Draft: lab 5 failed

2025-05-03 20:45:34 +08:00
parent 981cae803b
commit e73f90395d
39 changed files with 588 additions and 429 deletions
--- a/kernel/lib/exec.S
+++ b/kernel/lib/exec.S
@@ -0,0 +1,36 @@
+.global user_exec
+user_exec:
+	
+	sub sp, sp, 36 * 8
+	mov x1, x0
+	mov x0, sp
+	mov x2, 36 * 8
+	bl memcpy
+
+	ldp lr, x0,   [sp, 16 * 15]
+	ldp x1, x2,   [sp, 16 * 16]
+	ldr x3,       [sp, 16 * 17]
+	msr spsr_el1, x0
+	msr elr_el1,  x1
+	msr esr_el1,  x2
+	msr sp_el0,   x3
+
+	ldp x0, x1,   [sp, 16 * 0]
+	ldp x2, x3,   [sp, 16 * 1]
+	ldp x4, x5,   [sp, 16 * 2]
+	ldp x6, x7,   [sp, 16 * 3]
+	ldp x8, x9,   [sp, 16 * 4]
+	ldp x10, x11, [sp, 16 * 5]
+	ldp x12, x13, [sp, 16 * 6]
+	ldp x14, x15, [sp, 16 * 7]
+	ldp x16, x17, [sp, 16 * 8]
+	ldp x18, x19, [sp, 16 * 9]
+	ldp x20, x21, [sp, 16 * 10]
+	ldp x22, x23, [sp, 16 * 11]
+	ldp x24, x25, [sp, 16 * 12]
+	ldp x26, x27, [sp, 16 * 13]
+	ldp x28, fp,  [sp, 16 * 14]
+
+	add sp, sp, 36 * 8
+
+	eret