linkage.h

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/* SPDX-License-Identifier: GPL-2.0+ */
 
#ifndef __ARM32_LINKAGE_H__
#define __ARM32_LINKAGE_H__
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define ALIGN .align 0
#define ALIGN_STR ".align 0"
 
#define ENTRY(name) \
    .globl name;    \
    ALIGN;          \
    name:
 
#define WEAK(name) \
    .weak name;    \
    name:
 
#define END(name) .size name, .- name
 
#define ENDPROC(name)       \
    .type name, % function; \
    END(name)
 
/*
 * CR1 bits (CP#15 CR1)
 */
#define CR_M (1 << 0)   /* MMU enable               */
#define CR_A (1 << 1)   /* Alignment abort enable       */
#define CR_C (1 << 2)   /* Dcache enable            */
#define CR_W (1 << 3)   /* Write buffer enable          */
#define CR_P (1 << 4)   /* 32-bit exception handler     */
#define CR_D (1 << 5)   /* 32-bit data address range        */
#define CR_L (1 << 6)   /* Implementation defined       */
#define CR_B (1 << 7)   /* Big endian               */
#define CR_S (1 << 8)   /* System MMU protection        */
#define CR_R (1 << 9)   /* ROM MMU protection           */
#define CR_F (1 << 10)  /* Implementation defined       */
#define CR_Z (1 << 11)  /* Implementation defined       */
#define CR_I (1 << 12)  /* Icache enable            */
#define CR_V (1 << 13)  /* Vectors relocated to 0xffff0000  */
#define CR_RR (1 << 14) /* Round Robin cache replacement    */
#define CR_L4 (1 << 15) /* LDR pc can set T bit         */
#define CR_DT (1 << 16)
#define CR_IT (1 << 18)
#define CR_ST (1 << 19)
#define CR_FI (1 << 21)  /* Fast interrupt (lower latency mode) */
#define CR_U (1 << 22)   /* Unaligned access operation      */
#define CR_XP (1 << 23)  /* Extended page tables            */
#define CR_VE (1 << 24)  /* Vectored interrupts         */
#define CR_EE (1 << 25)  /* Exception (Big) Endian      */
#define CR_TRE (1 << 28) /* TEX remap enable            */
#define CR_AFE (1 << 29) /* Access flag enable          */
#define CR_TE (1 << 30)  /* Thumb exception enable      */
 
/* ARM relocs */
#define R_ARM_NONE 0      /* No reloc */
#define R_ARM_RELATIVE 23 /* Adjust by program base */
 
#ifdef __cplusplus
}
#endif
 
#endif /* __ARM32_LINKAGE_H__ */