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FPPS4
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This commit is contained in:
Pavel 2023-11-09 12:44:03 +03:00
parent 1b0782f9c3
commit 7ef791f250
1 changed files with 33 additions and 33 deletions
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66
sys/jit/kern_jit_asm.pas
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@ -134,20 +134,20 @@ begin
Assert(False);
end;
//in/out:r14
procedure uplift_jit_notsafe; assembler;
const
PAGE_SHIFT_2 =PAGE_SHIFT-2;
PAGE_MAP_MASK_2=PAGE_MAP_MASK shl 2;
//in/out:r14
procedure uplift_jit_notsafe; assembler; nostackframe;
label
_ret,
_sigsegv;
var
addr:QWORD;
tmp2:QWORD;
asm
mov %rax,tmp2
mov %r14,addr //origin
//save
mov %rax, - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rax(%r13)
//origin
mov %r14, - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rip(%r13)
//
mov VM_MAXUSER_ADDRESS,%rax
cmp %rax,%r14
@ -170,17 +170,20 @@ asm
or %rax,%r14
//
mov tmp2,%rax //restore
//restore
mov - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rax(%r13) ,%rax
jmp _ret
_sigsegv:
mov tmp2,%rax //restore
//restore
mov - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rax(%r13) ,%rax
call jit_save_ctx
mov addr,%rdi //origin
//origin
mov - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rip(%r13), %rdi
call jit_sigsegv
@ -198,47 +201,44 @@ asm
end;
//in:r14(addr),r15:(mem_size) out:ZF
procedure page_test; assembler;
procedure page_test; assembler; nostackframe;
label
_exit;
var
rdi:QWORD;
rsi:QWORD;
asm
mov %rdi,rdi
mov %rsi,rsi
//save
mov %rdi, - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rdi(%r13)
mov %rsi, - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rsi(%r13)
//
mov %r14,%rdi
mov %r15,%rsi
//addr2:=addr+mem_size-1 (rsi)
lea -1(%rsi,%rdi),%rsi
lea -1(%r15,%r14),%rsi
//high addr (rdi,rsi)
shr PAGE_SHIFT ,%rdi
shr PAGE_SHIFT ,%rsi
and PAGE_MAP_MASK,%rdi
and PAGE_MAP_MASK,%rsi
shr PAGE_SHIFT_2 ,%rdi
shr PAGE_SHIFT_2 ,%rsi
and PAGE_MAP_MASK_2,%rdi
and PAGE_MAP_MASK_2,%rsi
//
cmp %rdi,%rsi
je _exit
//save
mov %rax,- kthread.td_frame.tf_r13 + kthread.td_frame.tf_rax(%r13)
//uplift (rdi,rsi)
lea (,%rdi,4),%rdi
lea (,%rsi,4),%rsi
//
add PAGE_MAP(%rip),%rdi
add PAGE_MAP(%rip),%rsi
//
mov (%rdi),%edi
mov (%rsi),%esi
mov PAGE_MAP(%rip),%rax
mov (%rax,%rdi),%edi
mov (%rax,%rsi),%esi
//restore
mov - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rax(%r13) ,%rax
//filter (rdi,rsi)
and PAGE_OFS_MASK,%rdi
and PAGE_OFS_MASK,%rsi
//
inc %rdi
cmp %rdi,%rsi
_exit:
//
mov rdi,%rdi
mov rsi,%rsi
//restore
mov - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rdi(%r13) ,%rdi
mov - kthread.td_frame.tf_r13 + kthread.td_frame.tf_rsi(%r13) ,%rsi
end;
procedure jit_simple_save_ctx; assembler; nostackframe;