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/* -*- Mode: asm -*- */
/* 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/. */
.text
.globl _SharedStub
dnl
define(STUB_MANGLED_ENTRY,
` .globl '$2`
.align 2
'$2`:
addi r12, 0,'$1`
b _SharedStub')
dnl
define(STUB_ENTRY,
` .if '$1` < 10
STUB_MANGLED_ENTRY('$1`, `__ZN14nsXPTCStubBase5Stub'$1`Ev')
.elseif '$1` < 100
STUB_MANGLED_ENTRY('$1`, `__ZN14nsXPTCStubBase6Stub'$1`Ev')
.elseif '$1` < 1000
STUB_MANGLED_ENTRY('$1`, `__ZN14nsXPTCStubBase7Stub'$1`Ev')
.else
.err "Stub'$1` >= 1000 not yet supported."
.endif
')
dnl
define(SENTINEL_ENTRY, `')
dnl
include(xptcstubsdef.inc)
dnl
// See also xptcstubs_ppc_rhapsody.cpp:PrepareAndDispatch.
_SharedStub:
// Prolog(ue)
mflr r0 // Save the link register in the caller's
stw r0, 8(r1) // stack frame
stwu r1,-176(r1) // Allocate stack space for our own frame and
// adjust stack pointer
// Linkage area, 0(r1) to 24(r1)
// Original sp saved at 0(r1)
// Parameter area, 20 bytes from 24(r1) to
// 44(r1) to accomodate 5 arguments passed
// to PrepareAndDispatch
// Local variables, 132 bytes from 44(r1)
// to 176(r1), to accomodate 5 words and
// 13 doubles
stw r4, 44(r1) // Save parameters passed in GPRs r4-r10;
stw r5, 48(r1) // a pointer to here will be passed to
stw r6, 52(r1) // PrepareAndDispatch for access to
stw r7, 56(r1) // arguments passed in registers. r3,
stw r8, 60(r1) // the self pointer, is used for the
stw r9, 64(r1) // call but isn't otherwise needed in
stw r10, 68(r1) // PrepareAndDispatch, so it is not saved.
stfd f1, 72(r1) // Do the same for floating-point parameters
stfd f2, 80(r1) // passed in FPRs f1-f13
stfd f3, 88(r1)
stfd f4, 96(r1)
stfd f5, 104(r1)
stfd f6, 112(r1)
stfd f7, 120(r1)
stfd f8, 128(r1)
stfd f9, 136(r1)
stfd f10, 144(r1)
stfd f11, 152(r1)
stfd f12, 160(r1)
stfd f13, 168(r1)
// Set up parameters for call to
// PrepareAndDispatch. argument=
// 0, pointer to self, already in r3
mr r4,r12 // 1, stub number
addi r5, r1, 204 // 2, pointer to the parameter area in our
// caller's stack, for access to
// parameters beyond those passed in
// registers. Skip past the first parameter
// (corresponding to r3) for the same reason
// as above. 176 (size of our frame) + 24
// (size of caller's linkage) + 4 (skipped
// parameter)
addi r6, r1, 44 // 3, pointer to saved GPRs
addi r7, r1, 72 // 4, pointer to saved FPRs
bl L_PrepareAndDispatch$stub
// Do it
nop // Leave room for linker magic
// Epilog(ue)
lwz r0, 184(r1) // Retrieve old link register value
addi r1, r1, 176 // Restore stack pointer
mtlr r0 // Restore link register
blr // Return
.picsymbol_stub
L_PrepareAndDispatch$stub: // Standard PIC symbol stub
.indirect_symbol _PrepareAndDispatch
mflr r0
bcl 20,31,L1$pb
L1$pb:
mflr r11
addis r11,r11,ha16(L1$lz-L1$pb)
mtlr r0
lwz r12,lo16(L1$lz-L1$pb)(r11)
mtctr r12
addi r11,r11,lo16(L1$lz-L1$pb)
bctr
.lazy_symbol_pointer
L1$lz:
.indirect_symbol _PrepareAndDispatch
.long dyld_stub_binding_helper
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