From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- include/lib/el3_runtime/aarch32/context.h | 70 +++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 include/lib/el3_runtime/aarch32/context.h (limited to 'include/lib/el3_runtime/aarch32/context.h') diff --git a/include/lib/el3_runtime/aarch32/context.h b/include/lib/el3_runtime/aarch32/context.h new file mode 100644 index 0000000..5604c8e --- /dev/null +++ b/include/lib/el3_runtime/aarch32/context.h @@ -0,0 +1,70 @@ +/* + * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef CONTEXT_H +#define CONTEXT_H + +#include + +/******************************************************************************* + * Constants that allow assembler code to access members of and the 'regs' + * structure at their correct offsets. + ******************************************************************************/ +#define CTX_REGS_OFFSET U(0x0) +#define CTX_GPREG_R0 U(0x0) +#define CTX_GPREG_R1 U(0x4) +#define CTX_GPREG_R2 U(0x8) +#define CTX_GPREG_R3 U(0xC) +#define CTX_LR U(0x10) +#define CTX_SCR U(0x14) +#define CTX_SPSR U(0x18) +#define CTX_NS_SCTLR U(0x1C) +#define CTX_REGS_END U(0x20) + +#ifndef __ASSEMBLER__ + +#include + +#include + +/* + * Common constants to help define the 'cpu_context' structure and its + * members below. + */ +#define WORD_SHIFT U(2) +#define DEFINE_REG_STRUCT(name, num_regs) \ + typedef struct name { \ + uint32_t ctx_regs[num_regs]; \ + } __aligned(8) name##_t + +/* Constants to determine the size of individual context structures */ +#define CTX_REG_ALL (CTX_REGS_END >> WORD_SHIFT) + +DEFINE_REG_STRUCT(regs, CTX_REG_ALL); + +#undef CTX_REG_ALL + +#define read_ctx_reg(ctx, offset) ((ctx)->ctx_regs[offset >> WORD_SHIFT]) +#define write_ctx_reg(ctx, offset, val) (((ctx)->ctx_regs[offset >> WORD_SHIFT]) \ + = val) +typedef struct cpu_context { + regs_t regs_ctx; +} cpu_context_t; + +/* Macros to access members of the 'cpu_context_t' structure */ +#define get_regs_ctx(h) (&((cpu_context_t *) h)->regs_ctx) + +/* + * Compile time assertions related to the 'cpu_context' structure to + * ensure that the assembler and the compiler view of the offsets of + * the structure members is the same. + */ +CASSERT(CTX_REGS_OFFSET == __builtin_offsetof(cpu_context_t, regs_ctx), \ + assert_core_context_regs_offset_mismatch); + +#endif /* __ASSEMBLER__ */ + +#endif /* CONTEXT_H */ -- cgit v1.2.3