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09d40e0e08
Enforce full include path for includes. Deprecate old paths.
The following folders inside include/lib have been left unchanged:
- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}
The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).
For example, this patch had to be created because two headers were
called the same way: e0ea0928d5 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a2 ("drivers: add tzc380 support").
This problem was introduced in commit 4ecca33988 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.
Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.
Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
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* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef CONTEXT_H
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#define CONTEXT_H
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#include <lib/utils_def.h>
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/*******************************************************************************
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* Constants that allow assembler code to access members of and the 'regs'
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* structure at their correct offsets.
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******************************************************************************/
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#define CTX_REGS_OFFSET U(0x0)
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#define CTX_GPREG_R0 U(0x0)
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#define CTX_GPREG_R1 U(0x4)
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#define CTX_GPREG_R2 U(0x8)
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#define CTX_GPREG_R3 U(0xC)
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#define CTX_LR U(0x10)
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#define CTX_SCR U(0x14)
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#define CTX_SPSR U(0x18)
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#define CTX_NS_SCTLR U(0x1C)
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#define CTX_REGS_END U(0x20)
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#ifndef __ASSEMBLY__
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#include <stdint.h>
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#include <lib/cassert.h>
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/*
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* Common constants to help define the 'cpu_context' structure and its
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* members below.
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*/
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#define WORD_SHIFT U(2)
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#define DEFINE_REG_STRUCT(name, num_regs) \
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typedef struct name { \
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uint32_t _regs[num_regs]; \
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} __aligned(8) name##_t
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/* Constants to determine the size of individual context structures */
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#define CTX_REG_ALL (CTX_REGS_END >> WORD_SHIFT)
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DEFINE_REG_STRUCT(regs, CTX_REG_ALL);
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#undef CTX_REG_ALL
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#define read_ctx_reg(ctx, offset) ((ctx)->_regs[offset >> WORD_SHIFT])
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#define write_ctx_reg(ctx, offset, val) (((ctx)->_regs[offset >> WORD_SHIFT]) \
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= val)
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typedef struct cpu_context {
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regs_t regs_ctx;
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} cpu_context_t;
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/* Macros to access members of the 'cpu_context_t' structure */
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#define get_regs_ctx(h) (&((cpu_context_t *) h)->regs_ctx)
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/*
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* Compile time assertions related to the 'cpu_context' structure to
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* ensure that the assembler and the compiler view of the offsets of
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* the structure members is the same.
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*/
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CASSERT(CTX_REGS_OFFSET == __builtin_offsetof(cpu_context_t, regs_ctx), \
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assert_core_context_regs_offset_mismatch);
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#endif /* __ASSEMBLY__ */
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#endif /* CONTEXT_H */
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