!455 合并lwp_check_debug和lwp_check_exit功能到单一lwp_check_debug函数

Merge pull request !455 from jesven/gdb_check_debug

components/lwp/arch/aarch64/cortex-a/lwp_gcc.S

@@ -371,56 +371,6 @@ ret_to_user:
 1:
     eret
 
-.global lwp_check_exit
-lwp_check_exit:
-    SAVE_FPU sp
-    stp x0, x1, [sp, #-0x10]!
-    stp x2, x3, [sp, #-0x10]!
-    stp x4, x5, [sp, #-0x10]!
-    stp x6, x7, [sp, #-0x10]!
-    stp x10, x11, [sp, #-0x10]!
-    stp x12, x13, [sp, #-0x10]!
-    stp x14, x15, [sp, #-0x10]!
-    stp x16, x17, [sp, #-0x10]!
-    stp x18, x19, [sp, #-0x10]!
-    stp x20, x21, [sp, #-0x10]!
-    stp x22, x23, [sp, #-0x10]!
-    stp x24, x25, [sp, #-0x10]!
-    stp x26, x27, [sp, #-0x10]!
-    stp x28, x29, [sp, #-0x10]!
-    mrs x0, fpcr
-    mrs x1, fpsr
-    stp x0, x1, [sp, #-0x10]!
-    stp x29, x30, [sp, #-0x10]!
-
-    bl lwp_check_exit_request
-    cmp x0, xzr
-    bne 1f
-    ldp x29, x30, [sp], #0x10
-    ldp x0, x1, [sp], #0x10
-    msr fpcr, x0
-    msr fpsr, x1
-    ldp x28, x29, [sp], #0x10
-    ldp x26, x27, [sp], #0x10
-    ldp x24, x25, [sp], #0x10
-    ldp x22, x23, [sp], #0x10
-    ldp x20, x21, [sp], #0x10
-    ldp x18, x19, [sp], #0x10
-    ldp x16, x17, [sp], #0x10
-    ldp x14, x15, [sp], #0x10
-    ldp x12, x13, [sp], #0x10
-    ldp x10, x11, [sp], #0x10
-    ldp x6, x7, [sp], #0x10
-    ldp x4, x5, [sp], #0x10
-    ldp x2, x3, [sp], #0x10
-    ldp x0, x1, [sp], #0x10
-    RESTORE_FPU sp
-
-    br x30
-1:
-    mov x0, xzr
-    b sys_exit
-
 /*
 struct rt_hw_exp_stack
 {
@@ -493,9 +443,13 @@ lwp_check_debug:
     stp x0, x1, [sp, #-0x10]!
     stp x29, x30, [sp, #-0x10]!
 
+    bl lwp_check_exit_request
+    cbz x0, 1f
+    mov x0, xzr
+    b sys_exit
+1:
     bl dbg_check_suspend
-    cmp w0, wzr
-    beq lwp_check_debug_quit
+    cbz w0, lwp_check_debug_quit
 
     mrs x2, sp_el0
     sub x2, x2, #8

components/lwp/arch/arm/cortex-a/lwp_gcc.S

@@ -208,18 +208,6 @@ ret_to_user:
     movs pc, lr
 
 #ifdef RT_USING_LWP
-.global lwp_check_exit
-lwp_check_exit:
-    push {r0 - r12, lr}
-    bl lwp_check_exit_request
-    cmp r0, #0
-    beq 1f
-    mov r0, #0
-    bl sys_exit
-1:
-    pop {r0 - r12, pc}
-#endif
-
 .global lwp_check_debug
 lwp_check_debug:
     ldr r0, =rt_dbg_ops
@@ -229,6 +217,12 @@ lwp_check_debug:
     bx  lr
 1:
     push {r0 - r12, lr}
+    bl lwp_check_exit_request
+    cmp r0, #0
+    beq 2f
+    mov r0, #0
+    bl sys_exit
+2:
     bl dbg_check_suspend
     cmp r0, #0
     beq lwp_check_debug_quit
@@ -342,6 +336,7 @@ lwp_thread_return:
     mov r0, #0
     mov r7, #0x01
     svc #0
+#endif
 
 .global check_vfp
 check_vfp:

libcpu/aarch64/common/context_gcc.S

@@ -145,8 +145,7 @@ rt_hw_get_gtimer_frq:
     MOV     SP, X0
 
 #ifdef RT_USING_LWP
-    bl      lwp_check_debug
-    BL      lwp_check_exit
+    BL      lwp_check_debug
 #endif
 
     LDP     X2, X3, [SP], #0x10  /* SPSR and ELR. */
@@ -188,11 +187,8 @@ rt_hw_get_gtimer_frq:
 
 #ifdef RT_USING_LWP
     bl      lwp_check_debug
-    bl      lwp_check_exit
 #endif
 
-    BL      lwp_check_exit
-
     BL      rt_thread_self
     MOV     X19, X0
     BL      lwp_mmu_switch
@@ -235,7 +231,9 @@ rt_hw_get_gtimer_frq:
 
 .macro RESTORE_CONTEXT_WITHOUT_MMU_SWITCH
     /* the SP is already ok */
-    BL      lwp_check_exit
+#ifdef RT_USING_LWP
+    bl      lwp_check_debug
+#endif
 
     LDP     X2, X3, [SP], #0x10  /* SPSR and ELR. */
 

libcpu/arm/cortex-a/context_gcc.S

@@ -248,7 +248,6 @@ rt_hw_context_switch_exit:
 
 #ifdef RT_USING_LWP
     bl lwp_check_debug
-    bl lwp_check_exit
 #endif
 
 #ifdef RT_USING_LWP

libcpu/arm/cortex-a/start_gcc.S

@@ -407,7 +407,7 @@ vector_irq:
     mrs     r4, spsr
     sub     r5, lr, #4
     cps     #Mode_SVC
-    bl      lwp_check_exit
+    bl      lwp_check_debug
     and     r6, r4, #0x1f
     cmp     r6, #0x10
     bne     1f
@@ -507,7 +507,6 @@ rt_hw_context_switch_interrupt_do:
 
 #ifdef RT_USING_LWP
     bl      lwp_check_debug
-    bl      lwp_check_exit
 #endif
 
 #ifdef RT_USING_LWP