Cours du 13 au 17 octobre

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diff --git a/semestre 3/architecture des ordinateurs/td/25-10-15.md b/semestre 3/architecture des ordinateurs/td/25-10-15.md
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+---
+tags:
+  - sorbonne
+  - informatique
+  - architecture-des-ordinateurs
+  - td
+semestre: 3
+---
+```asm
+beq $8, $9, label # va à label si $8 == $9
+bne $8, $9, label # va à label si $8 != $9
+blez $8, label    # va à label si $8 <= 0
+bltz $8, label    # va à label si $8 < 0
+bgez $8, label    # va à label si $8 >= 0
+bgtz $8, label    # va à label si $8 > 0
+j label           # va à label
+jr r1             # va à l'adresse mémoire dans r1
+```
+
+```asm
+.data
+a:   .word -5
+b:   .word 3
+.text
+# on commence par le nom de la fonction
+main:
+	lui $8, 0x1001
+	lw $9, 0($8)
+	# if
+	bne $9, $0, else
+	# then
+	lw $9, 0($8) # on recharge à chaque fois qu'on l'utilise
+	lw $10, 4($8)
+	addu $9, $9, $10
+	sw $9, 0($8)
+	j endif
+else:
+	lw $9, 0($8)
+	lw $10, 4($8)
+	subu $9, $9, $10
+	sw $9, 0($8)
+endif:
+	ori $2, $0, 10
+	syscall
+```
+
+```asm
+.data
+p: .word 10 # 0 -> $9
+q: .word 20 # 4 -> $10
+i: .word 0  # 8 -> $11
+s: .word 0  # 12 -> $12
+.text
+main:
+	lui $8, 0x1001
+	# i = p
+	lw $9, 0($8)
+	or $11, $0, $9
+	sw $11, 8($8)
+for:
+	# i <= q
+	lw $10, 4($8)
+	lw $11, 8($9)
+	slt $13, $10, $11
+	bne $13, $0, end_for
+	# s += i
+	lw $12, 12($8)
+	lw $11, 8($8)
+	addu $12, $12, $11
+	sw $12, 12($8)
+	# i++
+	lw $11, 8($8)
+	addiu $11, $11, 1
+	sw $11, 8($8)
+	j for
+end_for:
+	# printf("%d", s)
+	ori $2, $0, 1
+	lw $12, 12($8)
+	or $4, $0, $12
+	syscall
+	# exit()
+	ori $2, $0, 10
+	syscall
+```
+
+```asm
+.data
+max: .word 0
+tab: .word -2, 1, 5, -7, 42, -9, 0
+.text
+main:
+	lui $8, 0x1001
+	ori $12, $0, $8
+	addui $8, $8, 4
+	# max = tab[0]
+	lw $9, 4($8)
+	or $10, $0, $9
+	ori $11, $0, $8
+	sw $10, 0($12)
+while:
+	# tab[i] != 0
+	lw $9, 0($8)
+	beq $9, 0, end_while
+	# if tab[i] > max
+	lw $10, 0($12)
+	lw $9, 0($8)
+	slt $10, $10, $9
+	beq $10, $0, skip
+	# max = tab[i]
+	lw $9, 0($8)
+	lw $10, 0($12)
+	or $10, $0, $9
+	sw $10, 0($12)
+skip:
+	# i++
+	addiu $8, $8, 4
+	j while
+end_while:
+	ori $2, $0, 1
+	lw $4, 0($12)
+	syscall
+	ori $2, $0, 10
+	syscall
+```
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