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* converted _FPC_proc___start in OpenBSD's si_dll.inc to pascal

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git-svn-id: trunk@41750 -
This commit is contained in:
nickysn 2019-03-20 14:55:35 +00:00
parent a0c433b171
commit aad032f133
1 changed files with 30 additions and 93 deletions
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123
rtl/openbsd/x86_64/si_dll.inc
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@ -18,7 +18,7 @@
procedure _init; external name '_init';
procedure _FPC_proc___start; forward;
procedure _FPC_proc___start(argc: LongInt; argv: PPChar; envp: Pointer; para1, para2, para3: QWord); forward;
procedure _FPC_proc_start; assembler; nostackframe; public name '_start'; public name '__start';
asm
@ -37,98 +37,35 @@ procedure _FPC_proc_start; assembler; nostackframe; public name '_start'; public
procedure _FPC_proc_haltproc; forward;
function _strrchr(str: PChar; character: LongInt): PChar; forward;
procedure _FPC_proc___start; assembler; nostackframe;
asm
pushq %rbp
movq %rsp, %rbp
subq $64, %rsp
movl %edi, -20(%rbp) { argc }
movq %rsi, -32(%rbp) { argv }
movq %rdx, -40(%rbp) { environment }
movq %rcx, -48(%rbp) { ??? }
movq %r8, -56(%rbp) { ??? }
movq %r9, -64(%rbp) { ??? }
movq environ@GOTPCREL(%rip), %rdx
movq -40(%rbp), %rax
movq %rax, (%rdx)
movq operatingsystem_parameter_envp@GOTPCREL(%rip), %rdx
movq -40(%rbp), %rax
movq %rax, (%rdx)
movl -20(%rbp), %eax
movslq %eax,%rdx
movq operatingsystem_parameter_argc@GOTPCREL(%rip), %rax
movq %rdx, (%rax)
movq operatingsystem_parameter_argv@GOTPCREL(%rip), %rdx
movq -32(%rbp), %rax
movq %rax, (%rdx)
movq -32(%rbp), %rax
movq (%rax), %rax
movq %rax, -8(%rbp)
cmpq $0, -8(%rbp)
je .L2
movq -8(%rbp), %rdi
movl $47, %esi
call _strrchr
movq %rax, %rdx
movq __progname@GOTPCREL(%rip), %rax
movq %rdx, (%rax)
movq __progname@GOTPCREL(%rip), %rax
movq (%rax), %rax
testq %rax, %rax
jne .L4
movq __progname@GOTPCREL(%rip), %rdx
movq -8(%rbp), %rax
movq %rax, (%rdx)
jmp .L6
.L4:
movq __progname@GOTPCREL(%rip), %rax
movq (%rax), %rax
leaq 1(%rax), %rdx
movq __progname@GOTPCREL(%rip), %rax
movq %rdx, (%rax)
.L6:
movq __progname_storage@GOTPCREL(%rip), %rax
movq %rax, -16(%rbp)
jmp .L7
.L8:
movq __progname@GOTPCREL(%rip), %rax
movq (%rax), %rcx
movzbl (%rcx), %edx
movq -16(%rbp), %rax
movb %dl, (%rax)
addq $1, -16(%rbp)
leaq 1(%rcx), %rdx
movq __progname@GOTPCREL(%rip), %rax
movq %rdx, (%rax)
.L7:
movq __progname@GOTPCREL(%rip), %rax
movq (%rax), %rax
movzbl (%rax), %eax
testb %al, %al
je .L9
movq __progname_storage@GOTPCREL(%rip), %rax
leaq 255(%rax), %rax
cmpq %rax, -16(%rbp)
jb .L8
.L9:
movq -16(%rbp), %rax
movb $0, (%rax)
movq __progname@GOTPCREL(%rip), %rdx
movq __progname_storage@GOTPCREL(%rip), %rax
movq %rax, (%rdx)
.L2:
movl $0, %eax
call _init@PLT
movq environ@GOTPCREL(%rip), %rax
movq (%rax), %rdx
movq -32(%rbp), %rsi
movl -20(%rbp), %edi
movl $0, %eax
call PASCALMAIN@PLT
// movl %eax, %edi
// call exit
jmp _FPC_proc_haltproc@PLT
procedure _FPC_proc___start(argc: LongInt; argv: PPChar; envp: Pointer; para1, para2, para3: QWord);
var
I: SizeUInt;
begin
environ:=envp;
operatingsystem_parameter_envp:=envp;
operatingsystem_parameter_argc:=argc;
operatingsystem_parameter_argv:=argv;
if argv[0]<>nil then
begin
__progname:=_strrchr(argv[0], Ord('/'));
if __progname<>nil then
Inc(__progname)
else
__progname:=argv[0];
I:=Low(__progname_storage);
while (I<High(__progname_storage)) and (__progname[I]<>#0) do
begin
__progname_storage[I]:=__progname[I-Low(__progname_storage)];
Inc(I);
end;
__progname_storage[I]:=#0;
__progname:=@__progname_storage;
end;
_init;
PascalMain;
asm
jmp _FPC_proc_haltproc@PLT
end;
end;
procedure _FPC_proc_haltproc; assembler; nostackframe; public name '_haltproc';