Changeset 86278 in vbox for trunk/src/libs/xpcom18a4

Timestamp:

Sep 24, 2020 8:26:13 PM (4 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

140554

Message:

xpcom/reflect: More shrinking. bugref:9790

File:

• trunk/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_amd64_vbox.asm (modified) (6 diffs)

trunk/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_amd64_vbox.asm

@@ -79 +79 @@
         push    rbx
         push    r12
-        push    r13
 
         ;
@@ -128 +127 @@
         fast_case .fast_1, .fast_0, 0, rsi
 .fast_0:
-        and     rsp, 0ffffffffffffffe0h ; Align the stack on 32 bytes.
         xor     eax, eax
-.make_just_call:
-        call    r11
-
-.return:
+        call    r11                     ; note! stack is aligned here.
+
+.fast_return:
         lea     rsp, [rbp - 8*3]
-        pop     r13
         pop     r12
         pop     rbx
@@ -153 +149 @@
 .slow:
 %endif
+        ; One more push.
+        push    r13
+
         ;
         ; Check that there aren't unreasonably many parameters
@@ -165 +164 @@
         lea     edx, [r12d * 8]
         sub     rsp, rdx
-        and     rsp, 0ffffffffffffffe0h ; 32 byte aligned stack.
+        and     rsp, byte 0ffffffffffffffe0h ; 32 byte aligned stack.
         mov     r10, rsp                ; r10 = next stack parameter.
 
@@ -376 +375 @@
         ; Call the method and return.
         ;
-%ifdef WITH_OPTIMIZATION
-        movzx   eax, ah                 ; AL = number of parameters in XMM registers (variadict only, but easy to do).
-        jmp     .make_just_call
-%else
 .make_call:
         movzx   eax, ah                 ; AL = number of parameters in XMM registers (variadict only, but easy to do).
@@ -392 +387 @@
         leave
         ret
-%endif
 
 .too_many_parameters: