/* * arch/arm/include/asm/opcodes.h * * 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. */ #ifndef __ASM_ARM_OPCODES_H #define __ASM_ARM_OPCODES_H #ifndef __ASSEMBLY__ #include <linux/linkage.h> extern asmlinkage unsigned int arm_check_condition(u32 opcode, u32 psr); #endif #define ARM_OPCODE_CONDTEST_FAIL 0 #define ARM_OPCODE_CONDTEST_PASS 1 #define ARM_OPCODE_CONDTEST_UNCOND 2 /* * Assembler opcode byteswap helpers. * These are only intended for use by this header: don't use them directly, * because they will be suboptimal in most cases. */ #define ___asm_opcode_swab32(x) ( \ (((x) << 24) & 0xFF000000) \ | (((x) << 8) & 0x00FF0000) \ | (((x) >> 8) & 0x0000FF00) \ | (((x) >> 24) & 0x000000FF) \ ) #define ___asm_opcode_swab16(x) ( \ (((x) << 8) & 0xFF00) \ | (((x) >> 8) & 0x00FF) \ ) #define ___asm_opcode_swahb32(x) ( \ (((x) << 8) & 0xFF00FF00) \ | (((x) >> 8) & 0x00FF00FF) \ ) #define ___asm_opcode_swahw32(x) ( \ (((x) << 16) & 0xFFFF0000) \ | (((x) >> 16) & 0x0000FFFF) \ ) #define ___asm_opcode_identity32(x) ((x) & 0xFFFFFFFF) #define ___asm_opcode_identity16(x) ((x) & 0xFFFF) /* * Opcode byteswap helpers * * These macros help with converting instructions between a canonical integer * format and in-memory representation, in an endianness-agnostic manner. * * __mem_to_opcode_*() convert from in-memory representation to canonical form. * __opcode_to_mem_*() convert from canonical form to in-memory representation. * * * Canonical instruction representation: * * ARM: 0xKKLLMMNN * Thumb 16-bit: 0x0000KKLL, where KK < 0xE8 * Thumb 32-bit: 0xKKLLMMNN, where KK >= 0xE8 * * There is no way to distinguish an ARM instruction in canonical representation * from a Thumb instruction (just as these cannot be distinguished in memory). * Where this distinction is important, it needs to be tracked separately. * * Note that values in the range 0x0000E800..0xE7FFFFFF intentionally do not * represent any valid Thumb-2 instruction. For this range, * __opcode_is_thumb32() and __opcode_is_thumb16() will both be false. * * The ___asm variants are intended only for use by this header, in situations * involving inline assembler. For .S files, the normal __opcode_*() macros * should do the right thing. */ #ifdef __ASSEMBLY__ #define ___opcode_swab32(x) ___asm_opcode_swab32(x) #define ___opcode_swab16(x) ___asm_opcode_swab16(x) #define ___opcode_swahb32(x) ___asm_opcode_swahb32(x) #define ___opcode_swahw32(x) ___asm_opcode_swahw32(x) #define ___opcode_identity32(x) ___asm_opcode_identity32(x) #define ___opcode_identity16(x) ___asm_opcode_identity16(x) #else /* ! __ASSEMBLY__ */ #include <linux/types.h> #include <linux/swab.h> #define ___opcode_swab32(x) swab32(x) #define ___opcode_swab16(x) swab16(x) #define ___opcode_swahb32(x) swahb32(x) #define ___opcode_swahw32(x) swahw32(x) #define ___opcode_identity32(x) ((u32)(x)) #define ___opcode_identity16(x) ((u16)(x)) #endif /* ! __ASSEMBLY__ */ #ifdef CONFIG_CPU_ENDIAN_BE8 #define __opcode_to_mem_arm(x) ___opcode_swab32(x) #define __opcode_to_mem_thumb16(x) ___opcode_swab16(x) #define __opcode_to_mem_thumb32(x) ___opcode_swahb32(x) #define ___asm_opcode_to_mem_arm(x) ___asm_opcode_swab32(x) #define ___asm_opcode_to_mem_thumb16(x) ___asm_opcode_swab16(x) #define ___asm_opcode_to_mem_thumb32(x) ___asm_opcode_swahb32(x) #else /* ! CONFIG_CPU_ENDIAN_BE8 */ #define __opcode_to_mem_arm(x) ___opcode_identity32(x) #define __opcode_to_mem_thumb16(x) ___opcode_identity16(x) #define ___asm_opcode_to_mem_arm(x) ___asm_opcode_identity32(x) #define ___asm_opcode_to_mem_thumb16(x) ___asm_opcode_identity16(x) #ifndef CONFIG_CPU_ENDIAN_BE32 /* * On BE32 systems, using 32-bit accesses to store Thumb instructions will not * work in all cases, due to alignment constraints. For now, a correct * version is not provided for BE32. */ #define __opcode_to_mem_thumb32(x) ___opcode_swahw32(x) #define ___asm_opcode_to_mem_thumb32(x) ___asm_opcode_swahw32(x) #endif #endif /* ! CONFIG_CPU_ENDIAN_BE8 */ #define __mem_to_opcode_arm(x) __opcode_to_mem_arm(x) #define __mem_to_opcode_thumb16(x) __opcode_to_mem_thumb16(x) #ifndef CONFIG_CPU_ENDIAN_BE32 #define __mem_to_opcode_thumb32(x) __opcode_to_mem_thumb32(x) #endif /* Operations specific to Thumb opcodes */ /* Instruction size checks: */ #define __opcode_is_thumb32(x) ( \ ((x) & 0xF8000000) == 0xE8000000 \ || ((x) & 0xF0000000) == 0xF0000000 \ ) #define __opcode_is_thumb16(x) ( \ ((x) & 0xFFFF0000) == 0 \ && !(((x) & 0xF800) == 0xE800 || ((x) & 0xF000) == 0xF000) \ ) /* Operations to construct or split 32-bit Thumb instructions: */ #define __opcode_thumb32_first(x) (___opcode_identity16((x) >> 16)) #define __opcode_thumb32_second(x) (___opcode_identity16(x)) #define __opcode_thumb32_compose(first, second) ( \ (___opcode_identity32(___opcode_identity16(first)) << 16) \ | ___opcode_identity32(___opcode_identity16(second)) \ ) #define ___asm_opcode_thumb32_first(x) (___asm_opcode_identity16((x) >> 16)) #define ___asm_opcode_thumb32_second(x) (___asm_opcode_identity16(x)) #define ___asm_opcode_thumb32_compose(first, second) ( \ (___asm_opcode_identity32(___asm_opcode_identity16(first)) << 16) \ | ___asm_opcode_identity32(___asm_opcode_identity16(second)) \ ) /* * Opcode injection helpers * * In rare cases it is necessary to assemble an opcode which the * assembler does not support directly, or which would normally be * rejected because of the CFLAGS or AFLAGS used to build the affected * file. * * Before using these macros, consider carefully whether it is feasible * instead to change the build flags for your file, or whether it really * makes sense to support old assembler versions when building that * particular kernel feature. * * The macros defined here should only be used where there is no viable * alternative. * * * __inst_arm(x): emit the specified ARM opcode * __inst_thumb16(x): emit the specified 16-bit Thumb opcode * __inst_thumb32(x): emit the specified 32-bit Thumb opcode * * __inst_arm_thumb16(arm, thumb): emit either the specified arm or * 16-bit Thumb opcode, depending on whether an ARM or Thumb-2 * kernel is being built * * __inst_arm_thumb32(arm, thumb): emit either the specified arm or * 32-bit Thumb opcode, depending on whether an ARM or Thumb-2 * kernel is being built * * * Note that using these macros directly is poor practice. Instead, you * should use them to define human-readable wrapper macros to encode the * instructions that you care about. In code which might run on ARMv7 or * above, you can usually use the __inst_arm_thumb{16,32} macros to * specify the ARM and Thumb alternatives at the same time. This ensures * that the correct opcode gets emitted depending on the instruction set * used for the kernel build. * * Look at opcodes-virt.h for an example of how to use these macros. */ #include <linux/stringify.h> #define __inst_arm(x) ___inst_arm(___asm_opcode_to_mem_arm(x)) #define __inst_thumb32(x) ___inst_thumb32( \ ___asm_opcode_to_mem_thumb16(___asm_opcode_thumb32_first(x)), \ ___asm_opcode_to_mem_thumb16(___asm_opcode_thumb32_second(x)) \ ) #define __inst_thumb16(x) ___inst_thumb16(___asm_opcode_to_mem_thumb16(x)) #ifdef CONFIG_THUMB2_KERNEL #define __inst_arm_thumb16(arm_opcode, thumb_opcode) \ __inst_thumb16(thumb_opcode) #define __inst_arm_thumb32(arm_opcode, thumb_opcode) \ __inst_thumb32(thumb_opcode) #else #define __inst_arm_thumb16(arm_opcode, thumb_opcode) __inst_arm(arm_opcode) #define __inst_arm_thumb32(arm_opcode, thumb_opcode) __inst_arm(arm_opcode) #endif /* Helpers for the helpers. Don't use these directly. */ #ifdef __ASSEMBLY__ #define ___inst_arm(x) .long x #define ___inst_thumb16(x) .short x #define ___inst_thumb32(first, second) .short first, second #else #define ___inst_arm(x) ".long " __stringify(x) "\n\t" #define ___inst_thumb16(x) ".short " __stringify(x) "\n\t" #define ___inst_thumb32(first, second) \ ".short " __stringify(first) ", " __stringify(second) "\n\t" #endif #endif /* __ASM_ARM_OPCODES_H */
Name | Type | Size | Permission | Actions |
---|---|---|---|---|
hardware | Folder | 0755 |
|
|
mach | Folder | 0755 |
|
|
xen | Folder | 0755 |
|
|
Kbuild | File | 568 B | 0644 |
|
arch_gicv3.h | File | 9.05 KB | 0644 |
|
arch_timer.h | File | 2.48 KB | 0644 |
|
arm-cci.h | File | 1.05 KB | 0644 |
|
asm-offsets.h | File | 35 B | 0644 |
|
assembler.h | File | 10.46 KB | 0644 |
|
atomic.h | File | 13.22 KB | 0644 |
|
auxvec.h | File | 29 B | 0644 |
|
bL_switcher.h | File | 2.28 KB | 0644 |
|
barrier.h | File | 2.84 KB | 0644 |
|
bitops.h | File | 8.62 KB | 0644 |
|
bitrev.h | File | 451 B | 0644 |
|
bug.h | File | 2.46 KB | 0644 |
|
bugs.h | File | 546 B | 0644 |
|
cache.h | File | 813 B | 0644 |
|
cacheflush.h | File | 15.54 KB | 0644 |
|
cachetype.h | File | 2.71 KB | 0644 |
|
checksum.h | File | 3.71 KB | 0644 |
|
clocksource.h | File | 153 B | 0644 |
|
cmpxchg.h | File | 6.14 KB | 0644 |
|
compiler.h | File | 978 B | 0644 |
|
cp15.h | File | 3.84 KB | 0644 |
|
cpu.h | File | 533 B | 0644 |
|
cpufeature.h | File | 1.4 KB | 0644 |
|
cpuidle.h | File | 1.33 KB | 0644 |
|
cputype.h | File | 8.42 KB | 0644 |
|
cti.h | File | 3.62 KB | 0644 |
|
dcc.h | File | 1.01 KB | 0644 |
|
delay.h | File | 2.83 KB | 0644 |
|
device.h | File | 771 B | 0644 |
|
div64.h | File | 3.17 KB | 0644 |
|
dma-contiguous.h | File | 265 B | 0644 |
|
dma-iommu.h | File | 1.01 KB | 0644 |
|
dma-mapping.h | File | 7.44 KB | 0644 |
|
dma.h | File | 4.18 KB | 0644 |
|
dmi.h | File | 528 B | 0644 |
|
domain.h | File | 3.65 KB | 0644 |
|
ecard.h | File | 5.98 KB | 0644 |
|
edac.h | File | 1.51 KB | 0644 |
|
efi.h | File | 3.04 KB | 0644 |
|
elf.h | File | 4.52 KB | 0644 |
|
entry-macro-multi.S | File | 726 B | 0644 |
|
exception.h | File | 571 B | 0644 |
|
fb.h | File | 375 B | 0644 |
|
fiq.h | File | 1.36 KB | 0644 |
|
firmware.h | File | 1.82 KB | 0644 |
|
fixmap.h | File | 1.84 KB | 0644 |
|
flat.h | File | 915 B | 0644 |
|
floppy.h | File | 3.61 KB | 0644 |
|
fncpy.h | File | 3.08 KB | 0644 |
|
fpstate.h | File | 1.73 KB | 0644 |
|
ftrace.h | File | 1.92 KB | 0644 |
|
futex.h | File | 4.24 KB | 0644 |
|
glue-cache.h | File | 3.51 KB | 0644 |
|
glue-df.h | File | 2.2 KB | 0644 |
|
glue-pf.h | File | 1.12 KB | 0644 |
|
glue-proc.h | File | 4.46 KB | 0644 |
|
glue.h | File | 759 B | 0644 |
|
gpio.h | File | 693 B | 0644 |
|
hardirq.h | File | 803 B | 0644 |
|
highmem.h | File | 2.15 KB | 0644 |
|
hugetlb-3level.h | File | 2.03 KB | 0644 |
|
hugetlb.h | File | 1.78 KB | 0644 |
|
hw_breakpoint.h | File | 3.53 KB | 0644 |
|
hw_irq.h | File | 349 B | 0644 |
|
hwcap.h | File | 378 B | 0644 |
|
hypervisor.h | File | 140 B | 0644 |
|
ide.h | File | 566 B | 0644 |
|
idmap.h | File | 355 B | 0644 |
|
insn.h | File | 636 B | 0644 |
|
io.h | File | 15.96 KB | 0644 |
|
irq.h | File | 1015 B | 0644 |
|
irq_work.h | File | 234 B | 0644 |
|
irqflags.h | File | 3.88 KB | 0644 |
|
jump_label.h | File | 1009 B | 0644 |
|
kexec-internal.h | File | 272 B | 0644 |
|
kexec.h | File | 2.3 KB | 0644 |
|
kgdb.h | File | 2.72 KB | 0644 |
|
kmap_types.h | File | 190 B | 0644 |
|
kprobes.h | File | 2.65 KB | 0644 |
|
kvm_arm.h | File | 7.6 KB | 0644 |
|
kvm_asm.h | File | 2.84 KB | 0644 |
|
kvm_coproc.h | File | 1.99 KB | 0644 |
|
kvm_emulate.h | File | 7.84 KB | 0644 |
|
kvm_host.h | File | 10.31 KB | 0644 |
|
kvm_hyp.h | File | 4.49 KB | 0644 |
|
kvm_mmio.h | File | 1.34 KB | 0644 |
|
kvm_mmu.h | File | 7.27 KB | 0644 |
|
limits.h | File | 166 B | 0644 |
|
linkage.h | File | 216 B | 0644 |
|
mc146818rtc.h | File | 720 B | 0644 |
|
mcpm.h | File | 11.92 KB | 0644 |
|
mcs_spinlock.h | File | 570 B | 0644 |
|
memblock.h | File | 248 B | 0644 |
|
memory.h | File | 10.12 KB | 0644 |
|
mmu.h | File | 953 B | 0644 |
|
mmu_context.h | File | 3.94 KB | 0644 |
|
module.h | File | 1.57 KB | 0644 |
|
mpu.h | File | 2.15 KB | 0644 |
|
mtd-xip.h | File | 666 B | 0644 |
|
neon.h | File | 1.16 KB | 0644 |
|
nwflash.h | File | 252 B | 0644 |
|
opcodes-sec.h | File | 742 B | 0644 |
|
opcodes-virt.h | File | 1.32 KB | 0644 |
|
opcodes.h | File | 8.07 KB | 0644 |
|
outercache.h | File | 3.78 KB | 0644 |
|
page-nommu.h | File | 957 B | 0644 |
|
page.h | File | 3.61 KB | 0644 |
|
paravirt.h | File | 454 B | 0644 |
|
patch.h | File | 438 B | 0644 |
|
pci.h | File | 956 B | 0644 |
|
percpu.h | File | 1.56 KB | 0644 |
|
perf_event.h | File | 850 B | 0644 |
|
pgalloc.h | File | 3.79 KB | 0644 |
|
pgtable-2level-hwdef.h | File | 3.45 KB | 0644 |
|
pgtable-2level-types.h | File | 1.84 KB | 0644 |
|
pgtable-2level.h | File | 8.51 KB | 0644 |
|
pgtable-3level-hwdef.h | File | 3.95 KB | 0644 |
|
pgtable-3level-types.h | File | 1.89 KB | 0644 |
|
pgtable-3level.h | File | 9.54 KB | 0644 |
|
pgtable-hwdef.h | File | 467 B | 0644 |
|
pgtable-nommu.h | File | 2.66 KB | 0644 |
|
pgtable.h | File | 11.68 KB | 0644 |
|
probes.h | File | 1.73 KB | 0644 |
|
proc-fns.h | File | 4.79 KB | 0644 |
|
processor.h | File | 3.4 KB | 0644 |
|
procinfo.h | File | 1.27 KB | 0644 |
|
prom.h | File | 715 B | 0644 |
|
psci.h | File | 771 B | 0644 |
|
ptrace.h | File | 4.89 KB | 0644 |
|
sections.h | File | 189 B | 0644 |
|
set_memory.h | File | 1.04 KB | 0644 |
|
setup.h | File | 934 B | 0644 |
|
shmparam.h | File | 419 B | 0644 |
|
signal.h | File | 500 B | 0644 |
|
smp.h | File | 3.1 KB | 0644 |
|
smp_plat.h | File | 2.48 KB | 0644 |
|
smp_scu.h | File | 1.32 KB | 0644 |
|
smp_twd.h | File | 908 B | 0644 |
|
sparsemem.h | File | 716 B | 0644 |
|
spectre.h | File | 906 B | 0644 |
|
spinlock.h | File | 5.49 KB | 0644 |
|
spinlock_types.h | File | 541 B | 0644 |
|
stackprotector.h | File | 1.09 KB | 0644 |
|
stacktrace.h | File | 742 B | 0644 |
|
stage2_pgtable.h | File | 2.12 KB | 0644 |
|
string.h | File | 1.43 KB | 0644 |
|
suspend.h | File | 369 B | 0644 |
|
swab.h | File | 1005 B | 0644 |
|
switch_to.h | File | 1.03 KB | 0644 |
|
sync_bitops.h | File | 1.03 KB | 0644 |
|
syscall.h | File | 2.48 KB | 0644 |
|
system_info.h | File | 763 B | 0644 |
|
system_misc.h | File | 1.14 KB | 0644 |
|
tcm.h | File | 937 B | 0644 |
|
therm.h | File | 655 B | 0644 |
|
thread_info.h | File | 5.2 KB | 0644 |
|
thread_notify.h | File | 1.2 KB | 0644 |
|
timex.h | File | 577 B | 0644 |
|
tlb.h | File | 7.37 KB | 0644 |
|
tlbflush.h | File | 17.88 KB | 0644 |
|
tls.h | File | 3.09 KB | 0644 |
|
topology.h | File | 1.18 KB | 0644 |
|
traps.h | File | 1.17 KB | 0644 |
|
trusted_foundations.h | File | 2.29 KB | 0644 |
|
uaccess-asm.h | File | 2.83 KB | 0644 |
|
uaccess.h | File | 16.22 KB | 0644 |
|
ucontext.h | File | 2.98 KB | 0644 |
|
unaligned.h | File | 846 B | 0644 |
|
unified.h | File | 1.61 KB | 0644 |
|
unistd.h | File | 1.68 KB | 0644 |
|
unwind.h | File | 1.71 KB | 0644 |
|
uprobes.h | File | 1.07 KB | 0644 |
|
user.h | File | 4.2 KB | 0644 |
|
v7m.h | File | 2.93 KB | 0644 |
|
vdso.h | File | 507 B | 0644 |
|
vdso_datapage.h | File | 1.69 KB | 0644 |
|
vfp.h | File | 2.86 KB | 0644 |
|
vfpmacros.h | File | 2.1 KB | 0644 |
|
vga.h | File | 305 B | 0644 |
|
virt.h | File | 2.9 KB | 0644 |
|
word-at-a-time.h | File | 2.08 KB | 0644 |
|
xor.h | File | 5.22 KB | 0644 |
|