2005-04-17 05:20:36 +07:00
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#ifndef _ASM_ARM_MODULE_H
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#define _ASM_ARM_MODULE_H
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2012-09-28 12:01:03 +07:00
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#include <asm-generic/module.h>
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2005-04-17 05:20:36 +07:00
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2009-02-11 19:09:54 +07:00
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struct unwind_table;
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#ifdef CONFIG_ARM_UNWIND
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2010-08-19 21:16:37 +07:00
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enum {
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ARM_SEC_INIT,
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ARM_SEC_DEVINIT,
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ARM_SEC_CORE,
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2010-08-19 21:19:04 +07:00
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ARM_SEC_EXIT,
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ARM_SEC_DEVEXIT,
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2013-08-29 06:08:01 +07:00
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ARM_SEC_HOT,
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ARM_SEC_UNLIKELY,
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2010-08-19 21:16:37 +07:00
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ARM_SEC_MAX,
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};
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2014-11-24 22:54:35 +07:00
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#endif
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2010-11-12 20:02:46 +07:00
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2010-08-19 21:16:37 +07:00
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struct mod_arch_specific {
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2014-11-24 22:54:35 +07:00
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#ifdef CONFIG_ARM_UNWIND
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2010-11-12 20:02:46 +07:00
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struct unwind_table *unwind[ARM_SEC_MAX];
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2012-09-28 12:01:03 +07:00
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#endif
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2014-11-24 22:54:35 +07:00
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#ifdef CONFIG_ARM_MODULE_PLTS
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2016-08-16 22:21:02 +07:00
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struct elf32_shdr *plt;
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int plt_count;
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2014-11-24 22:54:35 +07:00
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#endif
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};
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u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);
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2009-02-11 19:09:54 +07:00
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2005-04-17 05:20:36 +07:00
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/*
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ARM: P2V: introduce phys_to_virt/virt_to_phys runtime patching
This idea came from Nicolas, Eric Miao produced an initial version,
which was then rewritten into this.
Patch the physical to virtual translations at runtime. As we modify
the code, this makes it incompatible with XIP kernels, but allows us
to achieve this with minimal loss of performance.
As many translations are of the form:
physical = virtual + (PHYS_OFFSET - PAGE_OFFSET)
virtual = physical - (PHYS_OFFSET - PAGE_OFFSET)
we generate an 'add' instruction for __virt_to_phys(), and a 'sub'
instruction for __phys_to_virt(). We calculate at run time (PHYS_OFFSET
- PAGE_OFFSET) by comparing the address prior to MMU initialization with
where it should be once the MMU has been initialized, and place this
constant into the above add/sub instructions.
Once we have (PHYS_OFFSET - PAGE_OFFSET), we can calculate the real
PHYS_OFFSET as PAGE_OFFSET is a build-time constant, and save this for
the C-mode PHYS_OFFSET variable definition to use.
At present, we are unable to support Realview with Sparsemem enabled
as this uses a complex mapping function, and MSM as this requires a
constant which will not fit in our math instruction.
Add a module version magic string for this feature to prevent
incompatible modules being loaded.
Tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-05 02:09:43 +07:00
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* Add the ARM architecture version to the version magic string
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2005-04-17 05:20:36 +07:00
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*/
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ARM: P2V: introduce phys_to_virt/virt_to_phys runtime patching
This idea came from Nicolas, Eric Miao produced an initial version,
which was then rewritten into this.
Patch the physical to virtual translations at runtime. As we modify
the code, this makes it incompatible with XIP kernels, but allows us
to achieve this with minimal loss of performance.
As many translations are of the form:
physical = virtual + (PHYS_OFFSET - PAGE_OFFSET)
virtual = physical - (PHYS_OFFSET - PAGE_OFFSET)
we generate an 'add' instruction for __virt_to_phys(), and a 'sub'
instruction for __phys_to_virt(). We calculate at run time (PHYS_OFFSET
- PAGE_OFFSET) by comparing the address prior to MMU initialization with
where it should be once the MMU has been initialized, and place this
constant into the above add/sub instructions.
Once we have (PHYS_OFFSET - PAGE_OFFSET), we can calculate the real
PHYS_OFFSET as PAGE_OFFSET is a build-time constant, and save this for
the C-mode PHYS_OFFSET variable definition to use.
At present, we are unable to support Realview with Sparsemem enabled
as this uses a complex mapping function, and MSM as this requires a
constant which will not fit in our math instruction.
Add a module version magic string for this feature to prevent
incompatible modules being loaded.
Tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-05 02:09:43 +07:00
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#define MODULE_ARCH_VERMAGIC_ARMVSN "ARMv" __stringify(__LINUX_ARM_ARCH__) " "
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/* Add __virt_to_phys patching state as well */
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#ifdef CONFIG_ARM_PATCH_PHYS_VIRT
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#define MODULE_ARCH_VERMAGIC_P2V "p2v8 "
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#else
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#define MODULE_ARCH_VERMAGIC_P2V ""
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#endif
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2011-02-25 23:54:52 +07:00
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/* Add instruction set architecture tag to distinguish ARM/Thumb kernels */
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#ifdef CONFIG_THUMB2_KERNEL
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#define MODULE_ARCH_VERMAGIC_ARMTHUMB "thumb2 "
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#else
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#define MODULE_ARCH_VERMAGIC_ARMTHUMB ""
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#endif
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ARM: P2V: introduce phys_to_virt/virt_to_phys runtime patching
This idea came from Nicolas, Eric Miao produced an initial version,
which was then rewritten into this.
Patch the physical to virtual translations at runtime. As we modify
the code, this makes it incompatible with XIP kernels, but allows us
to achieve this with minimal loss of performance.
As many translations are of the form:
physical = virtual + (PHYS_OFFSET - PAGE_OFFSET)
virtual = physical - (PHYS_OFFSET - PAGE_OFFSET)
we generate an 'add' instruction for __virt_to_phys(), and a 'sub'
instruction for __phys_to_virt(). We calculate at run time (PHYS_OFFSET
- PAGE_OFFSET) by comparing the address prior to MMU initialization with
where it should be once the MMU has been initialized, and place this
constant into the above add/sub instructions.
Once we have (PHYS_OFFSET - PAGE_OFFSET), we can calculate the real
PHYS_OFFSET as PAGE_OFFSET is a build-time constant, and save this for
the C-mode PHYS_OFFSET variable definition to use.
At present, we are unable to support Realview with Sparsemem enabled
as this uses a complex mapping function, and MSM as this requires a
constant which will not fit in our math instruction.
Add a module version magic string for this feature to prevent
incompatible modules being loaded.
Tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-05 02:09:43 +07:00
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#define MODULE_ARCH_VERMAGIC \
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MODULE_ARCH_VERMAGIC_ARMVSN \
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2011-02-25 23:54:52 +07:00
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MODULE_ARCH_VERMAGIC_ARMTHUMB \
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ARM: P2V: introduce phys_to_virt/virt_to_phys runtime patching
This idea came from Nicolas, Eric Miao produced an initial version,
which was then rewritten into this.
Patch the physical to virtual translations at runtime. As we modify
the code, this makes it incompatible with XIP kernels, but allows us
to achieve this with minimal loss of performance.
As many translations are of the form:
physical = virtual + (PHYS_OFFSET - PAGE_OFFSET)
virtual = physical - (PHYS_OFFSET - PAGE_OFFSET)
we generate an 'add' instruction for __virt_to_phys(), and a 'sub'
instruction for __phys_to_virt(). We calculate at run time (PHYS_OFFSET
- PAGE_OFFSET) by comparing the address prior to MMU initialization with
where it should be once the MMU has been initialized, and place this
constant into the above add/sub instructions.
Once we have (PHYS_OFFSET - PAGE_OFFSET), we can calculate the real
PHYS_OFFSET as PAGE_OFFSET is a build-time constant, and save this for
the C-mode PHYS_OFFSET variable definition to use.
At present, we are unable to support Realview with Sparsemem enabled
as this uses a complex mapping function, and MSM as this requires a
constant which will not fit in our math instruction.
Add a module version magic string for this feature to prevent
incompatible modules being loaded.
Tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-05 02:09:43 +07:00
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MODULE_ARCH_VERMAGIC_P2V
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2005-04-17 05:20:36 +07:00
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#endif /* _ASM_ARM_MODULE_H */
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