forked from M-Labs/artiq-zynq
1038 lines
26 KiB
ArmAsm
1038 lines
26 KiB
ArmAsm
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//===-------------------- UnwindRegistersRestore.S ------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "assembly.h"
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.text
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#if !defined(__USING_SJLJ_EXCEPTIONS__)
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#if defined(__i386__)
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DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_x866jumptoEv)
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#
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# void libunwind::Registers_x86::jumpto()
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#
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#if defined(_WIN32)
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# On windows, the 'this' pointer is passed in ecx instead of on the stack
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movl %ecx, %eax
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#else
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# On entry:
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# + +
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# +-----------------------+
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# + thread_state pointer +
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# +-----------------------+
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# + return address +
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# +-----------------------+ <-- SP
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# + +
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movl 4(%esp), %eax
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#endif
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# set up eax and ret on new stack location
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movl 28(%eax), %edx # edx holds new stack pointer
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subl $8,%edx
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movl %edx, 28(%eax)
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movl 0(%eax), %ebx
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movl %ebx, 0(%edx)
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movl 40(%eax), %ebx
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movl %ebx, 4(%edx)
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# we now have ret and eax pushed onto where new stack will be
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# restore all registers
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movl 4(%eax), %ebx
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movl 8(%eax), %ecx
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movl 12(%eax), %edx
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movl 16(%eax), %edi
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movl 20(%eax), %esi
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movl 24(%eax), %ebp
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movl 28(%eax), %esp
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# skip ss
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# skip eflags
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pop %eax # eax was already pushed on new stack
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ret # eip was already pushed on new stack
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# skip cs
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# skip ds
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# skip es
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# skip fs
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# skip gs
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#elif defined(__x86_64__)
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DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind16Registers_x86_646jumptoEv)
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#
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# void libunwind::Registers_x86_64::jumpto()
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#
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#if defined(_WIN64)
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# On entry, thread_state pointer is in rcx; move it into rdi
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# to share restore code below. Since this routine restores and
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# overwrites all registers, we can use the same registers for
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# pointers and temporaries as on unix even though win64 normally
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# mustn't clobber some of them.
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movq %rcx, %rdi
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#else
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# On entry, thread_state pointer is in rdi
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#endif
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movq 56(%rdi), %rax # rax holds new stack pointer
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subq $16, %rax
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movq %rax, 56(%rdi)
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movq 32(%rdi), %rbx # store new rdi on new stack
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movq %rbx, 0(%rax)
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movq 128(%rdi), %rbx # store new rip on new stack
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movq %rbx, 8(%rax)
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# restore all registers
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movq 0(%rdi), %rax
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movq 8(%rdi), %rbx
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movq 16(%rdi), %rcx
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movq 24(%rdi), %rdx
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# restore rdi later
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movq 40(%rdi), %rsi
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movq 48(%rdi), %rbp
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# restore rsp later
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movq 64(%rdi), %r8
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movq 72(%rdi), %r9
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movq 80(%rdi), %r10
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movq 88(%rdi), %r11
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movq 96(%rdi), %r12
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movq 104(%rdi), %r13
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movq 112(%rdi), %r14
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movq 120(%rdi), %r15
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# skip rflags
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# skip cs
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# skip fs
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# skip gs
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#if defined(_WIN64)
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movdqu 176(%rdi),%xmm0
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movdqu 192(%rdi),%xmm1
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movdqu 208(%rdi),%xmm2
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movdqu 224(%rdi),%xmm3
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movdqu 240(%rdi),%xmm4
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movdqu 256(%rdi),%xmm5
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movdqu 272(%rdi),%xmm6
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movdqu 288(%rdi),%xmm7
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movdqu 304(%rdi),%xmm8
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movdqu 320(%rdi),%xmm9
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movdqu 336(%rdi),%xmm10
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movdqu 352(%rdi),%xmm11
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movdqu 368(%rdi),%xmm12
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movdqu 384(%rdi),%xmm13
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movdqu 400(%rdi),%xmm14
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movdqu 416(%rdi),%xmm15
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#endif
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movq 56(%rdi), %rsp # cut back rsp to new location
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pop %rdi # rdi was saved here earlier
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ret # rip was saved here
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#elif defined(__powerpc64__)
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DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind15Registers_ppc646jumptoEv)
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//
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// void libunwind::Registers_ppc64::jumpto()
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//
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// On entry:
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// thread_state pointer is in r3
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//
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// load register (GPR)
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#define PPC64_LR(n) \
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ld %r##n, (8 * (n + 2))(%r3)
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// restore integral registers
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// skip r0 for now
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// skip r1 for now
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PPC64_LR(2)
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// skip r3 for now
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// skip r4 for now
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// skip r5 for now
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PPC64_LR(6)
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PPC64_LR(7)
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PPC64_LR(8)
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PPC64_LR(9)
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PPC64_LR(10)
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PPC64_LR(11)
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PPC64_LR(12)
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PPC64_LR(13)
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PPC64_LR(14)
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PPC64_LR(15)
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PPC64_LR(16)
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PPC64_LR(17)
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PPC64_LR(18)
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PPC64_LR(19)
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PPC64_LR(20)
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PPC64_LR(21)
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PPC64_LR(22)
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PPC64_LR(23)
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PPC64_LR(24)
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PPC64_LR(25)
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PPC64_LR(26)
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PPC64_LR(27)
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PPC64_LR(28)
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PPC64_LR(29)
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PPC64_LR(30)
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PPC64_LR(31)
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#ifdef PPC64_HAS_VMX
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// restore VS registers
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// (note that this also restores floating point registers and V registers,
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// because part of VS is mapped to these registers)
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addi %r4, %r3, PPC64_OFFS_FP
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// load VS register
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#define PPC64_LVS(n) \
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lxvd2x %vs##n, 0, %r4 ;\
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addi %r4, %r4, 16
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// restore the first 32 VS regs (and also all floating point regs)
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PPC64_LVS(0)
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PPC64_LVS(1)
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PPC64_LVS(2)
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PPC64_LVS(3)
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PPC64_LVS(4)
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PPC64_LVS(5)
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PPC64_LVS(6)
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PPC64_LVS(7)
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PPC64_LVS(8)
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PPC64_LVS(9)
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PPC64_LVS(10)
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PPC64_LVS(11)
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PPC64_LVS(12)
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PPC64_LVS(13)
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PPC64_LVS(14)
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PPC64_LVS(15)
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PPC64_LVS(16)
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PPC64_LVS(17)
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PPC64_LVS(18)
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PPC64_LVS(19)
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PPC64_LVS(20)
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PPC64_LVS(21)
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PPC64_LVS(22)
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PPC64_LVS(23)
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PPC64_LVS(24)
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PPC64_LVS(25)
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PPC64_LVS(26)
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PPC64_LVS(27)
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PPC64_LVS(28)
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PPC64_LVS(29)
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PPC64_LVS(30)
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PPC64_LVS(31)
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// use VRSAVE to conditionally restore the remaining VS regs,
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// that are where the V regs are mapped
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ld %r5, PPC64_OFFS_VRSAVE(%r3) // test VRsave
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cmpwi %r5, 0
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beq Lnovec
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// conditionally load VS
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#define PPC64_CLVS_BOTTOM(n) \
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beq Ldone##n ;\
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addi %r4, %r3, PPC64_OFFS_FP + n * 16 ;\
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lxvd2x %vs##n, 0, %r4 ;\
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Ldone##n:
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#define PPC64_CLVSl(n) \
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andis. %r0, %r5, (1<<(47-n)) ;\
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PPC64_CLVS_BOTTOM(n)
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#define PPC64_CLVSh(n) \
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andi. %r0, %r5, (1<<(63-n)) ;\
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PPC64_CLVS_BOTTOM(n)
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PPC64_CLVSl(32)
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PPC64_CLVSl(33)
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PPC64_CLVSl(34)
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PPC64_CLVSl(35)
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PPC64_CLVSl(36)
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PPC64_CLVSl(37)
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PPC64_CLVSl(38)
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PPC64_CLVSl(39)
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PPC64_CLVSl(40)
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PPC64_CLVSl(41)
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PPC64_CLVSl(42)
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PPC64_CLVSl(43)
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PPC64_CLVSl(44)
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PPC64_CLVSl(45)
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PPC64_CLVSl(46)
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PPC64_CLVSl(47)
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PPC64_CLVSh(48)
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PPC64_CLVSh(49)
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PPC64_CLVSh(50)
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PPC64_CLVSh(51)
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PPC64_CLVSh(52)
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PPC64_CLVSh(53)
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PPC64_CLVSh(54)
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PPC64_CLVSh(55)
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PPC64_CLVSh(56)
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PPC64_CLVSh(57)
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PPC64_CLVSh(58)
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PPC64_CLVSh(59)
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PPC64_CLVSh(60)
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PPC64_CLVSh(61)
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PPC64_CLVSh(62)
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PPC64_CLVSh(63)
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#else
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// load FP register
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#define PPC64_LF(n) \
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lfd %f##n, (PPC64_OFFS_FP + n * 16)(%r3)
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// restore float registers
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PPC64_LF(0)
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PPC64_LF(1)
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PPC64_LF(2)
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PPC64_LF(3)
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PPC64_LF(4)
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PPC64_LF(5)
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PPC64_LF(6)
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PPC64_LF(7)
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PPC64_LF(8)
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PPC64_LF(9)
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PPC64_LF(10)
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PPC64_LF(11)
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PPC64_LF(12)
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PPC64_LF(13)
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PPC64_LF(14)
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PPC64_LF(15)
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PPC64_LF(16)
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PPC64_LF(17)
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PPC64_LF(18)
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PPC64_LF(19)
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PPC64_LF(20)
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PPC64_LF(21)
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PPC64_LF(22)
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PPC64_LF(23)
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PPC64_LF(24)
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PPC64_LF(25)
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PPC64_LF(26)
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PPC64_LF(27)
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PPC64_LF(28)
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PPC64_LF(29)
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PPC64_LF(30)
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PPC64_LF(31)
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// restore vector registers if any are in use
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ld %r5, PPC64_OFFS_VRSAVE(%r3) // test VRsave
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cmpwi %r5, 0
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beq Lnovec
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subi %r4, %r1, 16
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// r4 is now a 16-byte aligned pointer into the red zone
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// the _vectorScalarRegisters may not be 16-byte aligned
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// so copy via red zone temp buffer
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#define PPC64_CLV_UNALIGNED_BOTTOM(n) \
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beq Ldone##n ;\
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ld %r0, (PPC64_OFFS_V + n * 16)(%r3) ;\
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std %r0, 0(%r4) ;\
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ld %r0, (PPC64_OFFS_V + n * 16 + 8)(%r3) ;\
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std %r0, 8(%r4) ;\
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lvx %v##n, 0, %r4 ;\
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Ldone ## n:
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#define PPC64_CLV_UNALIGNEDl(n) \
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andis. %r0, %r5, (1<<(15-n)) ;\
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PPC64_CLV_UNALIGNED_BOTTOM(n)
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#define PPC64_CLV_UNALIGNEDh(n) \
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andi. %r0, %r5, (1<<(31-n)) ;\
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PPC64_CLV_UNALIGNED_BOTTOM(n)
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PPC64_CLV_UNALIGNEDl(0)
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PPC64_CLV_UNALIGNEDl(1)
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PPC64_CLV_UNALIGNEDl(2)
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PPC64_CLV_UNALIGNEDl(3)
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PPC64_CLV_UNALIGNEDl(4)
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PPC64_CLV_UNALIGNEDl(5)
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PPC64_CLV_UNALIGNEDl(6)
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PPC64_CLV_UNALIGNEDl(7)
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PPC64_CLV_UNALIGNEDl(8)
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PPC64_CLV_UNALIGNEDl(9)
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PPC64_CLV_UNALIGNEDl(10)
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PPC64_CLV_UNALIGNEDl(11)
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PPC64_CLV_UNALIGNEDl(12)
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PPC64_CLV_UNALIGNEDl(13)
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PPC64_CLV_UNALIGNEDl(14)
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PPC64_CLV_UNALIGNEDl(15)
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PPC64_CLV_UNALIGNEDh(16)
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PPC64_CLV_UNALIGNEDh(17)
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PPC64_CLV_UNALIGNEDh(18)
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PPC64_CLV_UNALIGNEDh(19)
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PPC64_CLV_UNALIGNEDh(20)
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PPC64_CLV_UNALIGNEDh(21)
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PPC64_CLV_UNALIGNEDh(22)
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PPC64_CLV_UNALIGNEDh(23)
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PPC64_CLV_UNALIGNEDh(24)
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PPC64_CLV_UNALIGNEDh(25)
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PPC64_CLV_UNALIGNEDh(26)
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PPC64_CLV_UNALIGNEDh(27)
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PPC64_CLV_UNALIGNEDh(28)
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PPC64_CLV_UNALIGNEDh(29)
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PPC64_CLV_UNALIGNEDh(30)
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PPC64_CLV_UNALIGNEDh(31)
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#endif
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Lnovec:
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ld %r0, PPC64_OFFS_CR(%r3)
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mtcr %r0
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ld %r0, PPC64_OFFS_SRR0(%r3)
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mtctr %r0
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PPC64_LR(0)
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PPC64_LR(5)
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PPC64_LR(4)
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PPC64_LR(1)
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PPC64_LR(3)
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bctr
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#elif defined(__ppc__)
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DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_ppc6jumptoEv)
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//
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// void libunwind::Registers_ppc::jumpto()
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//
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// On entry:
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// thread_state pointer is in r3
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//
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// restore integral registerrs
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// skip r0 for now
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// skip r1 for now
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lwz %r2, 16(%r3)
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// skip r3 for now
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// skip r4 for now
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// skip r5 for now
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lwz %r6, 32(%r3)
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||
|
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)) SEPARATOR \
|
||
|
beq Ldone ## _index SEPARATOR \
|
||
|
lwz %r0, 424+_index*16(%r3) SEPARATOR \
|
||
|
stw %r0, 0(%r4) SEPARATOR \
|
||
|
lwz %r0, 424+_index*16+4(%r3) SEPARATOR \
|
||
|
stw %r0, 4(%r4) SEPARATOR \
|
||
|
lwz %r0, 424+_index*16+8(%r3) SEPARATOR \
|
||
|
stw %r0, 8(%r4) SEPARATOR \
|
||
|
lwz %r0, 424+_index*16+12(%r3) SEPARATOR \
|
||
|
stw %r0, 12(%r4) SEPARATOR \
|
||
|
lvx %v ## _index, 0, %r4 SEPARATOR \
|
||
|
Ldone ## _index:
|
||
|
|
||
|
#define LOAD_VECTOR_UNALIGNEDh(_index) \
|
||
|
andi. %r0, %r5, (1<<(31-_index)) SEPARATOR \
|
||
|
beq Ldone ## _index SEPARATOR \
|
||
|
lwz %r0, 424+_index*16(%r3) SEPARATOR \
|
||
|
stw %r0, 0(%r4) SEPARATOR \
|
||
|
lwz %r0, 424+_index*16+4(%r3) SEPARATOR \
|
||
|
stw %r0, 4(%r4) SEPARATOR \
|
||
|
lwz %r0, 424+_index*16+8(%r3) SEPARATOR \
|
||
|
stw %r0, 8(%r4) SEPARATOR \
|
||
|
lwz %r0, 424+_index*16+12(%r3) SEPARATOR \
|
||
|
stw %r0, 12(%r4) SEPARATOR \
|
||
|
lvx %v ## _index, 0, %r4 SEPARATOR \
|
||
|
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
|
||
|
mtcr %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 defined(__arm64__) || defined(__aarch64__)
|
||
|
|
||
|
//
|
||
|
// void libunwind::Registers_arm64::jumpto()
|
||
|
//
|
||
|
// On entry:
|
||
|
// thread_state pointer is in x0
|
||
|
//
|
||
|
.p2align 2
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind15Registers_arm646jumptoEv)
|
||
|
// 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]
|
||
|
// x16 and x17 were clobbered by the call into the unwinder, so no point in
|
||
|
// restoring them.
|
||
|
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,x29, [x0, #0x0E0]
|
||
|
ldr x30, [x0, #0x100] // restore pc into lr
|
||
|
|
||
|
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]
|
||
|
|
||
|
// Finally, restore sp. This must be done after the the last read from the
|
||
|
// context struct, because it is allocated on the stack, and an exception
|
||
|
// could clobber the de-allocated portion of the stack after sp has been
|
||
|
// restored.
|
||
|
ldr x16, [x0, #0x0F8]
|
||
|
ldp x0, x1, [x0, #0x000] // restore x0,x1
|
||
|
mov sp,x16 // restore sp
|
||
|
ret x30 // jump to pc
|
||
|
|
||
|
#elif defined(__arm__) && !defined(__APPLE__)
|
||
|
|
||
|
#if !defined(__ARM_ARCH_ISA_ARM)
|
||
|
#if (__ARM_ARCH_ISA_THUMB == 2)
|
||
|
.syntax unified
|
||
|
#endif
|
||
|
.thumb
|
||
|
#endif
|
||
|
|
||
|
@
|
||
|
@ void libunwind::Registers_arm::restoreCoreAndJumpTo()
|
||
|
@
|
||
|
@ On entry:
|
||
|
@ thread_state pointer is in r0
|
||
|
@
|
||
|
.p2align 2
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm20restoreCoreAndJumpToEv)
|
||
|
#if !defined(__ARM_ARCH_ISA_ARM) && __ARM_ARCH_ISA_THUMB == 1
|
||
|
@ r8-r11: ldm into r1-r4, then mov to r8-r11
|
||
|
adds r0, #0x20
|
||
|
ldm r0!, {r1-r4}
|
||
|
subs r0, #0x30
|
||
|
mov r8, r1
|
||
|
mov r9, r2
|
||
|
mov r10, r3
|
||
|
mov r11, r4
|
||
|
@ r12 does not need loading, it it the intra-procedure-call scratch register
|
||
|
ldr r2, [r0, #0x34]
|
||
|
ldr r3, [r0, #0x3c]
|
||
|
mov sp, r2
|
||
|
mov lr, r3 @ restore pc into lr
|
||
|
ldm r0, {r0-r7}
|
||
|
#else
|
||
|
@ Use lr as base so that r0 can be restored.
|
||
|
mov lr, r0
|
||
|
@ 32bit thumb-2 restrictions for ldm:
|
||
|
@ . the sp (r13) cannot be in the list
|
||
|
@ . the pc (r15) and lr (r14) cannot both be in the list in an LDM instruction
|
||
|
ldm lr, {r0-r12}
|
||
|
ldr sp, [lr, #52]
|
||
|
ldr lr, [lr, #60] @ restore pc into lr
|
||
|
#endif
|
||
|
JMP(lr)
|
||
|
|
||
|
@
|
||
|
@ static void libunwind::Registers_arm::restoreVFPWithFLDMD(unw_fpreg_t* values)
|
||
|
@
|
||
|
@ On entry:
|
||
|
@ values pointer is in r0
|
||
|
@
|
||
|
.p2align 2
|
||
|
#if defined(__ELF__)
|
||
|
.fpu vfpv3-d16
|
||
|
#endif
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm19restoreVFPWithFLDMDEPv)
|
||
|
@ VFP and iwMMX instructions are only available when compiling with the flags
|
||
|
@ that enable them. We do not want to do that in the library (because we do not
|
||
|
@ want the compiler to generate instructions that access those) but this is
|
||
|
@ only accessed if the personality routine needs these registers. Use of
|
||
|
@ these registers implies they are, actually, available on the target, so
|
||
|
@ it's ok to execute.
|
||
|
@ So, generate the instruction using the corresponding coprocessor mnemonic.
|
||
|
vldmia r0, {d0-d15}
|
||
|
JMP(lr)
|
||
|
|
||
|
@
|
||
|
@ static void libunwind::Registers_arm::restoreVFPWithFLDMX(unw_fpreg_t* values)
|
||
|
@
|
||
|
@ On entry:
|
||
|
@ values pointer is in r0
|
||
|
@
|
||
|
.p2align 2
|
||
|
#if defined(__ELF__)
|
||
|
.fpu vfpv3-d16
|
||
|
#endif
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm19restoreVFPWithFLDMXEPv)
|
||
|
vldmia r0, {d0-d15} @ fldmiax is deprecated in ARMv7+ and now behaves like vldmia
|
||
|
JMP(lr)
|
||
|
|
||
|
@
|
||
|
@ static void libunwind::Registers_arm::restoreVFPv3(unw_fpreg_t* values)
|
||
|
@
|
||
|
@ On entry:
|
||
|
@ values pointer is in r0
|
||
|
@
|
||
|
.p2align 2
|
||
|
#if defined(__ELF__)
|
||
|
.fpu vfpv3
|
||
|
#endif
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm12restoreVFPv3EPv)
|
||
|
vldmia r0, {d16-d31}
|
||
|
JMP(lr)
|
||
|
|
||
|
#if defined(__ARM_WMMX)
|
||
|
|
||
|
@
|
||
|
@ static void libunwind::Registers_arm::restoreiWMMX(unw_fpreg_t* values)
|
||
|
@
|
||
|
@ On entry:
|
||
|
@ values pointer is in r0
|
||
|
@
|
||
|
.p2align 2
|
||
|
#if defined(__ELF__)
|
||
|
.arch armv5te
|
||
|
#endif
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm12restoreiWMMXEPv)
|
||
|
ldcl p1, cr0, [r0], #8 @ wldrd wR0, [r0], #8
|
||
|
ldcl p1, cr1, [r0], #8 @ wldrd wR1, [r0], #8
|
||
|
ldcl p1, cr2, [r0], #8 @ wldrd wR2, [r0], #8
|
||
|
ldcl p1, cr3, [r0], #8 @ wldrd wR3, [r0], #8
|
||
|
ldcl p1, cr4, [r0], #8 @ wldrd wR4, [r0], #8
|
||
|
ldcl p1, cr5, [r0], #8 @ wldrd wR5, [r0], #8
|
||
|
ldcl p1, cr6, [r0], #8 @ wldrd wR6, [r0], #8
|
||
|
ldcl p1, cr7, [r0], #8 @ wldrd wR7, [r0], #8
|
||
|
ldcl p1, cr8, [r0], #8 @ wldrd wR8, [r0], #8
|
||
|
ldcl p1, cr9, [r0], #8 @ wldrd wR9, [r0], #8
|
||
|
ldcl p1, cr10, [r0], #8 @ wldrd wR10, [r0], #8
|
||
|
ldcl p1, cr11, [r0], #8 @ wldrd wR11, [r0], #8
|
||
|
ldcl p1, cr12, [r0], #8 @ wldrd wR12, [r0], #8
|
||
|
ldcl p1, cr13, [r0], #8 @ wldrd wR13, [r0], #8
|
||
|
ldcl p1, cr14, [r0], #8 @ wldrd wR14, [r0], #8
|
||
|
ldcl p1, cr15, [r0], #8 @ wldrd wR15, [r0], #8
|
||
|
JMP(lr)
|
||
|
|
||
|
@
|
||
|
@ static void libunwind::Registers_arm::restoreiWMMXControl(unw_uint32_t* values)
|
||
|
@
|
||
|
@ On entry:
|
||
|
@ values pointer is in r0
|
||
|
@
|
||
|
.p2align 2
|
||
|
#if defined(__ELF__)
|
||
|
.arch armv5te
|
||
|
#endif
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm19restoreiWMMXControlEPj)
|
||
|
ldc2 p1, cr8, [r0], #4 @ wldrw wCGR0, [r0], #4
|
||
|
ldc2 p1, cr9, [r0], #4 @ wldrw wCGR1, [r0], #4
|
||
|
ldc2 p1, cr10, [r0], #4 @ wldrw wCGR2, [r0], #4
|
||
|
ldc2 p1, cr11, [r0], #4 @ wldrw wCGR3, [r0], #4
|
||
|
JMP(lr)
|
||
|
|
||
|
#endif
|
||
|
|
||
|
#elif defined(__or1k__)
|
||
|
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind14Registers_or1k6jumptoEv)
|
||
|
#
|
||
|
# void libunwind::Registers_or1k::jumpto()
|
||
|
#
|
||
|
# On entry:
|
||
|
# thread_state pointer is in r3
|
||
|
#
|
||
|
|
||
|
# restore integral registers
|
||
|
l.lwz r0, 0(r3)
|
||
|
l.lwz r1, 4(r3)
|
||
|
l.lwz r2, 8(r3)
|
||
|
# skip r3 for now
|
||
|
l.lwz r4, 16(r3)
|
||
|
l.lwz r5, 20(r3)
|
||
|
l.lwz r6, 24(r3)
|
||
|
l.lwz r7, 28(r3)
|
||
|
l.lwz r8, 32(r3)
|
||
|
# skip r9
|
||
|
l.lwz r10, 40(r3)
|
||
|
l.lwz r11, 44(r3)
|
||
|
l.lwz r12, 48(r3)
|
||
|
l.lwz r13, 52(r3)
|
||
|
l.lwz r14, 56(r3)
|
||
|
l.lwz r15, 60(r3)
|
||
|
l.lwz r16, 64(r3)
|
||
|
l.lwz r17, 68(r3)
|
||
|
l.lwz r18, 72(r3)
|
||
|
l.lwz r19, 76(r3)
|
||
|
l.lwz r20, 80(r3)
|
||
|
l.lwz r21, 84(r3)
|
||
|
l.lwz r22, 88(r3)
|
||
|
l.lwz r23, 92(r3)
|
||
|
l.lwz r24, 96(r3)
|
||
|
l.lwz r25,100(r3)
|
||
|
l.lwz r26,104(r3)
|
||
|
l.lwz r27,108(r3)
|
||
|
l.lwz r28,112(r3)
|
||
|
l.lwz r29,116(r3)
|
||
|
l.lwz r30,120(r3)
|
||
|
l.lwz r31,124(r3)
|
||
|
|
||
|
# at last, restore r3
|
||
|
l.lwz r3, 12(r3)
|
||
|
|
||
|
# load new pc into ra
|
||
|
l.lwz r9, 128(r3)
|
||
|
# jump to pc
|
||
|
l.jr r9
|
||
|
l.nop
|
||
|
|
||
|
#elif defined(__mips__) && defined(_ABIO32) && _MIPS_SIM == _ABIO32
|
||
|
|
||
|
//
|
||
|
// void libunwind::Registers_mips_o32::jumpto()
|
||
|
//
|
||
|
// On entry:
|
||
|
// thread state pointer is in a0 ($4)
|
||
|
//
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind18Registers_mips_o326jumptoEv)
|
||
|
.set push
|
||
|
.set noat
|
||
|
.set noreorder
|
||
|
.set nomacro
|
||
|
#ifdef __mips_hard_float
|
||
|
#if __mips_fpr != 64
|
||
|
ldc1 $f0, (4 * 36 + 8 * 0)($4)
|
||
|
ldc1 $f2, (4 * 36 + 8 * 2)($4)
|
||
|
ldc1 $f4, (4 * 36 + 8 * 4)($4)
|
||
|
ldc1 $f6, (4 * 36 + 8 * 6)($4)
|
||
|
ldc1 $f8, (4 * 36 + 8 * 8)($4)
|
||
|
ldc1 $f10, (4 * 36 + 8 * 10)($4)
|
||
|
ldc1 $f12, (4 * 36 + 8 * 12)($4)
|
||
|
ldc1 $f14, (4 * 36 + 8 * 14)($4)
|
||
|
ldc1 $f16, (4 * 36 + 8 * 16)($4)
|
||
|
ldc1 $f18, (4 * 36 + 8 * 18)($4)
|
||
|
ldc1 $f20, (4 * 36 + 8 * 20)($4)
|
||
|
ldc1 $f22, (4 * 36 + 8 * 22)($4)
|
||
|
ldc1 $f24, (4 * 36 + 8 * 24)($4)
|
||
|
ldc1 $f26, (4 * 36 + 8 * 26)($4)
|
||
|
ldc1 $f28, (4 * 36 + 8 * 28)($4)
|
||
|
ldc1 $f30, (4 * 36 + 8 * 30)($4)
|
||
|
#else
|
||
|
ldc1 $f0, (4 * 36 + 8 * 0)($4)
|
||
|
ldc1 $f1, (4 * 36 + 8 * 1)($4)
|
||
|
ldc1 $f2, (4 * 36 + 8 * 2)($4)
|
||
|
ldc1 $f3, (4 * 36 + 8 * 3)($4)
|
||
|
ldc1 $f4, (4 * 36 + 8 * 4)($4)
|
||
|
ldc1 $f5, (4 * 36 + 8 * 5)($4)
|
||
|
ldc1 $f6, (4 * 36 + 8 * 6)($4)
|
||
|
ldc1 $f7, (4 * 36 + 8 * 7)($4)
|
||
|
ldc1 $f8, (4 * 36 + 8 * 8)($4)
|
||
|
ldc1 $f9, (4 * 36 + 8 * 9)($4)
|
||
|
ldc1 $f10, (4 * 36 + 8 * 10)($4)
|
||
|
ldc1 $f11, (4 * 36 + 8 * 11)($4)
|
||
|
ldc1 $f12, (4 * 36 + 8 * 12)($4)
|
||
|
ldc1 $f13, (4 * 36 + 8 * 13)($4)
|
||
|
ldc1 $f14, (4 * 36 + 8 * 14)($4)
|
||
|
ldc1 $f15, (4 * 36 + 8 * 15)($4)
|
||
|
ldc1 $f16, (4 * 36 + 8 * 16)($4)
|
||
|
ldc1 $f17, (4 * 36 + 8 * 17)($4)
|
||
|
ldc1 $f18, (4 * 36 + 8 * 18)($4)
|
||
|
ldc1 $f19, (4 * 36 + 8 * 19)($4)
|
||
|
ldc1 $f20, (4 * 36 + 8 * 20)($4)
|
||
|
ldc1 $f21, (4 * 36 + 8 * 21)($4)
|
||
|
ldc1 $f22, (4 * 36 + 8 * 22)($4)
|
||
|
ldc1 $f23, (4 * 36 + 8 * 23)($4)
|
||
|
ldc1 $f24, (4 * 36 + 8 * 24)($4)
|
||
|
ldc1 $f25, (4 * 36 + 8 * 25)($4)
|
||
|
ldc1 $f26, (4 * 36 + 8 * 26)($4)
|
||
|
ldc1 $f27, (4 * 36 + 8 * 27)($4)
|
||
|
ldc1 $f28, (4 * 36 + 8 * 28)($4)
|
||
|
ldc1 $f29, (4 * 36 + 8 * 29)($4)
|
||
|
ldc1 $f30, (4 * 36 + 8 * 30)($4)
|
||
|
ldc1 $f31, (4 * 36 + 8 * 31)($4)
|
||
|
#endif
|
||
|
#endif
|
||
|
// restore hi and lo
|
||
|
lw $8, (4 * 33)($4)
|
||
|
mthi $8
|
||
|
lw $8, (4 * 34)($4)
|
||
|
mtlo $8
|
||
|
// r0 is zero
|
||
|
lw $1, (4 * 1)($4)
|
||
|
lw $2, (4 * 2)($4)
|
||
|
lw $3, (4 * 3)($4)
|
||
|
// skip a0 for now
|
||
|
lw $5, (4 * 5)($4)
|
||
|
lw $6, (4 * 6)($4)
|
||
|
lw $7, (4 * 7)($4)
|
||
|
lw $8, (4 * 8)($4)
|
||
|
lw $9, (4 * 9)($4)
|
||
|
lw $10, (4 * 10)($4)
|
||
|
lw $11, (4 * 11)($4)
|
||
|
lw $12, (4 * 12)($4)
|
||
|
lw $13, (4 * 13)($4)
|
||
|
lw $14, (4 * 14)($4)
|
||
|
lw $15, (4 * 15)($4)
|
||
|
lw $16, (4 * 16)($4)
|
||
|
lw $17, (4 * 17)($4)
|
||
|
lw $18, (4 * 18)($4)
|
||
|
lw $19, (4 * 19)($4)
|
||
|
lw $20, (4 * 20)($4)
|
||
|
lw $21, (4 * 21)($4)
|
||
|
lw $22, (4 * 22)($4)
|
||
|
lw $23, (4 * 23)($4)
|
||
|
lw $24, (4 * 24)($4)
|
||
|
lw $25, (4 * 25)($4)
|
||
|
lw $26, (4 * 26)($4)
|
||
|
lw $27, (4 * 27)($4)
|
||
|
lw $28, (4 * 28)($4)
|
||
|
lw $29, (4 * 29)($4)
|
||
|
lw $30, (4 * 30)($4)
|
||
|
// load new pc into ra
|
||
|
lw $31, (4 * 32)($4)
|
||
|
// jump to ra, load a0 in the delay slot
|
||
|
jr $31
|
||
|
lw $4, (4 * 4)($4)
|
||
|
.set pop
|
||
|
|
||
|
#elif defined(__mips64)
|
||
|
|
||
|
//
|
||
|
// void libunwind::Registers_mips_newabi::jumpto()
|
||
|
//
|
||
|
// On entry:
|
||
|
// thread state pointer is in a0 ($4)
|
||
|
//
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind21Registers_mips_newabi6jumptoEv)
|
||
|
.set push
|
||
|
.set noat
|
||
|
.set noreorder
|
||
|
.set nomacro
|
||
|
#ifdef __mips_hard_float
|
||
|
ldc1 $f0, (8 * 35)($4)
|
||
|
ldc1 $f1, (8 * 36)($4)
|
||
|
ldc1 $f2, (8 * 37)($4)
|
||
|
ldc1 $f3, (8 * 38)($4)
|
||
|
ldc1 $f4, (8 * 39)($4)
|
||
|
ldc1 $f5, (8 * 40)($4)
|
||
|
ldc1 $f6, (8 * 41)($4)
|
||
|
ldc1 $f7, (8 * 42)($4)
|
||
|
ldc1 $f8, (8 * 43)($4)
|
||
|
ldc1 $f9, (8 * 44)($4)
|
||
|
ldc1 $f10, (8 * 45)($4)
|
||
|
ldc1 $f11, (8 * 46)($4)
|
||
|
ldc1 $f12, (8 * 47)($4)
|
||
|
ldc1 $f13, (8 * 48)($4)
|
||
|
ldc1 $f14, (8 * 49)($4)
|
||
|
ldc1 $f15, (8 * 50)($4)
|
||
|
ldc1 $f16, (8 * 51)($4)
|
||
|
ldc1 $f17, (8 * 52)($4)
|
||
|
ldc1 $f18, (8 * 53)($4)
|
||
|
ldc1 $f19, (8 * 54)($4)
|
||
|
ldc1 $f20, (8 * 55)($4)
|
||
|
ldc1 $f21, (8 * 56)($4)
|
||
|
ldc1 $f22, (8 * 57)($4)
|
||
|
ldc1 $f23, (8 * 58)($4)
|
||
|
ldc1 $f24, (8 * 59)($4)
|
||
|
ldc1 $f25, (8 * 60)($4)
|
||
|
ldc1 $f26, (8 * 61)($4)
|
||
|
ldc1 $f27, (8 * 62)($4)
|
||
|
ldc1 $f28, (8 * 63)($4)
|
||
|
ldc1 $f29, (8 * 64)($4)
|
||
|
ldc1 $f30, (8 * 65)($4)
|
||
|
ldc1 $f31, (8 * 66)($4)
|
||
|
#endif
|
||
|
// restore hi and lo
|
||
|
ld $8, (8 * 33)($4)
|
||
|
mthi $8
|
||
|
ld $8, (8 * 34)($4)
|
||
|
mtlo $8
|
||
|
// r0 is zero
|
||
|
ld $1, (8 * 1)($4)
|
||
|
ld $2, (8 * 2)($4)
|
||
|
ld $3, (8 * 3)($4)
|
||
|
// skip a0 for now
|
||
|
ld $5, (8 * 5)($4)
|
||
|
ld $6, (8 * 6)($4)
|
||
|
ld $7, (8 * 7)($4)
|
||
|
ld $8, (8 * 8)($4)
|
||
|
ld $9, (8 * 9)($4)
|
||
|
ld $10, (8 * 10)($4)
|
||
|
ld $11, (8 * 11)($4)
|
||
|
ld $12, (8 * 12)($4)
|
||
|
ld $13, (8 * 13)($4)
|
||
|
ld $14, (8 * 14)($4)
|
||
|
ld $15, (8 * 15)($4)
|
||
|
ld $16, (8 * 16)($4)
|
||
|
ld $17, (8 * 17)($4)
|
||
|
ld $18, (8 * 18)($4)
|
||
|
ld $19, (8 * 19)($4)
|
||
|
ld $20, (8 * 20)($4)
|
||
|
ld $21, (8 * 21)($4)
|
||
|
ld $22, (8 * 22)($4)
|
||
|
ld $23, (8 * 23)($4)
|
||
|
ld $24, (8 * 24)($4)
|
||
|
ld $25, (8 * 25)($4)
|
||
|
ld $26, (8 * 26)($4)
|
||
|
ld $27, (8 * 27)($4)
|
||
|
ld $28, (8 * 28)($4)
|
||
|
ld $29, (8 * 29)($4)
|
||
|
ld $30, (8 * 30)($4)
|
||
|
// load new pc into ra
|
||
|
ld $31, (8 * 32)($4)
|
||
|
// jump to ra, load a0 in the delay slot
|
||
|
jr $31
|
||
|
ld $4, (8 * 4)($4)
|
||
|
.set pop
|
||
|
|
||
|
#elif defined(__sparc__)
|
||
|
|
||
|
//
|
||
|
// void libunwind::Registers_sparc_o32::jumpto()
|
||
|
//
|
||
|
// On entry:
|
||
|
// thread_state pointer is in o0
|
||
|
//
|
||
|
DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind15Registers_sparc6jumptoEv)
|
||
|
ta 3
|
||
|
ldd [%o0 + 64], %l0
|
||
|
ldd [%o0 + 72], %l2
|
||
|
ldd [%o0 + 80], %l4
|
||
|
ldd [%o0 + 88], %l6
|
||
|
ldd [%o0 + 96], %i0
|
||
|
ldd [%o0 + 104], %i2
|
||
|
ldd [%o0 + 112], %i4
|
||
|
ldd [%o0 + 120], %i6
|
||
|
ld [%o0 + 60], %o7
|
||
|
jmp %o7
|
||
|
nop
|
||
|
|
||
|
#endif
|
||
|
|
||
|
#endif /* !defined(__USING_SJLJ_EXCEPTIONS__) */
|
||
|
|
||
|
NO_EXEC_STACK_DIRECTIVE
|
||
|
|