andrius
/
stage0
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Made Setexpression iterative rather than recursive

This commit is contained in:
Jeremiah Orians 2016-10-01 20:50:06 -04:00
parent 5c0a5e2cf7
commit 2b655476c0
No known key found for this signature in database
GPG Key ID: 7457821534D2ACCD
2 changed files with 22 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
High_level_prototypes/M0-macro.c
View File

@ -133,14 +133,10 @@ struct Token* Tokenize_Line(struct Token* head)
void setExpression(struct Token* p, char match[], char Exp[])
{
if(NULL != p->next)
{
setExpression(p->next, match, Exp);
}
/* Leave macros alone */
if((p->type & macro))
{
setExpression(p->next, match, Exp);
return;
}
@ -149,6 +145,12 @@ void setExpression(struct Token* p, char match[], char Exp[])
{
p->Expression = Exp;
}
if(NULL != p->next)
{
setExpression(p->next, match, Exp);
}
}
void identify_macros(struct Token* p)

27
stage1/M0-macro.s
View File

@ -415,25 +415,28 @@
;; Preserve registers
PUSHR R0 R15
PUSHR R3 R15
PUSHR R4 R15
LOAD32 R3 R0 0 ; Load Next
SWAP R0 R3 ; Protect R0
CMPSKIP.E R0 0 ; if Next is Null
CALLI R15 @setExpression ; Don't recurse
MOVE R0 R3 ; Restore R0
;; Initialize
MOVE R4 R1 ; Put Macro Text in a safe place
:setExpression_0
LOAD32 R3 R0 4 ; Load type into R3
CMPSKIP.NE R3 1 ; If Node is a macro
JUMP @setExpression_Done ; Be done
LOAD32 R3 R0 8 ; Load Text into R3
SWAP R0 R3 ; Prepare for strncmp
CMPSKIP.NE R3 1 ; Check if Macro
JUMP @setExpression_1 ; Move to next if Macro
MOVE R3 R0 ; Preserve node Pointer
LOAD32 R0 R3 8 ; Load Text pointer into R0 for Comparision
COPY R1 R4 ; Put Macro Text for comparision
CALLI R15 @strcmp ; compare Text and Macro Text
JUMP.NE R0 @setExpression_Done
;; Node matches
JUMP.NE R0 @setExpression_1 ; Move to next if not Match
STORE32 R2 R3 12 ; Set node->Expression = Exp
:setExpression_1
LOAD32 R0 R3 0 ; Load Next
JUMP.NZ R0 @setExpression_0 ; Loop if next isn't NULL
:setExpression_Done
;; Restore registers
POPR R4 R15
POPR R3 R15
POPR R0 R15
RET R15