From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 7 Mar 2024 17:28:00 -0500 Subject: lib: Add mlibc Signed-off-by: Ian Moffett --- lib/mlibc/options/internal/aarch64/setjmp.S | 63 +++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 lib/mlibc/options/internal/aarch64/setjmp.S (limited to 'lib/mlibc/options/internal/aarch64/setjmp.S') diff --git a/lib/mlibc/options/internal/aarch64/setjmp.S b/lib/mlibc/options/internal/aarch64/setjmp.S new file mode 100644 index 0000000..9dddaa8 --- /dev/null +++ b/lib/mlibc/options/internal/aarch64/setjmp.S @@ -0,0 +1,63 @@ +// vim: ft=arm64asm + +.extern __sigsetjmp + +.type __setjmp, "function" +__setjmp: + stp x19, x20, [x0, #0] + stp x21, x22, [x0, #16] + stp x23, x24, [x0, #24] + stp x25, x26, [x0, #32] + stp x27, x28, [x0, #48] + stp x29, x30, [x0, #64] + stp x29, x30, [x0, #80] + mov x4, sp + str x4, [x0, #96] + + stp d8, d9, [x0, #112] + stp d10, d11, [x0, #128] + stp d12, d13, [x0, #144] + stp d14, d15, [x0, #160] + + cbnz x2, 1f + + mov x0, xzr + ret +1: + b __sigsetjmp + +.global setjmp +.type setjmp, "function" +setjmp: + mov x2, xzr + b __setjmp + +.global sigsetjmp +.type sigsetjmp, "function" +sigsetjmp: + mov x2, #1 + b __setjmp + +.global longjmp +.type longjmp, "function" +longjmp: + ldp x19, x20, [x0, #0] + ldp x21, x22, [x0, #16] + ldp x23, x24, [x0, #24] + ldp x25, x26, [x0, #32] + ldp x27, x28, [x0, #48] + ldp x29, x30, [x0, #64] + ldp x29, x30, [x0, #80] + ldr x4, [x0, #96] + mov sp, x4 + + ldp d8, d9, [x0, #112] + ldp d10, d11, [x0, #128] + ldp d12, d13, [x0, #144] + ldp d14, d15, [x0, #160] + + cmp w1, 0 + csinc w0, w1, wzr, ne + br x30 +.section .note.GNU-stack,"",%progbits + -- cgit v1.2.3