diff options
Diffstat (limited to 'lib/libutee/arch/arm/utee_syscalls_a32.S')
-rw-r--r-- | lib/libutee/arch/arm/utee_syscalls_a32.S | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/libutee/arch/arm/utee_syscalls_a32.S b/lib/libutee/arch/arm/utee_syscalls_a32.S new file mode 100644 index 0000000..6046b3a --- /dev/null +++ b/lib/libutee/arch/arm/utee_syscalls_a32.S @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2015, Linaro Limited + * Copyright (c) 2014, STMicroelectronics International N.V. + * 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. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 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 HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <tee_syscall_numbers.h> +#include <asm.S> + + .section .text + .balign 4 + .code 32 + + .macro UTEE_SYSCALL name, scn, num_args + FUNC \name , : + + push {r5-r7,lr} + mov r7, #(\scn) + .if \num_args > TEE_SVC_MAX_ARGS + .error "Too many arguments for syscall" + .endif + .if \num_args <= 4 + @ No arguments passed on stack + mov r6, #0 + .else + @ Tell number of arguments passed on the stack + mov r6, #(\num_args - 4) + @ Point just before the push (4 registers) above on the first argument + add r5, sp, #(4 * 4) + .endif + svc #0 + pop {r5-r7,pc} + END_FUNC \name + .endm + +#include "utee_syscalls_asm.S" |