[reactos] 01/01: [CRT] Add CFI annotatiions to memmove function

[Jérôme Gardou]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=0c34c067c461d00c290e76...

commit 0c34c067c461d00c290e76e8066b226e47eeec43
Author:     Jérôme Gardou [e-mail]
AuthorDate: Tue Mar 9 19:41:15 2021 +0100
Commit:     Jérôme Gardou [e-mail]
CommitDate: Tue Mar 9 19:42:49 2021 +0100

[CRT] Add CFI annotatiions to memmove function
---
 sdk/lib/crt/mem/i386/memmove_asm.s | 41 ++++++++++++++++++++++++++------------
 1 file changed, 28 insertions(+), 13 deletions(-)

diff --git a/sdk/lib/crt/mem/i386/memmove_asm.s b/sdk/lib/crt/mem/i386/memmove_asm.s
index 299b2cc8d38..35b0ee37566 100644
--- a/sdk/lib/crt/mem/i386/memmove_asm.s
+++ b/sdk/lib/crt/mem/i386/memmove_asm.s
@@ -14,15 +14,20 @@ _memcpy:
 FUNC _memmove
    FPO 0, 3, 5, 2, 1, FRAME_NONFPO
    push ebp
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ebp, 0
    mov ebp, esp
-	
+	CFI_DEF_CFA_REGISTER ebp
+
    push esi
+	CFI_REL_OFFSET esi, -4
    push edi
-	
+	CFI_REL_OFFSET edi, -8
+
    mov	edi, [ebp + 8]
    mov	esi, [ebp + 12]
    mov	ecx, [ebp + 16]
-	
+
    cmp	edi, esi
    jbe	.CopyUp
    mov	eax, ecx
@@ -30,9 +35,9 @@ FUNC _memmove
    cmp	edi, eax
    jb .CopyDown

-.CopyUp:	
+.CopyUp:
    cld
-	
+
    cmp	ecx, 16
    jb .L1
    mov edx, ecx
@@ -53,29 +58,34 @@ FUNC _memmove
    rep movsd
    mov ecx, edx
    and ecx, 3
-.L1:	
+.L1:
    test ecx, ecx
    je .L3
    rep movsb
 .L3:
    mov eax, [ebp + 8]
    pop edi
+	CFI_SAME_VALUE edi
    pop esi
+	CFI_SAME_VALUE esi
    leave
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_SAME_VALUE ebp
+	CFI_DEF_CFA_REGISTER esp
    ret

.CopyDown:
    std
-        
+
    add edi, ecx
    add esi, ecx
-	
+
    cmp ecx, 16
    jb .L4
    mov edx, ecx
    test edi, 3
    je .L5
-	
+
 /*
  * Make the destination dword aligned
  */
@@ -86,10 +96,10 @@ FUNC _memmove
    dec edi
    rep movsb
    mov ecx, edx
-	
+
    sub esi, 3
    sub edi, 3
-.L6:	
+.L6:
    shr ecx, 2
    rep movsd
    mov ecx, edx
@@ -97,14 +107,19 @@ FUNC _memmove
    je .L7
    add esi, 3
    add edi, 3
-.L8:	
+.L8:
    rep movsb
 .L7:
    cld
    mov eax, [ebp + 8]
    pop edi
+	CFI_SAME_VALUE edi
    pop esi
+	CFI_SAME_VALUE esi
    leave
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_SAME_VALUE ebp
+	CFI_DEF_CFA_REGISTER esp
    ret
 .L5:
    sub edi, 4
@@ -113,7 +128,7 @@ FUNC _memmove

.L4:
    test ecx, ecx
-	je .L7	
+	je .L7
    dec esi
    dec edi
    jmp .L8