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/* -*- Mode: asm; tab-width: 4; 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/. */
/* This code is for MIPS using the O32 ABI. */
#ifdef ANDROID
#include <asm/regdef.h>
#include <asm/asm.h>
#include <machine/asm.h>
#else
#include <sys/regdef.h>
#include <sys/asm.h>
#endif
# NARGSAVE is the argument space in the callers frame, including extra
# 'shadowed' space for the argument registers. The minimum of 4
# argument slots is sometimes predefined in the header files.
#ifndef NARGSAVE
#define NARGSAVE 4
#endif
#define LOCALSZ 2 /* gp, ra */
#define FRAMESZ ((((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK)
#define RAOFF (FRAMESZ - (1*SZREG))
#define GPOFF (FRAMESZ - (2*SZREG))
#define A0OFF (FRAMESZ + (0*SZREG))
#define A1OFF (FRAMESZ + (1*SZREG))
#define A2OFF (FRAMESZ + (2*SZREG))
#define A3OFF (FRAMESZ + (3*SZREG))
.text
#define STUB_ENTRY(x) \
.if x < 10; \
.globl _ZN14nsXPTCStubBase5Stub ##x ##Ev; \
.type _ZN14nsXPTCStubBase5Stub ##x ##Ev,@function; \
.aent _ZN14nsXPTCStubBase5Stub ##x ##Ev,0; \
_ZN14nsXPTCStubBase5Stub ##x ##Ev:; \
SETUP_GP; \
li t0,x; \
b sharedstub; \
.elseif x < 100; \
.globl _ZN14nsXPTCStubBase6Stub ##x ##Ev; \
.type _ZN14nsXPTCStubBase6Stub ##x ##Ev,@function; \
.aent _ZN14nsXPTCStubBase6Stub ##x ##Ev,0; \
_ZN14nsXPTCStubBase6Stub ##x ##Ev:; \
SETUP_GP; \
li t0,x; \
b sharedstub; \
.elseif x < 1000; \
.globl _ZN14nsXPTCStubBase7Stub ##x ##Ev; \
.type _ZN14nsXPTCStubBase7Stub ##x ##Ev,@function; \
.aent _ZN14nsXPTCStubBase7Stub ##x ##Ev,0; \
_ZN14nsXPTCStubBase7Stub ##x ##Ev:; \
SETUP_GP; \
li t0,x; \
b sharedstub; \
.else; \
.err; \
.endif
# SENTINEL_ENTRY is handled in the cpp file.
#define SENTINEL_ENTRY(x)
#
# open a dummy frame for the function entries
#
.align 2
.type dummy,@function
.ent dummy, 0
.frame sp, FRAMESZ, ra
dummy:
SETUP_GP
#include "xptcstubsdef.inc"
sharedstub:
subu sp, FRAMESZ
# specify the save register mask for gp, ra, a0-a3
.mask 0x900000F0, RAOFF-FRAMESZ
sw ra, RAOFF(sp)
SAVE_GP(GPOFF)
# Micro-optimization: a0 is already loaded, and its slot gets
# ignored by PrepareAndDispatch, so no need to save it here.
# sw a0, A0OFF(sp)
sw a1, A1OFF(sp)
sw a2, A2OFF(sp)
sw a3, A3OFF(sp)
la t9, PrepareAndDispatch
# t0 is methodIndex
move a1, t0
# have a2 point to the begin of the argument space on stack
addiu a2, sp, FRAMESZ
# PrepareAndDispatch(that, methodIndex, args)
jalr t9
# Micro-optimization: Using jalr explicitly has the side-effect
# of not triggering .cprestore. This is ok because we have no
# gp reference below this point. It also allows better
# instruction sscheduling.
# lw gp, GPOFF(fp)
lw ra, RAOFF(sp)
addiu sp, FRAMESZ
j ra
END(dummy)
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