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Diffstat (limited to '')
-rw-r--r-- | xpcom/reflect/xptcall/md/unix/xptcinvoke_asm_aarch64.S | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/xpcom/reflect/xptcall/md/unix/xptcinvoke_asm_aarch64.S b/xpcom/reflect/xptcall/md/unix/xptcinvoke_asm_aarch64.S new file mode 100644 index 0000000000..69a55b1c1c --- /dev/null +++ b/xpcom/reflect/xptcall/md/unix/xptcinvoke_asm_aarch64.S @@ -0,0 +1,92 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifdef __APPLE__ +#define SYM(x) _ ## x +#else +#define SYM(x) x +#endif + + .text + .align 2 + .globl SYM(_NS_InvokeByIndex) +#ifndef __APPLE__ + .type _NS_InvokeByIndex,@function +#endif + +/* + * _NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex, + * uint32_t paramCount, nsXPTCVariant* params) + */ + +SYM(_NS_InvokeByIndex): + .cfi_startproc + # set up frame + stp x29, x30, [sp,#-32]! + .cfi_adjust_cfa_offset 32 + .cfi_rel_offset x29, 0 + .cfi_rel_offset x30, 8 + mov x29, sp + .cfi_def_cfa_register x29 + stp x19, x20, [sp,#16] + .cfi_rel_offset x19, 16 + .cfi_rel_offset x20, 24 + + # save methodIndex across function calls + mov w20, w1 + + # end of stack area passed to invoke_copy_to_stack + mov x1, sp + + # assume 8 bytes of stack for each argument with 16-byte alignment + add w19, w2, #1 + and w19, w19, #0xfffffffe + sub sp, sp, w19, uxth #3 + + # temporary place to store args passed in r0-r7,v0-v7 + sub sp, sp, #128 + + # save 'that' on stack + str x0, [sp] + + # start of stack area passed to invoke_copy_to_stack + mov x0, sp + bl SYM(invoke_copy_to_stack) + + # load arguments passed in r0-r7 + ldp x6, x7, [sp, #48] + ldp x4, x5, [sp, #32] + ldp x2, x3, [sp, #16] + ldp x0, x1, [sp],#64 + + # load arguments passed in v0-v7 + ldp d6, d7, [sp, #48] + ldp d4, d5, [sp, #32] + ldp d2, d3, [sp, #16] + ldp d0, d1, [sp],#64 + + # call the method + ldr x16, [x0] + add x16, x16, w20, uxth #3 + ldr x16, [x16] + blr x16 + + add sp, sp, w19, uxth #3 + .cfi_def_cfa_register sp + ldp x19, x20, [sp,#16] + .cfi_restore x19 + .cfi_restore x20 + ldp x29, x30, [sp],#32 + .cfi_adjust_cfa_offset -32 + .cfi_restore x29 + .cfi_restore x30 + ret + .cfi_endproc + +#ifndef __APPLE__ + .size _NS_InvokeByIndex, . - _NS_InvokeByIndex + + .section .note.GNU-stack, "", @progbits +#endif |