orga 2 1erParcial2C2018

typedef struct node_t{
    struct node_t *next;
    struct node_t *prev;
    char *string;
}node;


%define offset_next=0
%define offset_prev=8
%define offset_string=16
%define size=24
%define null 0


;rdi=node**l sil=char c
.borrarTerminadasEn:
    push rbp ;alinea
    mov rbp rsp
    push r12 ;dealinea
    push r13 ;desalinea

    mov r12 rdi
    monv r13 rsi
    .ciclo:
        mov rdi [r12+string]
        mov rsi r13
        call terminadasEn
        cmp rax, 0x01
        je .borrar
        .seguir:
        cmp qword[r12+next], null
        je .fin
        lea r12 [r12+size]
        jmp .ciclo

    .borrar:
        mov r8, [r12+offset_prev]
        mov r9, [r12+offset_next]
        mov [r8+offset_next], r9
        mov [r9+offset_prev], r8
        mov rdi [r12+offset_string]
        call free
        mov rdi [r12]
        call free
        jmp .seguir

    .fin:
        pop r13
        pop r12
        pop rbp
        ret

;rdi=char* string sil= char c
.terminadasEn:
    push rbp
    mov rbp rsp
    xor rax rax
    cmp byte[rdi], null
    je .fin
    .ciclo:
        cmp byte[rdi+1], null
        je .finCiclo
        inc rdi
        jmp .ciclo
    .finCiclo:
        cmp [rdi] sil
        jne .fin
        inc rax
        jmp .fin
    .fin:
        pop rbp
        ret


;rdi = node* n
.SuperConcatenar:
    push rbp ;alinea
    mov rbp rsp
    push r12 ;desalinea
    push r15 ;alinea r15 acum res
    push r14 ;dealinea
    lea rsp [rsp+8]
    xor r14 r14 ;r14=contador de string
    mov r12 rdi
    .ciclo:
        cmp [r12] null
        je .fin
        mov rdi [r12+string]
        call strlen ; rax=largo string
        xor rcx rcx
        mov r8 [r12+string]
        .agregarChar:
            mov r9 [r8+rcx]
            mov [r15+r14] r9
            inc r14
            inc rcx
            cmp rax rcx
            jne .agregarChar
        mov r12 [r12+next]
        jmp .ciclo
    .fin:
        mov rax r15
        lea rsp [rsp-8]
        pop r14
        pop r15
        pop r12
        pop rbp
        ret