xptcstubs_asm_mips64.S

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/* -*- 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/. */

#include <sys/regdef.h>

#include <sys/asm.h>

LOCALSZ=16

FRAMESZ=(((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK

A1OFF=FRAMESZ-(9*SZREG)

A2OFF=FRAMESZ-(8*SZREG)

A3OFF=FRAMESZ-(7*SZREG)

A4OFF=FRAMESZ-(6*SZREG)

A5OFF=FRAMESZ-(5*SZREG)

A6OFF=FRAMESZ-(4*SZREG)

A7OFF=FRAMESZ-(3*SZREG)

GPOFF=FRAMESZ-(2*SZREG)

RAOFF=FRAMESZ-(1*SZREG)

F13OFF=FRAMESZ-(16*SZREG)

F14OFF=FRAMESZ-(15*SZREG)

F15OFF=FRAMESZ-(14*SZREG)

F16OFF=FRAMESZ-(13*SZREG)

F17OFF=FRAMESZ-(12*SZREG)

F18OFF=FRAMESZ-(11*SZREG)

F19OFF=FRAMESZ-(10*SZREG)

#define SENTINEL_ENTRY(n)         /* defined in cpp file, not here */

#define STUB_ENTRY(x)                                   \

    .if x < 10;                                         \

    MAKE_STUB(x, _ZN14nsXPTCStubBase5Stub ##x ##Ev);    \

    .elseif x < 100;                                    \

    MAKE_STUB(x, _ZN14nsXPTCStubBase6Stub ##x ##Ev);    \

    .elseif x < 1000;                                   \

    MAKE_STUB(x, _ZN14nsXPTCStubBase7Stub ##x ##Ev);    \

    .else;                                              \

    .err;                                               \

    .endif

#define MAKE_STUB(x, name)                              \

    .globl   name;                                      \

    .type    name,@function;                            \

    .aent    name,0;                                    \

name:;                                                  \

    PTR_SUBU sp,FRAMESZ;                                \

    SETUP_GP64(GPOFF, name);                            \

    li       t0,x;                                      \

    b        sharedstub;                                \

# open a dummy frame for the function entries

    .text

    .align   2

    .type    dummy,@function

    .ent     dummy, 0

dummy:

    .frame   sp, FRAMESZ, ra

    .mask    0x90000FF0, RAOFF-FRAMESZ

    .fmask   0x000FF000, F19OFF-FRAMESZ

#include "xptcstubsdef.inc"

sharedstub:

    REG_S    a1, A1OFF(sp)

    REG_S    a2, A2OFF(sp)

    REG_S    a3, A3OFF(sp)

    REG_S    a4, A4OFF(sp)

    REG_S    a5, A5OFF(sp)

    REG_S    a6, A6OFF(sp)

    REG_S    a7, A7OFF(sp)

    REG_S    ra, RAOFF(sp)

    s.d      $f13, F13OFF(sp)

    s.d      $f14, F14OFF(sp)

    s.d      $f15, F15OFF(sp)

    s.d      $f16, F16OFF(sp)

    s.d      $f17, F17OFF(sp)

    s.d      $f18, F18OFF(sp)

    s.d      $f19, F19OFF(sp)

    # t0 is methodIndex

    move     a1, t0

    # a2 is stack address where extra function params

    # are stored that do not fit in registers

    move     a2, sp

    PTR_ADDI a2, FRAMESZ

    # a3 is stack address of a1..a7

    move     a3, sp

    PTR_ADDI a3, A1OFF

    # a4 is stack address of f13..f19

    move     a4, sp

    PTR_ADDI a4, F13OFF

    # PrepareAndDispatch(that, methodIndex, args, gprArgs, fpArgs)

    #                     a0       a1        a2     a3       a4

    jal      PrepareAndDispatch

    REG_L    ra, RAOFF(sp)

    RESTORE_GP64

    PTR_ADDU sp, FRAMESZ

    j        ra

    END(dummy)