Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 116 insertions, 0 deletions

diff --git a/xpcom/reflect/xptcall/md/unix/xptcstubs_asm_mips.S b/xpcom/reflect/xptcall/md/unix/xptcstubs_asm_mips.S
new file mode 100644
index 0000000000..d17301634e
--- /dev/null
+++ b/xpcom/reflect/xptcall/md/unix/xptcstubs_asm_mips.S
@@ -0,0 +1,116 @@
+/* -*- 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)