Add libc++ and libc++abi to third-party.

third_party/libc++abi/src/Unwind/UnwindRegistersRestore.s

+//===-------------------- UnwindRegistersRestore.s ------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+
+#if __i386__
+  .text
+  .globl __ZN9libunwind13Registers_x866jumptoEv
+  .private_extern __ZN9libunwind13Registers_x866jumptoEv
+__ZN9libunwind13Registers_x866jumptoEv:
+#
+# void libunwind::Registers_x86::jumpto()
+#
+# On entry:
+#  +                       +
+#  +-----------------------+
+#  + thread_state pointer  +
+#  +-----------------------+
+#  + return address        +
+#  +-----------------------+   <-- SP
+#  +                       +
+  movl   4(%esp), %eax
+  # set up eax and ret on new stack location
+  movl  28(%eax), %edx # edx holds new stack pointer
+  subl  $8,%edx
+  movl  %edx, 28(%eax)
+  movl  0(%eax), %ebx
+  movl  %ebx, 0(%edx)
+  movl  40(%eax), %ebx
+  movl  %ebx, 4(%edx)
+  # we now have ret and eax pushed onto where new stack will be
+  # restore all registers
+  movl   4(%eax), %ebx
+  movl   8(%eax), %ecx
+  movl  12(%eax), %edx
+  movl  16(%eax), %edi
+  movl  20(%eax), %esi
+  movl  24(%eax), %ebp
+  movl  28(%eax), %esp
+  # skip ss
+  # skip eflags
+  pop    %eax  # eax was already pushed on new stack
+  ret        # eip was already pushed on new stack
+  # skip cs
+  # skip ds
+  # skip es
+  # skip fs
+  # skip gs
+
+#elif __x86_64__
+
+  .text
+  .globl __ZN9libunwind16Registers_x86_646jumptoEv
+  .private_extern __ZN9libunwind16Registers_x86_646jumptoEv
+__ZN9libunwind16Registers_x86_646jumptoEv:
+#
+# void libunwind::Registers_x86_64::jumpto()
+#
+# On entry, thread_state pointer is in rdi
+
+  movq  56(%rdi), %rax # rax holds new stack pointer
+  subq  $16, %rax
+  movq  %rax, 56(%rdi)
+  movq  32(%rdi), %rbx  # store new rdi on new stack
+  movq  %rbx, 0(%rax)
+  movq  128(%rdi), %rbx # store new rip on new stack
+  movq  %rbx, 8(%rax)
+  # restore all registers
+  movq    0(%rdi), %rax
+  movq    8(%rdi), %rbx
+  movq   16(%rdi), %rcx
+  movq   24(%rdi), %rdx
+  # restore rdi later
+  movq   40(%rdi), %rsi
+  movq   48(%rdi), %rbp
+  # restore rsp later
+  movq   64(%rdi), %r8
+  movq   72(%rdi), %r9
+  movq   80(%rdi), %r10
+  movq   88(%rdi), %r11
+  movq   96(%rdi), %r12
+  movq  104(%rdi), %r13
+  movq  112(%rdi), %r14
+  movq  120(%rdi), %r15
+  # skip rflags
+  # skip cs
+  # skip fs
+  # skip gs
+  movq  56(%rdi), %rsp  # cut back rsp to new location
+  pop    %rdi      # rdi was saved here earlier
+  ret            # rip was saved here
+
+
+#elif __ppc__
+
+  .text
+  .globl __ZN9libunwind13Registers_ppc6jumptoEv
+  .private_extern __ZN9libunwind13Registers_ppc6jumptoEv
+__ZN9libunwind13Registers_ppc6jumptoEv:
+;
+; void libunwind::Registers_ppc::jumpto()
+;
+; On entry:
+;  thread_state pointer is in r3
+;
+
+  ; restore integral registerrs
+  ; skip r0 for now
+  ; skip r1 for now
+  lwz     r2, 16(r3)
+  ; skip r3 for now
+  ; skip r4 for now
+  ; skip r5 for now
+  lwz     r6, 32(r3)
+  lwz     r7, 36(r3)
+  lwz     r8, 40(r3)
+  lwz     r9, 44(r3)
+  lwz    r10, 48(r3)
+  lwz    r11, 52(r3)
+  lwz    r12, 56(r3)
+  lwz    r13, 60(r3)
+  lwz    r14, 64(r3)
+  lwz    r15, 68(r3)
+  lwz    r16, 72(r3)
+  lwz    r17, 76(r3)
+  lwz    r18, 80(r3)
+  lwz    r19, 84(r3)
+  lwz    r20, 88(r3)
+  lwz    r21, 92(r3)
+  lwz    r22, 96(r3)
+  lwz    r23,100(r3)
+  lwz    r24,104(r3)
+  lwz    r25,108(r3)
+  lwz    r26,112(r3)
+  lwz    r27,116(r3)
+  lwz    r28,120(r3)
+  lwz    r29,124(r3)
+  lwz    r30,128(r3)
+  lwz    r31,132(r3)
+
+  ; restore float registers
+  lfd    f0, 160(r3)
+  lfd    f1, 168(r3)
+  lfd    f2, 176(r3)
+  lfd    f3, 184(r3)
+  lfd    f4, 192(r3)
+  lfd    f5, 200(r3)
+  lfd    f6, 208(r3)
+  lfd    f7, 216(r3)
+  lfd    f8, 224(r3)
+  lfd    f9, 232(r3)
+  lfd    f10,240(r3)
+  lfd    f11,248(r3)
+  lfd    f12,256(r3)
+  lfd    f13,264(r3)
+  lfd    f14,272(r3)
+  lfd    f15,280(r3)
+  lfd    f16,288(r3)
+  lfd    f17,296(r3)
+  lfd    f18,304(r3)
+  lfd    f19,312(r3)
+  lfd    f20,320(r3)
+  lfd    f21,328(r3)
+  lfd    f22,336(r3)
+  lfd    f23,344(r3)
+  lfd    f24,352(r3)
+  lfd    f25,360(r3)
+  lfd    f26,368(r3)
+  lfd    f27,376(r3)
+  lfd    f28,384(r3)
+  lfd    f29,392(r3)
+  lfd    f30,400(r3)
+  lfd    f31,408(r3)
+
+  ; restore vector registers if any are in use
+  lwz    r5,156(r3)  ; test VRsave
+  cmpwi  r5,0
+  beq    Lnovec
+
+  subi  r4,r1,16
+  rlwinm  r4,r4,0,0,27  ; mask low 4-bits
+  ; r4 is now a 16-byte aligned pointer into the red zone
+  ; the _vectorRegisters may not be 16-byte aligned so copy via red zone temp buffer
+
+
+#define LOAD_VECTOR_UNALIGNEDl(_index) \
+  andis.  r0,r5,(1<<(15-_index))  @\
+  beq    Ldone  ## _index     @\
+  lwz    r0, 424+_index*16(r3)  @\
+  stw    r0, 0(r4)        @\
+  lwz    r0, 424+_index*16+4(r3)  @\
+  stw    r0, 4(r4)        @\
+  lwz    r0, 424+_index*16+8(r3)  @\
+  stw    r0, 8(r4)        @\
+  lwz    r0, 424+_index*16+12(r3)@\
+  stw    r0, 12(r4)        @\
+  lvx    v ## _index,0,r4    @\
+Ldone  ## _index:
+
+#define LOAD_VECTOR_UNALIGNEDh(_index) \
+  andi.  r0,r5,(1<<(31-_index))  @\
+  beq    Ldone  ## _index    @\
+  lwz    r0, 424+_index*16(r3)  @\
+  stw    r0, 0(r4)        @\
+  lwz    r0, 424+_index*16+4(r3)  @\
+  stw    r0, 4(r4)        @\
+  lwz    r0, 424+_index*16+8(r3)  @\
+  stw    r0, 8(r4)        @\
+  lwz    r0, 424+_index*16+12(r3)@\
+  stw    r0, 12(r4)        @\
+  lvx    v ## _index,0,r4    @\
+  Ldone  ## _index:
+
+
+  LOAD_VECTOR_UNALIGNEDl(0)
+  LOAD_VECTOR_UNALIGNEDl(1)
+  LOAD_VECTOR_UNALIGNEDl(2)
+  LOAD_VECTOR_UNALIGNEDl(3)
+  LOAD_VECTOR_UNALIGNEDl(4)
+  LOAD_VECTOR_UNALIGNEDl(5)
+  LOAD_VECTOR_UNALIGNEDl(6)
+  LOAD_VECTOR_UNALIGNEDl(7)
+  LOAD_VECTOR_UNALIGNEDl(8)
+  LOAD_VECTOR_UNALIGNEDl(9)
+  LOAD_VECTOR_UNALIGNEDl(10)
+  LOAD_VECTOR_UNALIGNEDl(11)
+  LOAD_VECTOR_UNALIGNEDl(12)
+  LOAD_VECTOR_UNALIGNEDl(13)
+  LOAD_VECTOR_UNALIGNEDl(14)
+  LOAD_VECTOR_UNALIGNEDl(15)
+  LOAD_VECTOR_UNALIGNEDh(16)
+  LOAD_VECTOR_UNALIGNEDh(17)
+  LOAD_VECTOR_UNALIGNEDh(18)
+  LOAD_VECTOR_UNALIGNEDh(19)
+  LOAD_VECTOR_UNALIGNEDh(20)
+  LOAD_VECTOR_UNALIGNEDh(21)
+  LOAD_VECTOR_UNALIGNEDh(22)
+  LOAD_VECTOR_UNALIGNEDh(23)
+  LOAD_VECTOR_UNALIGNEDh(24)
+  LOAD_VECTOR_UNALIGNEDh(25)
+  LOAD_VECTOR_UNALIGNEDh(26)
+  LOAD_VECTOR_UNALIGNEDh(27)
+  LOAD_VECTOR_UNALIGNEDh(28)
+  LOAD_VECTOR_UNALIGNEDh(29)
+  LOAD_VECTOR_UNALIGNEDh(30)
+  LOAD_VECTOR_UNALIGNEDh(31)
+
+Lnovec:
+  lwz    r0, 136(r3) ; __cr
+  mtocrf  255,r0
+  lwz    r0, 148(r3) ; __ctr
+  mtctr  r0
+  lwz    r0, 0(r3)  ; __ssr0
+  mtctr  r0
+  lwz    r0, 8(r3)  ; do r0 now
+  lwz    r5,28(r3)  ; do r5 now
+  lwz    r4,24(r3)  ; do r4 now
+  lwz    r1,12(r3)  ; do sp now
+  lwz    r3,20(r3)  ; do r3 last
+  bctr
+
+#elif __arm64__
+
+  .text
+  .globl __ZN9libunwind15Registers_arm646jumptoEv
+  .private_extern __ZN9libunwind15Registers_arm646jumptoEv
+__ZN9libunwind15Registers_arm646jumptoEv:
+;
+; void libunwind::Registers_arm64::jumpto()
+;
+; On entry:
+;  thread_state pointer is in x0
+;
+  ; skip restore of x0,x1 for now
+  ldp    x2, x3,  [x0, #0x010]
+  ldp    x4, x5,  [x0, #0x020]
+  ldp    x6, x7,  [x0, #0x030]
+  ldp    x8, x9,  [x0, #0x040]
+  ldp    x10,x11, [x0, #0x050]
+  ldp    x12,x13, [x0, #0x060]
+  ldp    x14,x15, [x0, #0x070]
+  ldp    x16,x17, [x0, #0x080]
+  ldp    x18,x19, [x0, #0x090]
+  ldp    x20,x21, [x0, #0x0A0]
+  ldp    x22,x23, [x0, #0x0B0]
+  ldp    x24,x25, [x0, #0x0C0]
+  ldp    x26,x27, [x0, #0x0D0]
+  ldp    x28,fp,  [x0, #0x0E0]
+  ldr    lr,      [x0, #0x100]  ; restore pc into lr
+  ldr    x1,      [x0, #0x0F8]
+  mov    sp,x1          ; restore sp
+
+  ldp    d0, d1,  [x0, #0x110]
+  ldp    d2, d3,  [x0, #0x120]
+  ldp    d4, d5,  [x0, #0x130]
+  ldp    d6, d7,  [x0, #0x140]
+  ldp    d8, d9,  [x0, #0x150]
+  ldp    d10,d11, [x0, #0x160]
+  ldp    d12,d13, [x0, #0x170]
+  ldp    d14,d15, [x0, #0x180]
+  ldp    d16,d17, [x0, #0x190]
+  ldp    d18,d19, [x0, #0x1A0]
+  ldp    d20,d21, [x0, #0x1B0]
+  ldp    d22,d23, [x0, #0x1C0]
+  ldp    d24,d25, [x0, #0x1D0]
+  ldp    d26,d27, [x0, #0x1E0]
+  ldp    d28,d29, [x0, #0x1F0]
+  ldr    d30,     [x0, #0x200]
+  ldr    d31,     [x0, #0x208]
+
+  ldp    x0, x1,  [x0, #0x000]  ; restore x0,x1
+  ret    lr            ; jump to pc
+
+
+
+
+#endif
+