michael@0: /* -*- Mode: asm; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* This code is for MIPS using the O32 ABI. */
michael@0: 
michael@0: #ifdef ANDROID
michael@0: #include <asm/regdef.h>
michael@0: #include <asm/asm.h>
michael@0: #include <machine/asm.h>
michael@0: #else
michael@0: #include <sys/regdef.h>
michael@0: #include <sys/asm.h>
michael@0: #endif
michael@0: 
michael@0: # NARGSAVE is the argument space in the callers frame, including extra
michael@0: # 'shadowed' space for the argument registers. The minimum of 4
michael@0: # argument slots is sometimes predefined in the header files.
michael@0: #ifndef NARGSAVE
michael@0: #define NARGSAVE 4
michael@0: #endif
michael@0: 
michael@0: #define LOCALSZ 2	/* gp, ra */
michael@0: #define FRAMESZ ((((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK)
michael@0: 
michael@0: #define RAOFF (FRAMESZ - (1*SZREG))
michael@0: #define GPOFF (FRAMESZ - (2*SZREG))
michael@0: 
michael@0: #define A0OFF (FRAMESZ + (0*SZREG))
michael@0: #define A1OFF (FRAMESZ + (1*SZREG))
michael@0: #define A2OFF (FRAMESZ + (2*SZREG))
michael@0: #define A3OFF (FRAMESZ + (3*SZREG))
michael@0: 
michael@0: 	.text
michael@0: 
michael@0: #define STUB_ENTRY(x)						\
michael@0: 	.if x < 10;						\
michael@0: 	.globl	_ZN14nsXPTCStubBase5Stub ##x ##Ev;		\
michael@0: 	.type	_ZN14nsXPTCStubBase5Stub ##x ##Ev,@function;	\
michael@0: 	.aent	_ZN14nsXPTCStubBase5Stub ##x ##Ev,0;		\
michael@0: _ZN14nsXPTCStubBase5Stub ##x ##Ev:;				\
michael@0: 	SETUP_GP;						\
michael@0: 	li	t0,x;						\
michael@0: 	b	sharedstub;					\
michael@0: 	.elseif x < 100;					\
michael@0: 	.globl	_ZN14nsXPTCStubBase6Stub ##x ##Ev;		\
michael@0: 	.type	_ZN14nsXPTCStubBase6Stub ##x ##Ev,@function;	\
michael@0: 	.aent	_ZN14nsXPTCStubBase6Stub ##x ##Ev,0;		\
michael@0: _ZN14nsXPTCStubBase6Stub ##x ##Ev:;				\
michael@0: 	SETUP_GP;						\
michael@0: 	li	t0,x;						\
michael@0: 	b	sharedstub;					\
michael@0: 	.elseif x < 1000;					\
michael@0: 	.globl	_ZN14nsXPTCStubBase7Stub ##x ##Ev;		\
michael@0: 	.type	_ZN14nsXPTCStubBase7Stub ##x ##Ev,@function;	\
michael@0: 	.aent	_ZN14nsXPTCStubBase7Stub ##x ##Ev,0;		\
michael@0: _ZN14nsXPTCStubBase7Stub ##x ##Ev:;				\
michael@0: 	SETUP_GP;						\
michael@0: 	li	t0,x;						\
michael@0: 	b	sharedstub;					\
michael@0: 	.else;							\
michael@0: 	.err;							\
michael@0: 	.endif
michael@0: 
michael@0: # SENTINEL_ENTRY is handled in the cpp file.
michael@0: #define SENTINEL_ENTRY(x)
michael@0: 
michael@0: #
michael@0: # open a dummy frame for the function entries
michael@0: #
michael@0: 	.align	2
michael@0: 	.type	dummy,@function
michael@0: 	.ent	dummy, 0
michael@0: 	.frame	sp, FRAMESZ, ra 
michael@0: dummy:
michael@0: 	SETUP_GP
michael@0: 
michael@0: #include "xptcstubsdef.inc"
michael@0: 
michael@0: sharedstub:
michael@0: 	subu	sp, FRAMESZ
michael@0: 
michael@0: 	# specify the save register mask for gp, ra, a0-a3
michael@0: 	.mask 0x900000F0, RAOFF-FRAMESZ
michael@0: 
michael@0: 	sw	ra, RAOFF(sp)
michael@0: 	SAVE_GP(GPOFF)
michael@0: 
michael@0: 	# Micro-optimization: a0 is already loaded, and its slot gets
michael@0: 	# ignored by PrepareAndDispatch, so no need to save it here.
michael@0: 	# sw	a0, A0OFF(sp)
michael@0: 	sw	a1, A1OFF(sp)
michael@0: 	sw	a2, A2OFF(sp)
michael@0: 	sw	a3, A3OFF(sp)
michael@0: 
michael@0: 	la	t9, PrepareAndDispatch
michael@0: 
michael@0: 	# t0 is methodIndex
michael@0: 	move	a1, t0
michael@0: 	# have a2 point to the begin of the argument space on stack
michael@0: 	addiu	a2, sp, FRAMESZ
michael@0: 
michael@0: 	# PrepareAndDispatch(that, methodIndex, args)
michael@0: 	jalr	t9
michael@0: 
michael@0: 	# Micro-optimization: Using jalr explicitly has the side-effect
michael@0: 	# of not triggering .cprestore. This is ok because we have no
michael@0: 	# gp reference below this point. It also allows better
michael@0: 	# instruction sscheduling.
michael@0: 	# lw	gp, GPOFF(fp)
michael@0:  
michael@0:  	lw	ra, RAOFF(sp)
michael@0: 	addiu	sp, FRAMESZ
michael@0: 	j	ra
michael@0: 	END(dummy)