remove "csrrc a5, mstatus, MSTATUS_MIE" in rt_hw_interrupt_enable();

	it will lead to interrupt again in interrupt

3 files changed, 171 insertions, 100 deletions

diff --git a/libcpu/risc-v/e310/context_gcc.S b/libcpu/risc-v/e310/context_gcc.S
index 953937129f..390e3033c0 100644
--- a/libcpu/risc-v/e310/context_gcc.S
+++ b/libcpu/risc-v/e310/context_gcc.S
@@ -30,14 +30,26 @@
  */
     .globl rt_hw_interrupt_disable
 rt_hw_interrupt_disable:
-	ret
+  addi sp, sp, -12
+  sw a5, (sp)
+  csrrc a5, mie, MIP_MEIP|MIP_MTIP|MIP_MSIP
+/*  csrrc a5, mstatus, MSTATUS_MIE*/
+  lw a5, (sp)
+  addi sp, sp, 12
+  ret
 
 /*
  * void rt_hw_interrupt_enable(rt_base_t level);
  */
     .globl rt_hw_interrupt_enable
 rt_hw_interrupt_enable:
-	ret
+  addi sp, sp, -12
+  sw a5, (sp)
+  csrrs a5, mie, MIP_MEIP|MIP_MTIP|MIP_MSIP
+/*  csrrsi a5, mstatus, MSTATUS_MIE*/
+  lw a5, (sp)
+  addi sp, sp, 12
+  ret
 
 /*
  * void rt_hw_context_switch(rt_uint32 from, rt_uint32 to);
@@ -178,5 +190,22 @@ rt_hw_context_switch_to:
     .globl rt_interrupt_to_thread
     .globl rt_hw_context_switch_interrupt
 rt_hw_context_switch_interrupt:
+  addi sp, sp, -16
+  sw s0, 12(sp)
+  sw a0, 8(sp)
+  sw a5, 4(sp)
+  la a0, rt_thread_switch_interrupt_flag
+  beqz a5, _reswitch
+  li a5, 1
+  sw a5, (a0)
+  la a5, rt_interrupt_from_thread
+  lw a0, 8(sp)
+  sw a0, (a5)
 _reswitch:
-	ret
+  la a5, rt_interrupt_to_thread
+  sw a1, (a5)
+  lw a5, 4(sp)
+  lw a0, 8(sp)
+  lw s0, 12(sp)
+  addi sp, sp, 16
+  ret
diff --git a/libcpu/risc-v/e310/entry_gcc.S b/libcpu/risc-v/e310/entry_gcc.S
deleted file mode 100644
index 1f5de24871..0000000000
--- a/libcpu/risc-v/e310/entry_gcc.S
+++ /dev/null
@@ -1,97 +0,0 @@
-// See LICENSE for license details
-
-#ifndef ENTRY_S
-#define ENTRY_S
-
-#include "encoding.h"
-#include "sifive/bits.h"
-
-  .section      .text.entry	
-  .align 2
-  .global trap_entry
-trap_entry:
-  addi sp, sp, -32*REGBYTES
-
-  STORE x1, 1*REGBYTES(sp)
-  STORE x2, 2*REGBYTES(sp)
-  STORE x3, 3*REGBYTES(sp)
-  STORE x4, 4*REGBYTES(sp)
-  STORE x5, 5*REGBYTES(sp)
-  STORE x6, 6*REGBYTES(sp)
-  STORE x7, 7*REGBYTES(sp)
-  STORE x8, 8*REGBYTES(sp)
-  STORE x9, 9*REGBYTES(sp)
-  STORE x10, 10*REGBYTES(sp)
-  STORE x11, 11*REGBYTES(sp)
-  STORE x12, 12*REGBYTES(sp)
-  STORE x13, 13*REGBYTES(sp)
-  STORE x14, 14*REGBYTES(sp)
-  STORE x15, 15*REGBYTES(sp)
-  STORE x16, 16*REGBYTES(sp)
-  STORE x17, 17*REGBYTES(sp)
-  STORE x18, 18*REGBYTES(sp)
-  STORE x19, 19*REGBYTES(sp)
-  STORE x20, 20*REGBYTES(sp)
-  STORE x21, 21*REGBYTES(sp)
-  STORE x22, 22*REGBYTES(sp)
-  STORE x23, 23*REGBYTES(sp)
-  STORE x24, 24*REGBYTES(sp)
-  STORE x25, 25*REGBYTES(sp)
-  STORE x26, 26*REGBYTES(sp)
-  STORE x27, 27*REGBYTES(sp)
-  STORE x28, 28*REGBYTES(sp)
-  STORE x29, 29*REGBYTES(sp)
-  STORE x30, 30*REGBYTES(sp)
-  STORE x31, 31*REGBYTES(sp)
-
-  csrr a0, mcause
-  csrr a1, mepc
-  mv a2, sp
-  call handle_trap
-  csrw mepc, a0
-
-  # Remain in M-mode after mret
-  li t0, MSTATUS_MPP
-  csrs mstatus, t0
-
-  LOAD x1, 1*REGBYTES(sp)
-  LOAD x2, 2*REGBYTES(sp)
-  LOAD x3, 3*REGBYTES(sp)
-  LOAD x4, 4*REGBYTES(sp)
-  LOAD x5, 5*REGBYTES(sp)
-  LOAD x6, 6*REGBYTES(sp)
-  LOAD x7, 7*REGBYTES(sp)
-  LOAD x8, 8*REGBYTES(sp)
-  LOAD x9, 9*REGBYTES(sp)
-  LOAD x10, 10*REGBYTES(sp)
-  LOAD x11, 11*REGBYTES(sp)
-  LOAD x12, 12*REGBYTES(sp)
-  LOAD x13, 13*REGBYTES(sp)
-  LOAD x14, 14*REGBYTES(sp)
-  LOAD x15, 15*REGBYTES(sp)
-  LOAD x16, 16*REGBYTES(sp)
-  LOAD x17, 17*REGBYTES(sp)
-  LOAD x18, 18*REGBYTES(sp)
-  LOAD x19, 19*REGBYTES(sp)
-  LOAD x20, 20*REGBYTES(sp)
-  LOAD x21, 21*REGBYTES(sp)
-  LOAD x22, 22*REGBYTES(sp)
-  LOAD x23, 23*REGBYTES(sp)
-  LOAD x24, 24*REGBYTES(sp)
-  LOAD x25, 25*REGBYTES(sp)
-  LOAD x26, 26*REGBYTES(sp)
-  LOAD x27, 27*REGBYTES(sp)
-  LOAD x28, 28*REGBYTES(sp)
-  LOAD x29, 29*REGBYTES(sp)
-  LOAD x30, 30*REGBYTES(sp)
-  LOAD x31, 31*REGBYTES(sp)
-
-  addi sp, sp, 32*REGBYTES
-  mret
-
-.weak handle_trap
-handle_trap:
-1:
-  j 1b
-	
-#endif
diff --git a/libcpu/risc-v/e310/start_gcc.S b/libcpu/risc-v/e310/start_gcc.S
index 4e9f665bb1..e421cd5bd6 100644
--- a/libcpu/risc-v/e310/start_gcc.S
+++ b/libcpu/risc-v/e310/start_gcc.S
@@ -17,6 +17,8 @@ _start:
 	la gp, __global_pointer$
 .option pop
 	la sp, _sp
+/*disable all interrupt*/
+	csrw mie, 0
 
 #if defined(ENABLE_SMP)
 	smp_pause(t0, t1)
@@ -49,6 +51,7 @@ _start:
 	la a0, __libc_fini_array
 	call atexit
 	call __libc_init_array
+        call _init
 
 #ifndef __riscv_float_abi_soft
 	/* Enable FPU */
@@ -109,3 +112,139 @@ _start:
 	j 1b
 #endif
 	.cfi_endproc
+
+#include "encoding.h"
+#include "sifive/bits.h"
+
+  .section      .text.entry	
+  .align 2
+  .global trap_entry
+trap_entry:
+  addi sp, sp, -32*REGBYTES
+
+  STORE x30, 1*REGBYTES(sp)
+  STORE x31, 2*REGBYTES(sp)
+  STORE x3, 3*REGBYTES(sp)
+  STORE x4, 4*REGBYTES(sp)
+  STORE x5, 5*REGBYTES(sp)
+  STORE x6, 6*REGBYTES(sp)
+  STORE x7, 7*REGBYTES(sp)
+  STORE x8, 8*REGBYTES(sp)
+  STORE x9, 9*REGBYTES(sp)
+  STORE x10, 10*REGBYTES(sp)
+  STORE x11, 11*REGBYTES(sp)
+  STORE x12, 12*REGBYTES(sp)
+  STORE x13, 13*REGBYTES(sp)
+  STORE x14, 14*REGBYTES(sp)
+  STORE x15, 15*REGBYTES(sp)
+  STORE x16, 16*REGBYTES(sp)
+  STORE x17, 17*REGBYTES(sp)
+  STORE x18, 18*REGBYTES(sp)
+  STORE x19, 19*REGBYTES(sp)
+  STORE x20, 20*REGBYTES(sp)
+  STORE x21, 21*REGBYTES(sp)
+  STORE x22, 22*REGBYTES(sp)
+  STORE x23, 23*REGBYTES(sp)
+  STORE x24, 24*REGBYTES(sp)
+  STORE x25, 25*REGBYTES(sp)
+  STORE x26, 26*REGBYTES(sp)
+  STORE x27, 27*REGBYTES(sp)
+  STORE x28, 28*REGBYTES(sp)
+  STORE x1, 31*REGBYTES(sp)
+  STORE x10, 29*REGBYTES(sp)
+  STORE x1, 30*REGBYTES(sp)
+
+  csrr a0, mcause
+  csrr a1, mepc
+  csrw mepc, a0
+
+  call rt_interrupt_enter
+  call rt_hw_trap_irq
+  call handle_m_time_interrupt
+  call rt_interrupt_leave
+
+  la a0, rt_thread_switch_interrupt_flag
+  lw a1, (a0)
+  beqz a1, rt_hw_context_switch_interrupt_do
+
+  csrw mepc, a0
+  # Remain in M-mode after mret
+  li t0, MSTATUS_MPP
+  csrs mstatus, t0
+
+  LOAD x30, 1*REGBYTES(sp)
+  LOAD x31, 2*REGBYTES(sp)
+  LOAD x3,  3*REGBYTES(sp)
+  LOAD x4,  4*REGBYTES(sp)
+  LOAD x5,  5*REGBYTES(sp)
+  LOAD x6,  6*REGBYTES(sp)
+  LOAD x7,  7*REGBYTES(sp)
+  LOAD x8,  8*REGBYTES(sp)
+  LOAD x9,  9*REGBYTES(sp)
+  LOAD x29, 10*REGBYTES(sp)
+  LOAD x11, 11*REGBYTES(sp)
+  LOAD x12, 12*REGBYTES(sp)
+  LOAD x13, 13*REGBYTES(sp)
+  LOAD x14, 14*REGBYTES(sp)
+  LOAD x15, 15*REGBYTES(sp)
+  LOAD x16, 16*REGBYTES(sp)
+  LOAD x17, 17*REGBYTES(sp)
+  LOAD x18, 18*REGBYTES(sp)
+  LOAD x19, 19*REGBYTES(sp)
+  LOAD x20, 20*REGBYTES(sp)
+  LOAD x21, 21*REGBYTES(sp)
+  LOAD x22, 22*REGBYTES(sp)
+  LOAD x23, 23*REGBYTES(sp)
+  LOAD x24, 24*REGBYTES(sp)
+  LOAD x25, 25*REGBYTES(sp)
+  LOAD x26, 26*REGBYTES(sp)
+  LOAD x27, 27*REGBYTES(sp)
+  LOAD x28, 28*REGBYTES(sp)
+  LOAD x10, 31*REGBYTES(sp)
+  csrw mepc, a0
+  LOAD x10, 29*REGBYTES(sp)
+  LOAD x1,  30*REGBYTES(sp)
+  
+
+  addi sp, sp, 32*REGBYTES
+  mret
+
+rt_hw_context_switch_interrupt_do:
+  LOAD a0, rt_interrupt_to_thread
+  LOAD sp, (a0)
+  LOAD x30, 1*REGBYTES(sp)
+  LOAD x31, 2*REGBYTES(sp)
+  LOAD x3,  3*REGBYTES(sp)
+  LOAD x4,  4*REGBYTES(sp)
+  LOAD x5,  5*REGBYTES(sp)
+  LOAD x6,  6*REGBYTES(sp)
+  LOAD x7,  7*REGBYTES(sp)
+  LOAD x8,  8*REGBYTES(sp)
+  LOAD x9,  9*REGBYTES(sp)
+  LOAD x29, 10*REGBYTES(sp)
+  LOAD x11, 11*REGBYTES(sp)
+  LOAD x12, 12*REGBYTES(sp)
+  LOAD x13, 13*REGBYTES(sp)
+  LOAD x14, 14*REGBYTES(sp)
+  LOAD x15, 15*REGBYTES(sp)
+  LOAD x16, 16*REGBYTES(sp)
+  LOAD x17, 17*REGBYTES(sp)
+  LOAD x18, 18*REGBYTES(sp)
+  LOAD x19, 19*REGBYTES(sp)
+  LOAD x20, 20*REGBYTES(sp)
+  LOAD x21, 21*REGBYTES(sp)
+  LOAD x22, 22*REGBYTES(sp)
+  LOAD x23, 23*REGBYTES(sp)
+  LOAD x24, 24*REGBYTES(sp)
+  LOAD x25, 25*REGBYTES(sp)
+  LOAD x26, 26*REGBYTES(sp)
+  LOAD x27, 27*REGBYTES(sp)
+  LOAD x28, 28*REGBYTES(sp)
+  LOAD x10, 31*REGBYTES(sp)
+  csrw mepc, a0
+  LOAD x10, 29*REGBYTES(sp)
+  LOAD x1,  30*REGBYTES(sp)
+  
+
+  addi sp, sp, 32*REGBYTES
+  mret