sim env

2023-07-17 09:26:20 +08:00
parent 25584bf6f5
commit de5eb461f6
25 changed files with 4016 additions and 0 deletions
--- a/tb/sw/src/startup.S
+++ b/tb/sw/src/startup.S
@@ -0,0 +1,156 @@
+
+  .section .text.init
+  .globl _prog_start
+_prog_start:
+
+  li  x1, 0
+  li  x2, 0
+  li  x3, 0
+  li  x4, 0
+  li  x5, 0
+  li  x6, 0
+  li  x7, 0
+  li  x8, 0
+  li  x9, 0
+  li  x10,0
+  li  x11,0
+  li  x12,0
+  li  x13,0
+  li  x14,0
+  li  x15,0
+  li  x16,0
+  li  x17,0
+  li  x18,0
+  li  x19,0
+  li  x20,0
+  li  x21,0
+  li  x22,0
+  li  x23,0
+  li  x24,0
+  li  x25,0
+  li  x26,0
+  li  x27,0
+  li  x28,0
+  li  x29,0
+  li  x30,0
+  li  x31,0
+
+  li t0, 0xffff
+  csrc mie, t0
+
+  li t0, 0xa
+  csrc mstatus, t0
+
+
+    # csrwi satp,0
+    # li  t0,-1
+    # csrw  pmpaddr0,t0
+    # li  t0,31
+    # csrw  pmpcfg0,t0
+    # csrwi medeleg,0
+    # csrwi mideleg,0
+    # li t0, 1
+    # slli t0, t0, 31
+    # csrw  mtvec,t0
+    # csrwi mie, 0
+    # csrwi mstatus,0
+
+  li sp, 0x80001000
+
+
+    # li t1, 0x80000200
+    # li t2, -1
+    # sd t2, 0(t1)
+
+    # li t1,0x80000000
+    # jr t1
+
+  la t0, trap_entry
+  csrw mtvec, t0
+
+
+
+  call main
+
+  li gp, 1;
+  ecall
+
+trap_entry:
+  addi sp, sp, -136
+
+  sw x1,  1* 4(sp)
+  sw x2,  2* 4(sp)
+  sw x3,  3* 4(sp)
+  sw x4,  4* 4(sp)
+  sw x5,  5* 4(sp)
+  sw x6,  6* 4(sp)
+  sw x7,  7* 4(sp)
+  sw x8,  8* 4(sp)
+  sw x9,  9* 4(sp)
+  sw x10, 10*4(sp)
+  sw x11, 11*4(sp)
+  sw x12, 12*4(sp)
+  sw x13, 13*4(sp)
+  sw x14, 14*4(sp)
+  sw x15, 15*4(sp)
+  sw x16, 16*4(sp)
+  sw x17, 17*4(sp)
+  sw x18, 18*4(sp)
+  sw x19, 19*4(sp)
+  sw x20, 20*4(sp)
+  sw x21, 21*4(sp)
+  sw x22, 22*4(sp)
+  sw x23, 23*4(sp)
+  sw x24, 24*4(sp)
+  sw x25, 25*4(sp)
+  sw x26, 26*4(sp)
+  sw x27, 27*4(sp)
+  sw x28, 28*4(sp)
+  sw x29, 29*4(sp)
+  sw x30, 30*4(sp)
+  sw x31, 31*4(sp)
+
+  csrr a0, mcause
+  csrr a1, mepc
+  mv a2, sp
+  jal handle_trap
+  # csrw mepc, a0
+
+
+  # li t0, MSTATUS_MPP
+  # csrs mstatus, t0
+
+  lw x1,  1 *4(sp)
+  lw x2,  2 *4(sp)
+  lw x3,  3 *4(sp)
+  lw x4,  4 *4(sp)
+  lw x5,  5 *4(sp)
+  lw x6,  6 *4(sp)
+  lw x7,  7 *4(sp)
+  lw x8,  8 *4(sp)
+  lw x9,  9 *4(sp)
+  lw x10, 10*4(sp)
+  lw x11, 11*4(sp)
+  lw x12, 12*4(sp)
+  lw x13, 13*4(sp)
+  lw x14, 14*4(sp)
+  lw x15, 15*4(sp)
+  lw x16, 16*4(sp)
+  lw x17, 17*4(sp)
+  lw x18, 18*4(sp)
+  lw x19, 19*4(sp)
+  lw x20, 20*4(sp)
+  lw x21, 21*4(sp)
+  lw x22, 22*4(sp)
+  lw x23, 23*4(sp)
+  lw x24, 24*4(sp)
+  lw x25, 25*4(sp)
+  lw x26, 26*4(sp)
+  lw x27, 27*4(sp)
+  lw x28, 28*4(sp)
+  lw x29, 29*4(sp)
+  lw x30, 30*4(sp)
+  lw x31, 31*4(sp)
+
+  addi sp, sp, 136
+  mret