32_hdr *x)
+{
+	unsigned int eflags = x->e_flags;
+	unsigned int personality = PER_LINUX_32BIT;
+
+	/*
+	 * APCS-26 is only valid for OABI executables
+	 */
+	if ((eflags & EF_ARM_EABI_MASK) == EF_ARM_EABI_UNKNOWN) {
+		if (eflags & EF_ARM_APCS_26)
+			personality = PER_LINUX;
+	}
+
+	set_personality(personality);
+
+	/*
+	 * Since the FPA coprocessor uses CP1 and CP2, and iWMMXt uses CP0
+	 * and CP1, we only enable access to the iWMMXt coprocessor if the
+	 * binary is EABI or softfloat (and thus, guaranteed not to use
+	 * FPA instructions.)
+	 */
+	if (elf_hwcap & HWCAP_IWMMXT &&
+	    eflags & (EF_ARM_EABI_MASK | EF_ARM_SOFT_FLOAT)) {
+		set_thread_flag(TIF_USING_IWMMXT);
+	} else {
+		clear_thread_flag(TIF_USING_IWMMXT);
+	}
+}
+EXPORT_SYMBOL(elf_set_personality);
+
+/*
+ * Set READ_IMPLIES_EXEC if:
+ *  - the binary requires an executable stack
+ *  - we're running on a CPU which doesn't support NX.
+ */
+int arm_elf_read_implies_exec(const struct elf32_hdr *x, int executable_stack)
+{
+	if (executable_stack != EXSTACK_ENABLE_X)
+		return 1;
+	if (cpu_architecture() <= CPU_ARCH_ARMv6)
+		return 1;
+	return 0;
+}
+EXPORT_SYMBOL(arm_elf_read_implies_exec);