arm64: Assembly macros and definitions

This patch introduces several assembly macros and definitions used in
the .S files across arch/arm64/ like IRQ disabling/enabling, together
with asm-offsets.c.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c
new file mode 100644
index 000000000000..a2a4d810bea3
--- /dev/null
+++ b/arch/arm64/kernel/asm-offsets.c
@@ -0,0 +1,108 @@
+/*
+ * Based on arch/arm/kernel/asm-offsets.c
+ *
+ * Copyright (C) 1995-2003 Russell King
+ *               2001-2002 Keith Owens
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/dma-mapping.h>
+#include <asm/thread_info.h>
+#include <asm/memory.h>
+#include <asm/cputable.h>
+#include <asm/vdso_datapage.h>
+#include <linux/kbuild.h>
+
+int main(void)
+{
+  DEFINE(TSK_ACTIVE_MM,         offsetof(struct task_struct, active_mm));
+  BLANK();
+  DEFINE(TI_FLAGS,              offsetof(struct thread_info, flags));
+  DEFINE(TI_PREEMPT,            offsetof(struct thread_info, preempt_count));
+  DEFINE(TI_ADDR_LIMIT,         offsetof(struct thread_info, addr_limit));
+  DEFINE(TI_TASK,               offsetof(struct thread_info, task));
+  DEFINE(TI_EXEC_DOMAIN,        offsetof(struct thread_info, exec_domain));
+  DEFINE(TI_CPU,                offsetof(struct thread_info, cpu));
+  BLANK();
+  DEFINE(THREAD_CPU_CONTEXT,    offsetof(struct task_struct, thread.cpu_context));
+  BLANK();
+  DEFINE(S_X0,                  offsetof(struct pt_regs, regs[0]));
+  DEFINE(S_X1,                  offsetof(struct pt_regs, regs[1]));
+  DEFINE(S_X2,                  offsetof(struct pt_regs, regs[2]));
+  DEFINE(S_X3,                  offsetof(struct pt_regs, regs[3]));
+  DEFINE(S_X4,                  offsetof(struct pt_regs, regs[4]));
+  DEFINE(S_X5,                  offsetof(struct pt_regs, regs[5]));
+  DEFINE(S_X6,                  offsetof(struct pt_regs, regs[6]));
+  DEFINE(S_X7,                  offsetof(struct pt_regs, regs[7]));
+  DEFINE(S_LR,                  offsetof(struct pt_regs, regs[30]));
+  DEFINE(S_SP,                  offsetof(struct pt_regs, sp));
+#ifdef CONFIG_COMPAT
+  DEFINE(S_COMPAT_SP,           offsetof(struct pt_regs, compat_sp));
+#endif
+  DEFINE(S_PSTATE,              offsetof(struct pt_regs, pstate));
+  DEFINE(S_PC,                  offsetof(struct pt_regs, pc));
+  DEFINE(S_ORIG_X0,             offsetof(struct pt_regs, orig_x0));
+  DEFINE(S_SYSCALLNO,           offsetof(struct pt_regs, syscallno));
+  DEFINE(S_FRAME_SIZE,          sizeof(struct pt_regs));
+  BLANK();
+  DEFINE(MM_CONTEXT_ID,         offsetof(struct mm_struct, context.id));
+  BLANK();
+  DEFINE(VMA_VM_MM,             offsetof(struct vm_area_struct, vm_mm));
+  DEFINE(VMA_VM_FLAGS,          offsetof(struct vm_area_struct, vm_flags));
+  BLANK();
+  DEFINE(VM_EXEC,               VM_EXEC);
+  BLANK();
+  DEFINE(PAGE_SZ,               PAGE_SIZE);
+  BLANK();
+  DEFINE(CPU_INFO_SZ,           sizeof(struct cpu_info));
+  DEFINE(CPU_INFO_SETUP,        offsetof(struct cpu_info, cpu_setup));
+  BLANK();
+  DEFINE(DMA_BIDIRECTIONAL,     DMA_BIDIRECTIONAL);
+  DEFINE(DMA_TO_DEVICE,         DMA_TO_DEVICE);
+  DEFINE(DMA_FROM_DEVICE,       DMA_FROM_DEVICE);
+  BLANK();
+  DEFINE(CLOCK_REALTIME,        CLOCK_REALTIME);
+  DEFINE(CLOCK_MONOTONIC,       CLOCK_MONOTONIC);
+  DEFINE(CLOCK_REALTIME_RES,    MONOTONIC_RES_NSEC);
+  DEFINE(CLOCK_REALTIME_COARSE, CLOCK_REALTIME_COARSE);
+  DEFINE(CLOCK_MONOTONIC_COARSE,CLOCK_MONOTONIC_COARSE);
+  DEFINE(CLOCK_COARSE_RES,      LOW_RES_NSEC);
+  DEFINE(NSEC_PER_SEC,          NSEC_PER_SEC);
+  BLANK();
+  DEFINE(VDSO_CS_CYCLE_LAST,    offsetof(struct vdso_data, cs_cycle_last));
+  DEFINE(VDSO_XTIME_CLK_SEC,    offsetof(struct vdso_data, xtime_clock_sec));
+  DEFINE(VDSO_XTIME_CLK_NSEC,   offsetof(struct vdso_data, xtime_clock_nsec));
+  DEFINE(VDSO_XTIME_CRS_SEC,    offsetof(struct vdso_data, xtime_coarse_sec));
+  DEFINE(VDSO_XTIME_CRS_NSEC,   offsetof(struct vdso_data, xtime_coarse_nsec));
+  DEFINE(VDSO_WTM_CLK_SEC,      offsetof(struct vdso_data, wtm_clock_sec));
+  DEFINE(VDSO_WTM_CLK_NSEC,     offsetof(struct vdso_data, wtm_clock_nsec));
+  DEFINE(VDSO_TB_SEQ_COUNT,     offsetof(struct vdso_data, tb_seq_count));
+  DEFINE(VDSO_CS_MULT,          offsetof(struct vdso_data, cs_mult));
+  DEFINE(VDSO_CS_SHIFT,         offsetof(struct vdso_data, cs_shift));
+  DEFINE(VDSO_TZ_MINWEST,       offsetof(struct vdso_data, tz_minuteswest));
+  DEFINE(VDSO_TZ_DSTTIME,       offsetof(struct vdso_data, tz_dsttime));
+  DEFINE(VDSO_USE_SYSCALL,      offsetof(struct vdso_data, use_syscall));
+  BLANK();
+  DEFINE(TVAL_TV_SEC,           offsetof(struct timeval, tv_sec));
+  DEFINE(TVAL_TV_USEC,          offsetof(struct timeval, tv_usec));
+  DEFINE(TSPEC_TV_SEC,          offsetof(struct timespec, tv_sec));
+  DEFINE(TSPEC_TV_NSEC,         offsetof(struct timespec, tv_nsec));
+  BLANK();
+  DEFINE(TZ_MINWEST,            offsetof(struct timezone, tz_minuteswest));
+  DEFINE(TZ_DSTTIME,            offsetof(struct timezone, tz_dsttime));
+  return 0;
+}