1267 lines
34 KiB
C++
1267 lines
34 KiB
C++
/*
|
|
|
|
auto-generated file, do not modify!
|
|
libcontext - a slightly more portable version of boost::context
|
|
Copyright Martin Husemann 2013.
|
|
Copyright Oliver Kowalke 2009.
|
|
Copyright Sergue E. Leontiev 2013
|
|
Copyright Thomas Sailer 2013.
|
|
Minor modifications by Tomasz Wlostowski 2016.
|
|
|
|
Distributed under the Boost Software License, Version 1.0.
|
|
(See accompanying file LICENSE.BOOSTv1_0.txt or copy at
|
|
http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
*/
|
|
#include <system/libcontext.h>
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_windows_i386) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".p2align 4,,15\n"
|
|
".globl _jump_fcontext\n"
|
|
".def _jump_fcontext; .scl 2; .type 32; .endef\n"
|
|
"_jump_fcontext:\n"
|
|
" mov 0x10(%esp),%ecx\n"
|
|
" push %ebp\n"
|
|
" push %ebx\n"
|
|
" push %esi\n"
|
|
" push %edi\n"
|
|
" mov %fs:0x18,%edx\n"
|
|
" mov (%edx),%eax\n"
|
|
" push %eax\n"
|
|
" mov 0x4(%edx),%eax\n"
|
|
" push %eax\n"
|
|
" mov 0x8(%edx),%eax\n"
|
|
" push %eax\n"
|
|
" mov 0xe0c(%edx),%eax\n"
|
|
" push %eax\n"
|
|
" mov 0x10(%edx),%eax\n"
|
|
" push %eax\n"
|
|
" lea -0x8(%esp),%esp\n"
|
|
" test %ecx,%ecx\n"
|
|
" je nxt1\n"
|
|
" stmxcsr (%esp)\n"
|
|
" fnstcw 0x4(%esp)\n"
|
|
"nxt1:\n"
|
|
" mov 0x30(%esp),%eax\n"
|
|
" mov %esp,(%eax)\n"
|
|
" mov 0x34(%esp),%edx\n"
|
|
" mov 0x38(%esp),%eax\n"
|
|
" mov %edx,%esp\n"
|
|
" test %ecx,%ecx\n"
|
|
" je nxt2\n"
|
|
" ldmxcsr (%esp)\n"
|
|
" fldcw 0x4(%esp)\n"
|
|
"nxt2:\n"
|
|
" lea 0x8(%esp),%esp\n"
|
|
" mov %fs:0x18,%edx\n"
|
|
" pop %ecx\n"
|
|
" mov %ecx,0x10(%edx)\n"
|
|
" pop %ecx\n"
|
|
" mov %ecx,0xe0c(%edx)\n"
|
|
" pop %ecx\n"
|
|
" mov %ecx,0x8(%edx)\n"
|
|
" pop %ecx\n"
|
|
" mov %ecx,0x4(%edx)\n"
|
|
" pop %ecx\n"
|
|
" mov %ecx,(%edx)\n"
|
|
" pop %edi\n"
|
|
" pop %esi\n"
|
|
" pop %ebx\n"
|
|
" pop %ebp\n"
|
|
" pop %edx\n"
|
|
" mov %eax,0x4(%esp)\n"
|
|
" jmp *%edx\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_windows_i386) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".p2align 4,,15\n"
|
|
".globl _make_fcontext\n"
|
|
".def _make_fcontext; .scl 2; .type 32; .endef\n"
|
|
"_make_fcontext:\n"
|
|
"mov 0x4(%esp),%eax\n"
|
|
"lea -0x8(%eax),%eax\n"
|
|
"and $0xfffffff0,%eax\n"
|
|
"lea -0x3c(%eax),%eax\n"
|
|
"mov 0x4(%esp),%ecx\n"
|
|
"mov %ecx,0x14(%eax)\n"
|
|
"mov 0x8(%esp),%edx\n"
|
|
"neg %edx\n"
|
|
"lea (%ecx,%edx,1),%ecx\n"
|
|
"mov %ecx,0x10(%eax)\n"
|
|
"mov %ecx,0xc(%eax)\n"
|
|
"mov 0xc(%esp),%ecx\n"
|
|
"mov %ecx,0x2c(%eax)\n"
|
|
"stmxcsr (%eax)\n"
|
|
"fnstcw 0x4(%eax)\n"
|
|
"mov $finish,%ecx\n"
|
|
"mov %ecx,0x30(%eax)\n"
|
|
"mov %fs:0x0,%ecx\n"
|
|
"walk:\n"
|
|
"mov (%ecx),%edx\n"
|
|
"inc %edx\n"
|
|
"je found\n"
|
|
"dec %edx\n"
|
|
"xchg %edx,%ecx\n"
|
|
"jmp walk\n"
|
|
"found:\n"
|
|
"mov 0x4(%ecx),%ecx\n"
|
|
"mov %ecx,0x3c(%eax)\n"
|
|
"mov $0xffffffff,%ecx\n"
|
|
"mov %ecx,0x38(%eax)\n"
|
|
"lea 0x38(%eax),%ecx\n"
|
|
"mov %ecx,0x18(%eax)\n"
|
|
"ret\n"
|
|
"finish:\n"
|
|
"xor %eax,%eax\n"
|
|
"mov %eax,(%esp)\n"
|
|
"call _exit\n"
|
|
"hlt\n"
|
|
".def __exit; .scl 2; .type 32; .endef \n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_windows_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".p2align 4,,15\n"
|
|
".globl jump_fcontext\n"
|
|
".def jump_fcontext; .scl 2; .type 32; .endef\n"
|
|
".seh_proc jump_fcontext\n"
|
|
"jump_fcontext:\n"
|
|
".seh_endprologue\n"
|
|
" push %rbp\n"
|
|
" push %rbx\n"
|
|
" push %rsi\n"
|
|
" push %rdi\n"
|
|
" push %r15\n"
|
|
" push %r14\n"
|
|
" push %r13\n"
|
|
" push %r12\n"
|
|
" mov %gs:0x30,%r10\n"
|
|
" mov 0x8(%r10),%rax\n"
|
|
" push %rax\n"
|
|
" mov 0x10(%r10),%rax\n"
|
|
" push %rax\n"
|
|
" mov 0x1478(%r10),%rax\n"
|
|
" push %rax\n"
|
|
" mov 0x20(%r10),%rax\n"
|
|
" push %rax\n"
|
|
" lea -0xa8(%rsp),%rsp\n"
|
|
" test %r9,%r9\n"
|
|
" je nxt1\n"
|
|
" stmxcsr 0xa0(%rsp)\n"
|
|
" fnstcw 0xa4(%rsp)\n"
|
|
" movaps %xmm6,(%rsp)\n"
|
|
" movaps %xmm7,0x10(%rsp)\n"
|
|
" movaps %xmm8,0x20(%rsp)\n"
|
|
" movaps %xmm9,0x30(%rsp)\n"
|
|
" movaps %xmm10,0x40(%rsp)\n"
|
|
" movaps %xmm11,0x50(%rsp)\n"
|
|
" movaps %xmm12,0x60(%rsp)\n"
|
|
" movaps %xmm13,0x70(%rsp)\n"
|
|
" movaps %xmm14,0x80(%rsp)\n"
|
|
" movaps %xmm15,0x90(%rsp)\n"
|
|
"nxt1:\n"
|
|
" xor %r10,%r10\n"
|
|
" push %r10\n"
|
|
" mov %rsp,(%rcx)\n"
|
|
" mov %rdx,%rsp\n"
|
|
" pop %r10\n"
|
|
" test %r9,%r9\n"
|
|
" je nxt2\n"
|
|
" ldmxcsr 0xa0(%rsp)\n"
|
|
" fldcw 0xa4(%rsp)\n"
|
|
" movaps (%rsp),%xmm6\n"
|
|
" movaps 0x10(%rsp),%xmm7\n"
|
|
" movaps 0x20(%rsp),%xmm8\n"
|
|
" movaps 0x30(%rsp),%xmm9\n"
|
|
" movaps 0x40(%rsp),%xmm10\n"
|
|
" movaps 0x50(%rsp),%xmm11\n"
|
|
" movaps 0x60(%rsp),%xmm12\n"
|
|
" movaps 0x70(%rsp),%xmm13\n"
|
|
" movaps 0x80(%rsp),%xmm14\n"
|
|
" movaps 0x90(%rsp),%xmm15\n"
|
|
"nxt2:\n"
|
|
" mov $0xa8,%rcx\n"
|
|
" test %r10,%r10\n"
|
|
" je nxt3\n"
|
|
" add $0x8,%rcx\n"
|
|
"nxt3:\n"
|
|
" lea (%rsp,%rcx,1),%rsp\n"
|
|
" mov %gs:0x30,%r10\n"
|
|
" pop %rax\n"
|
|
" mov %rax,0x20(%r10)\n"
|
|
" pop %rax\n"
|
|
" mov %rax,0x1478(%r10)\n"
|
|
" pop %rax\n"
|
|
" mov %rax,0x10(%r10)\n"
|
|
" pop %rax\n"
|
|
" mov %rax,0x8(%r10)\n"
|
|
" pop %r12\n"
|
|
" pop %r13\n"
|
|
" pop %r14\n"
|
|
" pop %r15\n"
|
|
" pop %rdi\n"
|
|
" pop %rsi\n"
|
|
" pop %rbx\n"
|
|
" pop %rbp\n"
|
|
" pop %r10\n"
|
|
" mov %r8,%rax\n"
|
|
" mov %r8,%rcx\n"
|
|
" jmpq *%r10\n"
|
|
".seh_endproc\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_windows_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".p2align 4,,15\n"
|
|
".globl make_fcontext\n"
|
|
".def make_fcontext; .scl 2; .type 32; .endef\n"
|
|
".seh_proc make_fcontext\n"
|
|
"make_fcontext:\n"
|
|
".seh_endprologue\n"
|
|
"mov %rcx,%rax\n"
|
|
"sub $0x28,%rax\n"
|
|
"and $0xfffffffffffffff0,%rax\n"
|
|
"sub $0x128,%rax\n"
|
|
"mov %r8,0x118(%rax)\n"
|
|
"mov %rcx,0xd0(%rax)\n"
|
|
"neg %rdx\n"
|
|
"lea (%rcx,%rdx,1),%rcx\n"
|
|
"mov %rcx,0xc8(%rax)\n"
|
|
"mov %rcx,0xc0(%rax)\n"
|
|
"stmxcsr 0xa8(%rax)\n"
|
|
"fnstcw 0xac(%rax)\n"
|
|
"leaq finish(%rip), %rcx\n"
|
|
"mov %rcx,0x120(%rax)\n"
|
|
"mov $0x1,%rcx\n"
|
|
"mov %rcx,(%rax)\n"
|
|
"retq\n"
|
|
"finish:\n"
|
|
"xor %rcx,%rcx\n"
|
|
"call _exit\n"
|
|
"hlt\n"
|
|
" .seh_endproc\n"
|
|
".def _exit; .scl 2; .type 32; .endef \n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_i386) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl jump_fcontext\n"
|
|
".align 2\n"
|
|
".type jump_fcontext,@function\n"
|
|
"jump_fcontext:\n"
|
|
" movl 0x10(%esp), %ecx\n"
|
|
" pushl %ebp \n"
|
|
" pushl %ebx \n"
|
|
" pushl %esi \n"
|
|
" pushl %edi \n"
|
|
" leal -0x8(%esp), %esp\n"
|
|
" test %ecx, %ecx\n"
|
|
" je 1f\n"
|
|
" stmxcsr (%esp)\n"
|
|
" fnstcw 0x4(%esp)\n"
|
|
"1:\n"
|
|
" movl 0x1c(%esp), %eax\n"
|
|
" movl %esp, (%eax)\n"
|
|
" movl 0x20(%esp), %edx\n"
|
|
" movl 0x24(%esp), %eax\n"
|
|
" movl %edx, %esp\n"
|
|
" test %ecx, %ecx\n"
|
|
" je 2f\n"
|
|
" ldmxcsr (%esp)\n"
|
|
" fldcw 0x4(%esp)\n"
|
|
"2:\n"
|
|
" leal 0x8(%esp), %esp\n"
|
|
" popl %edi \n"
|
|
" popl %esi \n"
|
|
" popl %ebx \n"
|
|
" popl %ebp \n"
|
|
" popl %edx\n"
|
|
" movl %eax, 0x4(%esp)\n"
|
|
" jmp *%edx\n"
|
|
".size jump_fcontext,.-jump_fcontext\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_i386) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl make_fcontext\n"
|
|
".align 2\n"
|
|
".type make_fcontext,@function\n"
|
|
"make_fcontext:\n"
|
|
" movl 0x4(%esp), %eax\n"
|
|
" leal -0x8(%eax), %eax\n"
|
|
" andl $-16, %eax\n"
|
|
" leal -0x20(%eax), %eax\n"
|
|
" movl 0xc(%esp), %edx\n"
|
|
" movl %edx, 0x18(%eax)\n"
|
|
" stmxcsr (%eax)\n"
|
|
" fnstcw 0x4(%eax)\n"
|
|
" call 1f\n"
|
|
"1: popl %ecx\n"
|
|
" addl $finish-1b, %ecx\n"
|
|
" movl %ecx, 0x1c(%eax)\n"
|
|
" ret \n"
|
|
"finish:\n"
|
|
" call 2f\n"
|
|
"2: popl %ebx\n"
|
|
" addl $_GLOBAL_OFFSET_TABLE_+[.-2b], %ebx\n"
|
|
" xorl %eax, %eax\n"
|
|
" movl %eax, (%esp)\n"
|
|
" call _exit@PLT\n"
|
|
" hlt\n"
|
|
".size make_fcontext,.-make_fcontext\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl jump_fcontext\n"
|
|
".type jump_fcontext,@function\n"
|
|
".align 16\n"
|
|
"jump_fcontext:\n"
|
|
" pushq %rbp \n"
|
|
" pushq %rbx \n"
|
|
" pushq %r15 \n"
|
|
" pushq %r14 \n"
|
|
" pushq %r13 \n"
|
|
" pushq %r12 \n"
|
|
" leaq -0x8(%rsp), %rsp\n"
|
|
" cmp $0, %rcx\n"
|
|
" je 1f\n"
|
|
" stmxcsr (%rsp)\n"
|
|
" fnstcw 0x4(%rsp)\n"
|
|
"1:\n"
|
|
" movq %rsp, (%rdi)\n"
|
|
" movq %rsi, %rsp\n"
|
|
" cmp $0, %rcx\n"
|
|
" je 2f\n"
|
|
" ldmxcsr (%rsp)\n"
|
|
" fldcw 0x4(%rsp)\n"
|
|
"2:\n"
|
|
" leaq 0x8(%rsp), %rsp\n"
|
|
" popq %r12 \n"
|
|
" popq %r13 \n"
|
|
" popq %r14 \n"
|
|
" popq %r15 \n"
|
|
" popq %rbx \n"
|
|
" popq %rbp \n"
|
|
" popq %r8\n"
|
|
" movq %rdx, %rax\n"
|
|
" movq %rdx, %rdi\n"
|
|
" jmp *%r8\n"
|
|
".size jump_fcontext,.-jump_fcontext\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl make_fcontext\n"
|
|
".type make_fcontext,@function\n"
|
|
".align 16\n"
|
|
"make_fcontext:\n"
|
|
" movq %rdi, %rax\n"
|
|
" andq $-16, %rax\n"
|
|
" leaq -0x48(%rax), %rax\n"
|
|
" movq %rdx, 0x38(%rax)\n"
|
|
" stmxcsr (%rax)\n"
|
|
" fnstcw 0x4(%rax)\n"
|
|
" leaq finish(%rip), %rcx\n"
|
|
" movq %rcx, 0x40(%rax)\n"
|
|
" ret \n"
|
|
"finish:\n"
|
|
" xorq %rdi, %rdi\n"
|
|
" call _exit@PLT\n"
|
|
" hlt\n"
|
|
".size make_fcontext,.-make_fcontext\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_apple_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl _jump_fcontext\n"
|
|
".align 8\n"
|
|
"_jump_fcontext:\n"
|
|
" pushq %rbp \n"
|
|
" pushq %rbx \n"
|
|
" pushq %r15 \n"
|
|
" pushq %r14 \n"
|
|
" pushq %r13 \n"
|
|
" pushq %r12 \n"
|
|
" leaq -0x8(%rsp), %rsp\n"
|
|
" cmp $0, %rcx\n"
|
|
" je 1f\n"
|
|
" stmxcsr (%rsp)\n"
|
|
" fnstcw 0x4(%rsp)\n"
|
|
"1:\n"
|
|
" movq %rsp, (%rdi)\n"
|
|
" movq %rsi, %rsp\n"
|
|
" cmp $0, %rcx\n"
|
|
" je 2f\n"
|
|
" ldmxcsr (%rsp)\n"
|
|
" fldcw 0x4(%rsp)\n"
|
|
"2:\n"
|
|
" leaq 0x8(%rsp), %rsp\n"
|
|
" popq %r12 \n"
|
|
" popq %r13 \n"
|
|
" popq %r14 \n"
|
|
" popq %r15 \n"
|
|
" popq %rbx \n"
|
|
" popq %rbp \n"
|
|
" popq %r8\n"
|
|
" movq %rdx, %rax\n"
|
|
" movq %rdx, %rdi\n"
|
|
" jmp *%r8\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_apple_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl _make_fcontext\n"
|
|
".align 8\n"
|
|
"_make_fcontext:\n"
|
|
" movq %rdi, %rax\n"
|
|
" movabs $-16, %r8\n"
|
|
" andq %r8, %rax\n"
|
|
" leaq -0x48(%rax), %rax\n"
|
|
" movq %rdx, 0x38(%rax)\n"
|
|
" stmxcsr (%rax)\n"
|
|
" fnstcw 0x4(%rax)\n"
|
|
" leaq finish(%rip), %rcx\n"
|
|
" movq %rcx, 0x40(%rax)\n"
|
|
" ret \n"
|
|
"finish:\n"
|
|
" xorq %rdi, %rdi\n"
|
|
" call __exit\n"
|
|
" hlt\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_apple_i386) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl _jump_fcontext\n"
|
|
".align 2\n"
|
|
"_jump_fcontext:\n"
|
|
" movl 0x10(%esp), %ecx\n"
|
|
" pushl %ebp \n"
|
|
" pushl %ebx \n"
|
|
" pushl %esi \n"
|
|
" pushl %edi \n"
|
|
" leal -0x8(%esp), %esp\n"
|
|
" test %ecx, %ecx\n"
|
|
" je 1f\n"
|
|
" stmxcsr (%esp)\n"
|
|
" fnstcw 0x4(%esp)\n"
|
|
"1:\n"
|
|
" movl 0x1c(%esp), %eax\n"
|
|
" movl %esp, (%eax)\n"
|
|
" movl 0x20(%esp), %edx\n"
|
|
" movl 0x24(%esp), %eax\n"
|
|
" movl %edx, %esp\n"
|
|
" test %ecx, %ecx\n"
|
|
" je 2f\n"
|
|
" ldmxcsr (%esp)\n"
|
|
" fldcw 0x4(%esp)\n"
|
|
"2:\n"
|
|
" leal 0x8(%esp), %esp\n"
|
|
" popl %edi \n"
|
|
" popl %esi \n"
|
|
" popl %ebx \n"
|
|
" popl %ebp \n"
|
|
" popl %edx\n"
|
|
" movl %eax, 0x4(%esp)\n"
|
|
" jmp *%edx\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_apple_i386) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl _make_fcontext\n"
|
|
".align 2\n"
|
|
"_make_fcontext:\n"
|
|
" movl 0x4(%esp), %eax\n"
|
|
" leal -0x8(%eax), %eax\n"
|
|
" andl $-16, %eax\n"
|
|
" leal -0x20(%eax), %eax\n"
|
|
" movl 0xc(%esp), %edx\n"
|
|
" movl %edx, 0x18(%eax)\n"
|
|
" stmxcsr (%eax)\n"
|
|
" fnstcw 0x4(%eax)\n"
|
|
" call 1f\n"
|
|
"1: popl %ecx\n"
|
|
" addl $finish-1b, %ecx\n"
|
|
" movl %ecx, 0x1c(%eax)\n"
|
|
" ret \n"
|
|
"finish:\n"
|
|
" xorl %eax, %eax\n"
|
|
" movl %eax, (%esp)\n"
|
|
" call __exit\n"
|
|
" hlt\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_arm32) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl jump_fcontext\n"
|
|
".align 2\n"
|
|
".type jump_fcontext,%function\n"
|
|
"jump_fcontext:\n"
|
|
" @ save LR as PC\n"
|
|
" push {lr}\n"
|
|
" @ save V1-V8,LR\n"
|
|
" push {v1-v8,lr}\n"
|
|
" @ prepare stack for FPU\n"
|
|
" sub sp, sp, #64\n"
|
|
" @ test if fpu env should be preserved\n"
|
|
" cmp a4, #0\n"
|
|
" beq 1f\n"
|
|
" @ save S16-S31\n"
|
|
" vstmia sp, {d8-d15}\n"
|
|
"1:\n"
|
|
" @ store RSP (pointing to context-data) in A1\n"
|
|
" str sp, [a1]\n"
|
|
" @ restore RSP (pointing to context-data) from A2\n"
|
|
" mov sp, a2\n"
|
|
" @ test if fpu env should be preserved\n"
|
|
" cmp a4, #0\n"
|
|
" beq 2f\n"
|
|
" @ restore S16-S31\n"
|
|
" vldmia sp, {d8-d15}\n"
|
|
"2:\n"
|
|
" @ prepare stack for FPU\n"
|
|
" add sp, sp, #64\n"
|
|
" @ use third arg as return value after jump\n"
|
|
" @ and as first arg in context function\n"
|
|
" mov a1, a3\n"
|
|
" @ restore v1-V8,LR,PC\n"
|
|
" pop {v1-v8,lr}\n"
|
|
" pop {pc}\n"
|
|
".size jump_fcontext,.-jump_fcontext\n"
|
|
"@ Mark that we don't need executable stack.\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_arm32) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl make_fcontext\n"
|
|
".align 2\n"
|
|
".type make_fcontext,%function\n"
|
|
"make_fcontext:\n"
|
|
" @ shift address in A1 to lower 16 byte boundary\n"
|
|
" bic a1, a1, #15\n"
|
|
" @ reserve space for context-data on context-stack\n"
|
|
" sub a1, a1, #104\n"
|
|
" @ third arg of make_fcontext() == address of context-function\n"
|
|
" str a3, [a1,#100]\n"
|
|
" @ compute abs address of label finish\n"
|
|
" adr a2, finish\n"
|
|
" @ save address of finish as return-address for context-function\n"
|
|
" @ will be entered after context-function returns\n"
|
|
" str a2, [a1,#96]\n"
|
|
" bx lr @ return pointer to context-data\n"
|
|
"finish:\n"
|
|
" @ exit code is zero\n"
|
|
" mov a1, #0\n"
|
|
" @ exit application\n"
|
|
" bl _exit@PLT\n"
|
|
".size make_fcontext,.-make_fcontext\n"
|
|
"@ Mark that we don't need executable stack.\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_arm64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".cpu generic+fp+simd\n"
|
|
".text\n"
|
|
".align 2\n"
|
|
".global jump_fcontext\n"
|
|
".type jump_fcontext, %function\n"
|
|
"jump_fcontext:\n"
|
|
" # prepare stack for GP + FPU\n"
|
|
" sub sp, sp, #0xb0\n"
|
|
"# Because gcc may save integer registers in fp registers across a\n"
|
|
"# function call we cannot skip saving the fp registers.\n"
|
|
"#\n"
|
|
"# Do not reinstate this test unless you fully understand what you\n"
|
|
"# are doing.\n"
|
|
"#\n"
|
|
"# # test if fpu env should be preserved\n"
|
|
"# cmp w3, #0\n"
|
|
"# b.eq 1f\n"
|
|
" # save d8 - d15\n"
|
|
" stp d8, d9, [sp, #0x00]\n"
|
|
" stp d10, d11, [sp, #0x10]\n"
|
|
" stp d12, d13, [sp, #0x20]\n"
|
|
" stp d14, d15, [sp, #0x30]\n"
|
|
"1:\n"
|
|
" # save x19-x30\n"
|
|
" stp x19, x20, [sp, #0x40]\n"
|
|
" stp x21, x22, [sp, #0x50]\n"
|
|
" stp x23, x24, [sp, #0x60]\n"
|
|
" stp x25, x26, [sp, #0x70]\n"
|
|
" stp x27, x28, [sp, #0x80]\n"
|
|
" stp x29, x30, [sp, #0x90]\n"
|
|
" # save LR as PC\n"
|
|
" str x30, [sp, #0xa0]\n"
|
|
" # store RSP (pointing to context-data) in first argument (x0).\n"
|
|
" # STR cannot have sp as a target register\n"
|
|
" mov x4, sp\n"
|
|
" str x4, [x0]\n"
|
|
" # restore RSP (pointing to context-data) from A2 (x1)\n"
|
|
" mov sp, x1\n"
|
|
"# # test if fpu env should be preserved\n"
|
|
"# cmp w3, #0\n"
|
|
"# b.eq 2f\n"
|
|
" # load d8 - d15\n"
|
|
" ldp d8, d9, [sp, #0x00]\n"
|
|
" ldp d10, d11, [sp, #0x10]\n"
|
|
" ldp d12, d13, [sp, #0x20]\n"
|
|
" ldp d14, d15, [sp, #0x30]\n"
|
|
"2:\n"
|
|
" # load x19-x30\n"
|
|
" ldp x19, x20, [sp, #0x40]\n"
|
|
" ldp x21, x22, [sp, #0x50]\n"
|
|
" ldp x23, x24, [sp, #0x60]\n"
|
|
" ldp x25, x26, [sp, #0x70]\n"
|
|
" ldp x27, x28, [sp, #0x80]\n"
|
|
" ldp x29, x30, [sp, #0x90]\n"
|
|
" # use third arg as return value after jump\n"
|
|
" # and as first arg in context function\n"
|
|
" mov x0, x2\n"
|
|
" # load pc\n"
|
|
" ldr x4, [sp, #0xa0]\n"
|
|
" # restore stack from GP + FPU\n"
|
|
" add sp, sp, #0xb0\n"
|
|
" ret x4\n"
|
|
".size jump_fcontext,.-jump_fcontext\n"
|
|
"# Mark that we don't need executable stack.\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_arm64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".cpu generic+fp+simd\n"
|
|
".text\n"
|
|
".align 2\n"
|
|
".global make_fcontext\n"
|
|
".type make_fcontext, %function\n"
|
|
"make_fcontext:\n"
|
|
" # shift address in x0 (allocated stack) to lower 16 byte boundary\n"
|
|
" and x0, x0, ~0xF\n"
|
|
" # reserve space for context-data on context-stack\n"
|
|
" sub x0, x0, #0xb0\n"
|
|
" # third arg of make_fcontext() == address of context-function\n"
|
|
" # store address as a PC to jump in\n"
|
|
" str x2, [x0, #0xa0]\n"
|
|
" # save address of finish as return-address for context-function\n"
|
|
" # will be entered after context-function returns (LR register)\n"
|
|
" adr x1, finish\n"
|
|
" str x1, [x0, #0x98]\n"
|
|
" ret x30 \n"
|
|
"finish:\n"
|
|
" # exit code is zero\n"
|
|
" mov x0, #0\n"
|
|
" # exit application\n"
|
|
" bl _exit\n"
|
|
".size make_fcontext,.-make_fcontext\n"
|
|
"# Mark that we don't need executable stack.\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_mips_n64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl jump_fcontext\n"
|
|
".align 2\n"
|
|
".set noreorder\n"
|
|
".type jump_fcontext,@function\n"
|
|
".ent jump_fcontext\n"
|
|
"jump_fcontext:\n"
|
|
" # reserve space on stack\n"
|
|
" daddiu $sp, $sp, -176\n"
|
|
" sd $s0, 64($sp) # save S0\n"
|
|
" sd $s1, 72($sp) # save S1\n"
|
|
" sd $s2, 80($sp) # save S2\n"
|
|
" sd $s3, 88($sp) # save S3\n"
|
|
" sd $s4, 96($sp) # save S4\n"
|
|
" sd $s5, 104($sp) # save S5\n"
|
|
" sd $s6, 112($sp) # save S6\n"
|
|
" sd $s7, 120($sp) # save S7\n"
|
|
" sd $fp, 128($sp) # save FP\n"
|
|
" sd $ra, 144($sp) # save RA\n"
|
|
" sd $ra, 152($sp) # save RA as PC\n"
|
|
" s.d $f24, 0($sp) # save F24\n"
|
|
" s.d $f25, 8($sp) # save F25\n"
|
|
" s.d $f26, 16($sp) # save F26\n"
|
|
" s.d $f27, 24($sp) # save F27\n"
|
|
" s.d $f28, 32($sp) # save F28\n"
|
|
" s.d $f29, 40($sp) # save F29\n"
|
|
" s.d $f30, 48($sp) # save F30\n"
|
|
" s.d $f31, 56($sp) # save F31\n"
|
|
" # store SP (pointing to old context-data) in pointer a0(first arg)\n"
|
|
" sd $sp, 0($a0)\n"
|
|
" # get SP (pointing to new context-data) from a1 param\n"
|
|
" move $sp, $a1\n"
|
|
" l.d $f24, 0($sp) # restore F24\n"
|
|
" l.d $f25, 8($sp) # restore F25\n"
|
|
" l.d $f26, 16($sp) # restore F26\n"
|
|
" l.d $f27, 24($sp) # restore F27\n"
|
|
" l.d $f28, 32($sp) # restore F28\n"
|
|
" l.d $f29, 40($sp) # restore F29\n"
|
|
" l.d $f30, 48($sp) # restore F30\n"
|
|
" l.d $f31, 56($sp) # restore F31\n"
|
|
" ld $s0, 64($sp) # restore S0\n"
|
|
" ld $s1, 72($sp) # restore S1\n"
|
|
" ld $s2, 80($sp) # restore S2\n"
|
|
" ld $s3, 88($sp) # restore S3\n"
|
|
" ld $s4, 96($sp) # restore S4\n"
|
|
" ld $s5, 104($sp) # restore S5\n"
|
|
" ld $s6, 112($sp) # restore S6\n"
|
|
" ld $s7, 120($sp) # restore S7\n"
|
|
" ld $fp, 128($sp) # restore FP\n"
|
|
" ld $ra, 144($sp) # restore RA\n"
|
|
" # load PC\n"
|
|
" ld $t9, 152($sp)\n"
|
|
" sd $a2, 160($sp)\n"
|
|
" # adjust stack\n"
|
|
" daddiu $sp, $sp, 176\n"
|
|
" move $a0, $a2 # move *data from a2 to a0 as param\n"
|
|
" move $v0, $a2 # move *data from a2 to v0 as return\n"
|
|
" # jump to context\n"
|
|
" jr $t9\n"
|
|
" nop\n"
|
|
".end jump_fcontext\n"
|
|
".size jump_fcontext, .-jump_fcontext\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_mips_n64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl make_fcontext\n"
|
|
".align 2\n"
|
|
".set noreorder\n"
|
|
".type make_fcontext,@function\n"
|
|
".ent make_fcontext\n"
|
|
"make_fcontext:\n"
|
|
"#ifdef __PIC__\n"
|
|
".set noreorder\n"
|
|
".cpload $t9\n"
|
|
".set reorder\n"
|
|
"#endif\n"
|
|
" # shift address in A0 to lower 16 byte boundary\n"
|
|
" li $v1, 0xfffffffffffffff0\n"
|
|
" and $v0, $v1, $a0\n"
|
|
" # reserve space for context-data on context-stack\n"
|
|
" daddiu $v0, $v0, -176\n"
|
|
" # third arg of make_fcontext() == address of context-function\n"
|
|
" sd $a2, 152($v0)\n"
|
|
" # save global pointer in context-data\n"
|
|
" sd $gp, 136($v0)\n"
|
|
" # psudo instruction compute abs address of label finish based on GP\n"
|
|
" dla $t9, finish\n"
|
|
" # save address of finish as return-address for context-function\n"
|
|
" # will be entered after context-function returns\n"
|
|
" sd $t9, 144($v0)\n"
|
|
" jr $ra # return pointer to context-data\n"
|
|
" nop\n"
|
|
"finish:\n"
|
|
" # reload our gp register (needed for la)\n"
|
|
" daddiu $t0, $sp, -176\n"
|
|
" ld $gp, 136($t0)\n"
|
|
" ld $v0, 160($t0)\n"
|
|
" # call _exit(0)\n"
|
|
" dla $t9, _exit\n"
|
|
" move $a0, $zero\n"
|
|
" jr $t9\n"
|
|
" nop\n"
|
|
".end make_fcontext\n"
|
|
".size make_fcontext, .-make_fcontext\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_ppc32) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl jump_fcontext\n"
|
|
".align 2\n"
|
|
".type jump_fcontext,@function\n"
|
|
"jump_fcontext:\n"
|
|
" # reserve space on stack\n"
|
|
" subi %r1, %r1, 240\n"
|
|
" stw %r13, 152(%r1) # save R13\n"
|
|
" stw %r14, 156(%r1) # save R14\n"
|
|
" stw %r15, 160(%r1) # save R15\n"
|
|
" stw %r16, 164(%r1) # save R16\n"
|
|
" stw %r17, 168(%r1) # save R17\n"
|
|
" stw %r18, 172(%r1) # save R18\n"
|
|
" stw %r19, 176(%r1) # save R19\n"
|
|
" stw %r20, 180(%r1) # save R20\n"
|
|
" stw %r21, 184(%r1) # save R21\n"
|
|
" stw %r22, 188(%r1) # save R22\n"
|
|
" stw %r23, 192(%r1) # save R23\n"
|
|
" stw %r24, 196(%r1) # save R24\n"
|
|
" stw %r25, 200(%r1) # save R25\n"
|
|
" stw %r26, 204(%r1) # save R26\n"
|
|
" stw %r27, 208(%r1) # save R27\n"
|
|
" stw %r28, 212(%r1) # save R28\n"
|
|
" stw %r29, 216(%r1) # save R29\n"
|
|
" stw %r30, 220(%r1) # save R30\n"
|
|
" stw %r31, 224(%r1) # save R31\n"
|
|
" # save CR\n"
|
|
" mfcr %r0\n"
|
|
" stw %r0, 228(%r1)\n"
|
|
" # save LR\n"
|
|
" mflr %r0\n"
|
|
" stw %r0, 232(%r1)\n"
|
|
" # save LR as PC\n"
|
|
" stw %r0, 236(%r1)\n"
|
|
" # test if fpu env should be preserved\n"
|
|
" cmpwi cr7, %r6, 0\n"
|
|
" beq cr7, 1f\n"
|
|
" stfd %f14, 0(%r1) # save F14\n"
|
|
" stfd %f15, 8(%r1) # save F15\n"
|
|
" stfd %f16, 16(%r1) # save F16\n"
|
|
" stfd %f17, 24(%r1) # save F17\n"
|
|
" stfd %f18, 32(%r1) # save F18\n"
|
|
" stfd %f19, 40(%r1) # save F19\n"
|
|
" stfd %f20, 48(%r1) # save F20\n"
|
|
" stfd %f21, 56(%r1) # save F21\n"
|
|
" stfd %f22, 64(%r1) # save F22\n"
|
|
" stfd %f23, 72(%r1) # save F23\n"
|
|
" stfd %f24, 80(%r1) # save F24\n"
|
|
" stfd %f25, 88(%r1) # save F25\n"
|
|
" stfd %f26, 96(%r1) # save F26\n"
|
|
" stfd %f27, 104(%r1) # save F27\n"
|
|
" stfd %f28, 112(%r1) # save F28\n"
|
|
" stfd %f29, 120(%r1) # save F29\n"
|
|
" stfd %f30, 128(%r1) # save F30\n"
|
|
" stfd %f31, 136(%r1) # save F31\n"
|
|
" mffs %f0 # load FPSCR\n"
|
|
" stfd %f0, 144(%r1) # save FPSCR\n"
|
|
"1:\n"
|
|
" # store RSP (pointing to context-data) in R3\n"
|
|
" stw %r1, 0(%r3)\n"
|
|
" # restore RSP (pointing to context-data) from R4\n"
|
|
" mr %r1, %r4\n"
|
|
" # test if fpu env should be preserved\n"
|
|
" cmpwi cr7, %r6, 0\n"
|
|
" beq cr7, 2f\n"
|
|
" lfd %f14, 0(%r1) # restore F14\n"
|
|
" lfd %f15, 8(%r1) # restore F15\n"
|
|
" lfd %f16, 16(%r1) # restore F16\n"
|
|
" lfd %f17, 24(%r1) # restore F17\n"
|
|
" lfd %f18, 32(%r1) # restore F18\n"
|
|
" lfd %f19, 40(%r1) # restore F19\n"
|
|
" lfd %f20, 48(%r1) # restore F20\n"
|
|
" lfd %f21, 56(%r1) # restore F21\n"
|
|
" lfd %f22, 64(%r1) # restore F22\n"
|
|
" lfd %f23, 72(%r1) # restore F23\n"
|
|
" lfd %f24, 80(%r1) # restore F24\n"
|
|
" lfd %f25, 88(%r1) # restore F25\n"
|
|
" lfd %f26, 96(%r1) # restore F26\n"
|
|
" lfd %f27, 104(%r1) # restore F27\n"
|
|
" lfd %f28, 112(%r1) # restore F28\n"
|
|
" lfd %f29, 120(%r1) # restore F29\n"
|
|
" lfd %f30, 128(%r1) # restore F30\n"
|
|
" lfd %f31, 136(%r1) # restore F31\n"
|
|
" lfd %f0, 144(%r1) # load FPSCR\n"
|
|
" mtfsf 0xff, %f0 # restore FPSCR\n"
|
|
"2:\n"
|
|
" lwz %r13, 152(%r1) # restore R13\n"
|
|
" lwz %r14, 156(%r1) # restore R14\n"
|
|
" lwz %r15, 160(%r1) # restore R15\n"
|
|
" lwz %r16, 164(%r1) # restore R16\n"
|
|
" lwz %r17, 168(%r1) # restore R17\n"
|
|
" lwz %r18, 172(%r1) # restore R18\n"
|
|
" lwz %r19, 176(%r1) # restore R19\n"
|
|
" lwz %r20, 180(%r1) # restore R20\n"
|
|
" lwz %r21, 184(%r1) # restore R21\n"
|
|
" lwz %r22, 188(%r1) # restore R22\n"
|
|
" lwz %r23, 192(%r1) # restore R23\n"
|
|
" lwz %r24, 196(%r1) # restore R24\n"
|
|
" lwz %r25, 200(%r1) # restore R25\n"
|
|
" lwz %r26, 204(%r1) # restore R26\n"
|
|
" lwz %r27, 208(%r1) # restore R27\n"
|
|
" lwz %r28, 212(%r1) # restore R28\n"
|
|
" lwz %r29, 216(%r1) # restore R29\n"
|
|
" lwz %r30, 220(%r1) # restore R30\n"
|
|
" lwz %r31, 224(%r1) # restore R31\n"
|
|
" # restore CR\n"
|
|
" lwz %r0, 228(%r1)\n"
|
|
" mtcr %r0\n"
|
|
" # restore LR\n"
|
|
" lwz %r0, 232(%r1)\n"
|
|
" mtlr %r0\n"
|
|
" # load PC\n"
|
|
" lwz %r0, 236(%r1)\n"
|
|
" # restore CTR\n"
|
|
" mtctr %r0\n"
|
|
" # adjust stack\n"
|
|
" addi %r1, %r1, 240\n"
|
|
" # use third arg as return value after jump\n"
|
|
" # use third arg as first arg in context function\n"
|
|
" mr %r3, %r5\n"
|
|
" # jump to context\n"
|
|
" bctr\n"
|
|
".size jump_fcontext, .-jump_fcontext\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_ppc32) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".text\n"
|
|
".globl make_fcontext\n"
|
|
".align 2\n"
|
|
".type make_fcontext,@function\n"
|
|
"make_fcontext:\n"
|
|
" # save return address into R6\n"
|
|
" mflr %r6\n"
|
|
" # first arg of make_fcontext() == top address of context-function\n"
|
|
" # shift address in R3 to lower 16 byte boundary\n"
|
|
" clrrwi %r3, %r3, 4\n"
|
|
" # reserve space for context-data on context-stack\n"
|
|
" # including 64 byte of linkage + parameter area (R1 % 16 == 0)\n"
|
|
" subi %r3, %r3, 304\n"
|
|
" # third arg of make_fcontext() == address of context-function\n"
|
|
" stw %r5, 236(%r3)\n"
|
|
" # load LR\n"
|
|
" mflr %r0\n"
|
|
" # jump to label 1\n"
|
|
" bl 1f\n"
|
|
"1:\n"
|
|
" # load LR into R4\n"
|
|
" mflr %r4\n"
|
|
" # compute abs address of label finish\n"
|
|
" addi %r4, %r4, finish - 1b\n"
|
|
" # restore LR\n"
|
|
" mtlr %r0\n"
|
|
" # save address of finish as return-address for context-function\n"
|
|
" # will be entered after context-function returns\n"
|
|
" stw %r4, 232(%r3)\n"
|
|
" # restore return address from R6\n"
|
|
" mtlr %r6\n"
|
|
" blr # return pointer to context-data\n"
|
|
"finish:\n"
|
|
" # save return address into R0\n"
|
|
" mflr %r0\n"
|
|
" # save return address on stack, set up stack frame\n"
|
|
" stw %r0, 4(%r1)\n"
|
|
" # allocate stack space, R1 % 16 == 0\n"
|
|
" stwu %r1, -16(%r1)\n"
|
|
" # exit code is zero\n"
|
|
" li %r3, 0\n"
|
|
" # exit application\n"
|
|
" bl _exit@plt\n"
|
|
".size make_fcontext, .-make_fcontext\n"
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_ppc64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".globl jump_fcontext\n"
|
|
#if _CALL_ELF == 2
|
|
" .text\n"
|
|
" .align 2\n"
|
|
"jump_fcontext:\n"
|
|
" addis %r2, %r12, .TOC.-jump_fcontext@ha\n"
|
|
" addi %r2, %r2, .TOC.-jump_fcontext@l\n"
|
|
" .localentry jump_fcontext, . - jump_fcontext\n"
|
|
#else
|
|
" .section \".opd\",\"aw\"\n"
|
|
" .align 3\n"
|
|
"jump_fcontext:\n"
|
|
# ifdef _CALL_LINUX
|
|
" .quad .L.jump_fcontext,.TOC.@tocbase,0\n"
|
|
" .type jump_fcontext,@function\n"
|
|
" .text\n"
|
|
" .align 2\n"
|
|
".L.jump_fcontext:\n"
|
|
# else
|
|
" .hidden .jump_fcontext\n"
|
|
" .globl .jump_fcontext\n"
|
|
" .quad .jump_fcontext,.TOC.@tocbase,0\n"
|
|
" .size jump_fcontext,24\n"
|
|
" .type .jump_fcontext,@function\n"
|
|
" .text\n"
|
|
" .align 2\n"
|
|
".jump_fcontext:\n"
|
|
# endif
|
|
#endif
|
|
" # reserve space on stack\n"
|
|
" subi %r1, %r1, 320\n"
|
|
#if _CALL_ELF != 2
|
|
" std %r2, 144(%r1) # save TOC\n"
|
|
#endif
|
|
" std %r14, 152(%r1) # save R14\n"
|
|
" std %r15, 160(%r1) # save R15\n"
|
|
" std %r16, 168(%r1) # save R16\n"
|
|
" std %r17, 176(%r1) # save R17\n"
|
|
" std %r18, 184(%r1) # save R18\n"
|
|
" std %r19, 192(%r1) # save R19\n"
|
|
" std %r20, 200(%r1) # save R20\n"
|
|
" std %r21, 208(%r1) # save R21\n"
|
|
" std %r22, 216(%r1) # save R22\n"
|
|
" std %r23, 224(%r1) # save R23\n"
|
|
" std %r24, 232(%r1) # save R24\n"
|
|
" std %r25, 240(%r1) # save R25\n"
|
|
" std %r26, 248(%r1) # save R26\n"
|
|
" std %r27, 256(%r1) # save R27\n"
|
|
" std %r28, 264(%r1) # save R28\n"
|
|
" std %r29, 272(%r1) # save R29\n"
|
|
" std %r30, 280(%r1) # save R30\n"
|
|
" std %r31, 288(%r1) # save R31\n"
|
|
" # save CR\n"
|
|
" mfcr %r0\n"
|
|
" std %r0, 296(%r1)\n"
|
|
" # save LR\n"
|
|
" mflr %r0\n"
|
|
" std %r0, 304(%r1)\n"
|
|
" # save LR as PC\n"
|
|
" std %r0, 312(%r1)\n"
|
|
" # test if fpu env should be preserved\n"
|
|
" cmpwi cr7, %r6, 0\n"
|
|
" beq cr7, 1f\n"
|
|
" stfd %f14, 0(%r1) # save F14\n"
|
|
" stfd %f15, 8(%r1) # save F15\n"
|
|
" stfd %f16, 16(%r1) # save F16\n"
|
|
" stfd %f17, 24(%r1) # save F17\n"
|
|
" stfd %f18, 32(%r1) # save F18\n"
|
|
" stfd %f19, 40(%r1) # save F19\n"
|
|
" stfd %f20, 48(%r1) # save F20\n"
|
|
" stfd %f21, 56(%r1) # save F21\n"
|
|
" stfd %f22, 64(%r1) # save F22\n"
|
|
" stfd %f23, 72(%r1) # save F23\n"
|
|
" stfd %f24, 80(%r1) # save F24\n"
|
|
" stfd %f25, 88(%r1) # save F25\n"
|
|
" stfd %f26, 96(%r1) # save F26\n"
|
|
" stfd %f27, 104(%r1) # save F27\n"
|
|
" stfd %f28, 112(%r1) # save F28\n"
|
|
" stfd %f29, 120(%r1) # save F29\n"
|
|
" stfd %f30, 128(%r1) # save F30\n"
|
|
" stfd %f31, 136(%r1) # save F31\n"
|
|
"1:\n"
|
|
" # store RSP (pointing to context-data) in R3\n"
|
|
" std %r1, 0(%r3)\n"
|
|
" # restore RSP (pointing to context-data) from R4\n"
|
|
" mr %r1, %r4\n"
|
|
" # test if fpu env should be preserved\n"
|
|
" cmpwi cr7, %r6, 0\n"
|
|
" beq cr7, 2f\n"
|
|
" lfd %f14, 0(%r1) # restore F14\n"
|
|
" lfd %f15, 8(%r1) # restore F15\n"
|
|
" lfd %f16, 16(%r1) # restore F16\n"
|
|
" lfd %f17, 24(%r1) # restore F17\n"
|
|
" lfd %f18, 32(%r1) # restore F18\n"
|
|
" lfd %f19, 40(%r1) # restore F19\n"
|
|
" lfd %f20, 48(%r1) # restore F20\n"
|
|
" lfd %f21, 56(%r1) # restore F21\n"
|
|
" lfd %f22, 64(%r1) # restore F22\n"
|
|
" lfd %f23, 72(%r1) # restore F23\n"
|
|
" lfd %f24, 80(%r1) # restore F24\n"
|
|
" lfd %f25, 88(%r1) # restore F25\n"
|
|
" lfd %f26, 96(%r1) # restore F26\n"
|
|
" lfd %f27, 104(%r1) # restore F27\n"
|
|
" lfd %f28, 112(%r1) # restore F28\n"
|
|
" lfd %f29, 120(%r1) # restore F29\n"
|
|
" lfd %f30, 128(%r1) # restore F30\n"
|
|
" lfd %f31, 136(%r1) # restore F31\n"
|
|
"2:\n"
|
|
#if _CALL_ELF != 2
|
|
" ld %r2, 144(%r1) # restore TOC\n"
|
|
#endif
|
|
" ld %r14, 152(%r1) # restore R14\n"
|
|
" ld %r15, 160(%r1) # restore R15\n"
|
|
" ld %r16, 168(%r1) # restore R16\n"
|
|
" ld %r17, 176(%r1) # restore R17\n"
|
|
" ld %r18, 184(%r1) # restore R18\n"
|
|
" ld %r19, 192(%r1) # restore R19\n"
|
|
" ld %r20, 200(%r1) # restore R20\n"
|
|
" ld %r21, 208(%r1) # restore R21\n"
|
|
" ld %r22, 216(%r1) # restore R22\n"
|
|
" ld %r23, 224(%r1) # restore R23\n"
|
|
" ld %r24, 232(%r1) # restore R24\n"
|
|
" ld %r25, 240(%r1) # restore R25\n"
|
|
" ld %r26, 248(%r1) # restore R26\n"
|
|
" ld %r27, 256(%r1) # restore R27\n"
|
|
" ld %r28, 264(%r1) # restore R28\n"
|
|
" ld %r29, 272(%r1) # restore R29\n"
|
|
" ld %r30, 280(%r1) # restore R30\n"
|
|
" ld %r31, 288(%r1) # restore R31\n"
|
|
" # restore CR\n"
|
|
" ld %r0, 296(%r1)\n"
|
|
" mtcr %r0\n"
|
|
" # restore LR\n"
|
|
" ld %r0, 304(%r1)\n"
|
|
" mtlr %r0\n"
|
|
" # load PC\n"
|
|
" ld %r12, 312(%r1)\n"
|
|
" # restore CTR\n"
|
|
" mtctr %r12\n"
|
|
" # adjust stack\n"
|
|
" addi %r1, %r1, 320\n"
|
|
" # use third arg as return value after jump\n"
|
|
" # use third arg as first arg in context function\n"
|
|
" mr %r3, %r5\n"
|
|
" # jump to context\n"
|
|
" bctr\n"
|
|
#if _CALL_ELF == 2
|
|
" .size jump_fcontext, .-jump_fcontext\n"
|
|
#else
|
|
# ifdef _CALL_LINUX
|
|
" .size .jump_fcontext, .-.L.jump_fcontext\n"
|
|
# else
|
|
" .size .jump_fcontext, .-.jump_fcontext\n"
|
|
# endif
|
|
#endif
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|
|
|
|
#if defined(LIBCONTEXT_PLATFORM_linux_ppc64) && defined(LIBCONTEXT_COMPILER_gcc)
|
|
__asm (
|
|
".globl make_fcontext\n"
|
|
#if _CALL_ELF == 2
|
|
" .text\n"
|
|
" .align 2\n"
|
|
"make_fcontext:\n"
|
|
" addis %r2, %r12, .TOC.-make_fcontext@ha\n"
|
|
" addi %r2, %r2, .TOC.-make_fcontext@l\n"
|
|
" .localentry make_fcontext, . - make_fcontext\n"
|
|
#else
|
|
" .section \".opd\",\"aw\"\n"
|
|
" .align 3\n"
|
|
"make_fcontext:\n"
|
|
# ifdef _CALL_LINUX
|
|
" .quad .L.make_fcontext,.TOC.@tocbase,0\n"
|
|
" .type make_fcontext,@function\n"
|
|
" .text\n"
|
|
" .align 2\n"
|
|
".L.make_fcontext:\n"
|
|
# else
|
|
" .hidden .make_fcontext\n"
|
|
" .globl .make_fcontext\n"
|
|
" .quad .make_fcontext,.TOC.@tocbase,0\n"
|
|
" .size make_fcontext,24\n"
|
|
" .type .make_fcontext,@function\n"
|
|
" .text\n"
|
|
" .align 2\n"
|
|
".make_fcontext:\n"
|
|
# endif
|
|
#endif
|
|
" # save return address into R6\n"
|
|
" mflr %r6\n"
|
|
" # first arg of make_fcontext() == top address of context-stack\n"
|
|
" # shift address in R3 to lower 16 byte boundary\n"
|
|
" clrrdi %r3, %r3, 4\n"
|
|
" # reserve space for context-data on context-stack\n"
|
|
" # including 64 byte of linkage + parameter area (R1 % 16 == 0)\n"
|
|
" subi %r3, %r3, 384\n"
|
|
" # third arg of make_fcontext() == address of context-function\n"
|
|
" # entry point (ELFv2) or descriptor (ELFv1)\n"
|
|
#if _CALL_ELF == 2
|
|
" # save address of context-function entry point\n"
|
|
" std %r5, 312(%r3)\n"
|
|
#else
|
|
" # save address of context-function entry point\n"
|
|
" ld %r4, 0(%r5)\n"
|
|
" std %r4, 312(%r3)\n"
|
|
" # save TOC of context-function\n"
|
|
" ld %r4, 8(%r5)\n"
|
|
" std %r4, 144(%r3)\n"
|
|
#endif
|
|
" # load LR\n"
|
|
" mflr %r0\n"
|
|
" # jump to label 1\n"
|
|
" bl 1f\n"
|
|
"1:\n"
|
|
" # load LR into R4\n"
|
|
" mflr %r4\n"
|
|
" # compute abs address of label finish\n"
|
|
" addi %r4, %r4, finish - 1b\n"
|
|
" # restore LR\n"
|
|
" mtlr %r0\n"
|
|
" # save address of finish as return-address for context-function\n"
|
|
" # will be entered after context-function returns\n"
|
|
" std %r4, 304(%r3)\n"
|
|
" # restore return address from R6\n"
|
|
" mtlr %r6\n"
|
|
" blr # return pointer to context-data\n"
|
|
"finish:\n"
|
|
" # save return address into R0\n"
|
|
" mflr %r0\n"
|
|
" # save return address on stack, set up stack frame\n"
|
|
" std %r0, 8(%r1)\n"
|
|
" # allocate stack space, R1 % 16 == 0\n"
|
|
" stdu %r1, -32(%r1)\n"
|
|
" # exit code is zero\n"
|
|
" li %r3, 0\n"
|
|
" # exit application\n"
|
|
" bl _exit\n"
|
|
" nop\n"
|
|
#if _CALL_ELF == 2
|
|
" .size make_fcontext, .-make_fcontext\n"
|
|
#else
|
|
# ifdef _CALL_LINUX
|
|
" .size .make_fcontext, .-.L.make_fcontext\n"
|
|
# else
|
|
" .size .make_fcontext, .-.make_fcontext\n"
|
|
# endif
|
|
#endif
|
|
".section .note.GNU-stack,\"\",%progbits\n"
|
|
);
|
|
|
|
#endif
|