/******************************************************************************
* Copyright © 2025 Martin Storsjo
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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#define PRIVATE_PREFIX selftest_
#include "src/checkasm_config.h"
#if ARCH_ARM
#include "src/arm/asm.S"
#ifndef __ARM_ARCH
#ifdef _M_ARM
#define __ARM_ARCH _M_ARM
#else
#define __ARM_ARCH 0
#endif
#endif
.macro v4bx rd
#if __ARM_ARCH >= 5 || defined(__ARM_ARCH_4T__)
bx \rd
#else
mov pc, \rd
#endif
.endm
function sigill_arm, export=1
udf #0
v4bx lr
endfunc
.macro clobber_r reg
function clobber_\reg, export=1
mov \reg, #0x42
v4bx lr
endfunc
.endm
.macro clobber_d reg
function clobber_\reg, export=1
mov r0, #0x42
mov r1, #0x42
vmov \reg, r0, r1
v4bx lr
endfunc
.endm
.irp r, r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12
clobber_r \r
.endr
.irp r, d0, d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11, d12, d13, d14, d15, d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31
clobber_d \r
.endr
// void clobber_stack_args_arm(int, int, int, int, int);
//
// Write into the stack of the caller, overwriting the arguments that are on
// the stack. This is legal to do.
function clobber_stack_args_arm, export=1
mov r0, #0x42
str r0, [sp, #0]
v4bx lr
endfunc
// void clobber_stack_arm(int, int, int, int, int);
//
// Write into the stack of the caller, writing past the arguments on the stack
// that we are allowed to touch.
function clobber_stack_arm, export=1
mov r0, #0x42
str r0, [sp, #0]
str r0, [sp, #4]
v4bx lr
endfunc
function clobber_fpscr_vfp, export=1
// Flush to zero, default NaN mode, round towards zero
ldr r12, =0x3C00000
fmxr fpscr, r12
v4bx lr
endfunc
#endif
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