feat: kernel/libcpu: fit into ilp32d

23 files changed, 242 insertions, 256 deletions

diff --git a/include/rthw.h b/include/rthw.h
index f7712cb52f..672e820918 100644
--- a/include/rthw.h
+++ b/include/rthw.h
@@ -172,8 +172,8 @@ void rt_hw_context_switch_interrupt(rt_ubase_t from, rt_ubase_t to, rt_thread_t
  * Hardware Layer Backtrace Service
  */
 struct rt_hw_backtrace_frame {
-    rt_base_t fp;
-    rt_base_t pc;
+    rt_uintptr_t fp;
+    rt_uintptr_t pc;
 };
 
 rt_err_t rt_hw_backtrace_frame_get(rt_thread_t thread, struct rt_hw_backtrace_frame *frame);
diff --git a/include/rttypes.h b/include/rttypes.h
index 0cd12d7614..0b614a492a 100644
--- a/include/rttypes.h
+++ b/include/rttypes.h
@@ -33,8 +33,6 @@ extern "C" {
  */
 
 typedef int                             rt_bool_t;      /**< boolean type */
-typedef signed long                     rt_base_t;      /**< Nbit CPU related data type */
-typedef unsigned long                   rt_ubase_t;     /**< Nbit unsigned CPU related data type */
 
 #ifndef RT_USING_ARCH_DATA_TYPE
 #ifdef RT_USING_LIBC
@@ -63,12 +61,24 @@ typedef unsigned long long              rt_uint64_t;    /**< 64bit unsigned inte
 #endif /* RT_USING_LIBC */
 #endif /* RT_USING_ARCH_DATA_TYPE */
 
+#ifdef ARCH_CPU_64BIT
+typedef rt_int64_t                      rt_base_t;      /**< Nbit CPU related data type */
+typedef rt_uint64_t                     rt_ubase_t;     /**< Nbit unsigned CPU related data type */
+#else
+typedef rt_int32_t                      rt_base_t;      /**< Nbit CPU related data type */
+typedef rt_uint32_t                     rt_ubase_t;     /**< Nbit unsigned CPU related data type */
+#endif
+
 #if defined(RT_USING_LIBC) && !defined(RT_USING_NANO)
 typedef size_t                          rt_size_t;      /**< Type for size number */
 typedef ssize_t                         rt_ssize_t;     /**< Used for a count of bytes or an error indication */
+typedef intptr_t                        rt_intptr_t;    /**< Type for signed pointer length integer */
+typedef uintptr_t                       rt_uintptr_t;   /**< Type for unsigned pointer length integer */
 #else
 typedef rt_ubase_t                      rt_size_t;      /**< Type for size number */
 typedef rt_base_t                       rt_ssize_t;     /**< Used for a count of bytes or an error indication */
+typedef rt_ubase_t                      rt_intptr_t;    /**< Type for signed pointer length integer */
+typedef rt_base_t                       rt_uintptr_t;   /**< Type for unsigned pointer length integer */
 #endif /* defined(RT_USING_LIBC) && !defined(RT_USING_NANO) */
 
 typedef rt_base_t                       rt_err_t;       /**< Type for error number */
diff --git a/libcpu/risc-v/virt64/backtrace.c b/libcpu/risc-v/virt64/backtrace.c
index 47eba3fb94..f76cd90c12 100644
--- a/libcpu/risc-v/virt64/backtrace.c
+++ b/libcpu/risc-v/virt64/backtrace.c
@@ -67,7 +67,7 @@ rt_inline rt_err_t _bt_uaddr(rt_lwp_t lwp, rt_ubase_t *fp, struct rt_hw_backtrac
 rt_err_t rt_hw_backtrace_frame_unwind(rt_thread_t thread, struct rt_hw_backtrace_frame *frame)
 {
     rt_err_t rc = -RT_ERROR;
-    rt_ubase_t *fp = (rt_ubase_t *)frame->fp;
+    rt_uintptr_t *fp = (rt_uintptr_t *)frame->fp;
 
     if (fp && !((long)fp & 0x7))
     {
diff --git a/libcpu/risc-v/virt64/context_gcc.S b/libcpu/risc-v/virt64/context_gcc.S
index d7be609efc..b656aa74ac 100644
--- a/libcpu/risc-v/virt64/context_gcc.S
+++ b/libcpu/risc-v/virt64/context_gcc.S
@@ -15,56 +15,56 @@
 #include "cpuport.h"
 #include "stackframe.h"
 
-.macro PUSH_8 reg
+.macro PUSH_REG reg
     addi    sp, sp, -REGBYTES
     STORE   \reg, (sp)
 .endm
 
-.macro POP_8 reg
+.macro POP_REG reg
     LOAD    \reg, (sp)
     addi    sp, sp, REGBYTES
 .endm
 
 .macro RESERVE_CONTEXT
-    PUSH_8  tp
-    PUSH_8  ra
-    PUSH_8  s0
-    PUSH_8  s1
-    PUSH_8  s2
-    PUSH_8  s3
-    PUSH_8  s4
-    PUSH_8  s5
-    PUSH_8  s6
-    PUSH_8  s7
-    PUSH_8  s8
-    PUSH_8  s9
-    PUSH_8  s10
-    PUSH_8  s11
+    PUSH_REG  tp
+    PUSH_REG  ra
+    PUSH_REG  s0
+    PUSH_REG  s1
+    PUSH_REG  s2
+    PUSH_REG  s3
+    PUSH_REG  s4
+    PUSH_REG  s5
+    PUSH_REG  s6
+    PUSH_REG  s7
+    PUSH_REG  s8
+    PUSH_REG  s9
+    PUSH_REG  s10
+    PUSH_REG  s11
     csrr    s11, sstatus
     li      s10, (SSTATUS_SPP)
     or      s11, s11, s10
-    PUSH_8  s11
+    PUSH_REG  s11
     addi    sp, sp, -REGBYTES
 .endm
 
 .macro RESTORE_CONTEXT
     addi    sp, sp, REGBYTES
-    POP_8   s11
+    POP_REG   s11
     csrw    sstatus, s11
-    POP_8   s11
-    POP_8   s10
-    POP_8   s9
-    POP_8   s8
-    POP_8   s7
-    POP_8   s6
-    POP_8   s5
-    POP_8   s4
-    POP_8   s3
-    POP_8   s2
-    POP_8   s1
-    POP_8   s0
-    POP_8   ra
-    POP_8   tp
+    POP_REG   s11
+    POP_REG   s10
+    POP_REG   s9
+    POP_REG   s8
+    POP_REG   s7
+    POP_REG   s6
+    POP_REG   s5
+    POP_REG   s4
+    POP_REG   s3
+    POP_REG   s2
+    POP_REG   s1
+    POP_REG   s0
+    POP_REG   ra
+    POP_REG   tp
     csrw    sepc, ra
 .endm
 
diff --git a/libcpu/risc-v/virt64/cpuport.c b/libcpu/risc-v/virt64/cpuport.c
index 33795d1891..3b00e7368a 100644
--- a/libcpu/risc-v/virt64/cpuport.c
+++ b/libcpu/risc-v/virt64/cpuport.c
@@ -16,7 +16,6 @@
 #include "stack.h"
 #include <sbi.h>
 #include <encoding.h>
-#include "regtypes.h"
 
 #define K_SSTATUS_DEFAULT (SSTATUS_SPP | SSTATUS_SPIE | SSTATUS_SUM | SSTATUS_FS)
 
@@ -36,7 +35,7 @@ volatile rt_ubase_t rt_interrupt_to_thread = 0;
  */
 volatile rt_ubase_t rt_thread_switch_interrupt_flag = 0;
 
-void *_rt_hw_stack_init(rt_uintreg_t *sp, rt_uintreg_t ra, rt_uintreg_t sstatus)
+void *_rt_hw_stack_init(rt_ubase_t *sp, rt_ubase_t ra, rt_ubase_t sstatus)
 {
     (*--sp) = 0;                                /* tp */
     (*--sp) = ra;                               /* ra */
@@ -81,17 +80,17 @@ rt_uint8_t *rt_hw_stack_init(void *tentry,
                              rt_uint8_t *stack_addr,
                              void *texit)
 {
-    rt_uintreg_t *sp = (rt_uintreg_t *)stack_addr;
+    rt_ubase_t *sp = (rt_ubase_t *)stack_addr;
     // we use a strict alignment requirement for Q extension
-    sp = (rt_uintreg_t *)RT_ALIGN_DOWN((rt_uintreg_t)sp, 16);
+    sp = (rt_ubase_t *)RT_ALIGN_DOWN((rt_ubase_t)sp, 16);
 
-    (*--sp) = (rt_uintreg_t)tentry;
-    (*--sp) = (rt_uintreg_t)parameter;
-    (*--sp) = (rt_uintreg_t)texit;
+    (*--sp) = (rt_ubase_t)tentry;
+    (*--sp) = (rt_ubase_t)parameter;
+    (*--sp) = (rt_ubase_t)texit;
 
     /* compatible to RESTORE_CONTEXT */
     extern void _rt_thread_entry(void);
-    return (rt_uint8_t *)_rt_hw_stack_init(sp, (rt_uintreg_t)_rt_thread_entry, K_SSTATUS_DEFAULT);
+    return (rt_uint8_t *)_rt_hw_stack_init(sp, (rt_ubase_t)_rt_thread_entry, K_SSTATUS_DEFAULT);
 }
 
 /*
diff --git a/libcpu/risc-v/virt64/ext_context.h b/libcpu/risc-v/virt64/ext_context.h
index 70c2cfd12c..df918fb551 100644
--- a/libcpu/risc-v/virt64/ext_context.h
+++ b/libcpu/risc-v/virt64/ext_context.h
@@ -28,38 +28,38 @@
  */
 
 #ifdef ENABLE_FPU
-#define FPU_CTX_F0_OFF  REGBYTES * 0  /* offsetof(fpu_context_t, fpustatus.f[0])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F1_OFF  REGBYTES * 1  /* offsetof(fpu_context_t, fpustatus.f[1])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F2_OFF  REGBYTES * 2  /* offsetof(fpu_context_t, fpustatus.f[2])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F3_OFF  REGBYTES * 3  /* offsetof(fpu_context_t, fpustatus.f[3])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F4_OFF  REGBYTES * 4  /* offsetof(fpu_context_t, fpustatus.f[4])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F5_OFF  REGBYTES * 5  /* offsetof(fpu_context_t, fpustatus.f[5])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F6_OFF  REGBYTES * 6  /* offsetof(fpu_context_t, fpustatus.f[6])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F7_OFF  REGBYTES * 7  /* offsetof(fpu_context_t, fpustatus.f[7])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F8_OFF  REGBYTES * 8  /* offsetof(fpu_context_t, fpustatus.f[8])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F9_OFF  REGBYTES * 9  /* offsetof(fpu_context_t, fpustatus.f[9])  - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F10_OFF REGBYTES * 10 /* offsetof(fpu_context_t, fpustatus.f[10]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F11_OFF REGBYTES * 11 /* offsetof(fpu_context_t, fpustatus.f[11]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F12_OFF REGBYTES * 12 /* offsetof(fpu_context_t, fpustatus.f[12]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F13_OFF REGBYTES * 13 /* offsetof(fpu_context_t, fpustatus.f[13]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F14_OFF REGBYTES * 14 /* offsetof(fpu_context_t, fpustatus.f[14]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F15_OFF REGBYTES * 15 /* offsetof(fpu_context_t, fpustatus.f[15]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F16_OFF REGBYTES * 16 /* offsetof(fpu_context_t, fpustatus.f[16]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F17_OFF REGBYTES * 17 /* offsetof(fpu_context_t, fpustatus.f[17]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F18_OFF REGBYTES * 18 /* offsetof(fpu_context_t, fpustatus.f[18]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F19_OFF REGBYTES * 19 /* offsetof(fpu_context_t, fpustatus.f[19]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F20_OFF REGBYTES * 20 /* offsetof(fpu_context_t, fpustatus.f[20]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F21_OFF REGBYTES * 21 /* offsetof(fpu_context_t, fpustatus.f[21]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F22_OFF REGBYTES * 22 /* offsetof(fpu_context_t, fpustatus.f[22]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F23_OFF REGBYTES * 23 /* offsetof(fpu_context_t, fpustatus.f[23]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F24_OFF REGBYTES * 24 /* offsetof(fpu_context_t, fpustatus.f[24]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F25_OFF REGBYTES * 25 /* offsetof(fpu_context_t, fpustatus.f[25]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F26_OFF REGBYTES * 26 /* offsetof(fpu_context_t, fpustatus.f[26]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F27_OFF REGBYTES * 27 /* offsetof(fpu_context_t, fpustatus.f[27]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F28_OFF REGBYTES * 28 /* offsetof(fpu_context_t, fpustatus.f[28]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F29_OFF REGBYTES * 29 /* offsetof(fpu_context_t, fpustatus.f[29]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F30_OFF REGBYTES * 30 /* offsetof(fpu_context_t, fpustatus.f[30]) - offsetof(fpu_context_t, fpustatus.f[0]) */
-#define FPU_CTX_F31_OFF REGBYTES * 31 /* offsetof(fpu_context_t, fpustatus.f[31]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F0_OFF  (REGBYTES * 0)  /* offsetof(fpu_context_t, fpustatus.f[0])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F1_OFF  (REGBYTES * 1)  /* offsetof(fpu_context_t, fpustatus.f[1])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F2_OFF  (REGBYTES * 2)  /* offsetof(fpu_context_t, fpustatus.f[2])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F3_OFF  (REGBYTES * 3)  /* offsetof(fpu_context_t, fpustatus.f[3])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F4_OFF  (REGBYTES * 4)  /* offsetof(fpu_context_t, fpustatus.f[4])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F5_OFF  (REGBYTES * 5)  /* offsetof(fpu_context_t, fpustatus.f[5])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F6_OFF  (REGBYTES * 6)  /* offsetof(fpu_context_t, fpustatus.f[6])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F7_OFF  (REGBYTES * 7)  /* offsetof(fpu_context_t, fpustatus.f[7])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F8_OFF  (REGBYTES * 8)  /* offsetof(fpu_context_t, fpustatus.f[8])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F9_OFF  (REGBYTES * 9)  /* offsetof(fpu_context_t, fpustatus.f[9])  - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F10_OFF (REGBYTES * 10) /* offsetof(fpu_context_t, fpustatus.f[10]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F11_OFF (REGBYTES * 11) /* offsetof(fpu_context_t, fpustatus.f[11]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F12_OFF (REGBYTES * 12) /* offsetof(fpu_context_t, fpustatus.f[12]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F13_OFF (REGBYTES * 13) /* offsetof(fpu_context_t, fpustatus.f[13]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F14_OFF (REGBYTES * 14) /* offsetof(fpu_context_t, fpustatus.f[14]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F15_OFF (REGBYTES * 15) /* offsetof(fpu_context_t, fpustatus.f[15]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F16_OFF (REGBYTES * 16) /* offsetof(fpu_context_t, fpustatus.f[16]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F17_OFF (REGBYTES * 17) /* offsetof(fpu_context_t, fpustatus.f[17]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F18_OFF (REGBYTES * 18) /* offsetof(fpu_context_t, fpustatus.f[18]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F19_OFF (REGBYTES * 19) /* offsetof(fpu_context_t, fpustatus.f[19]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F20_OFF (REGBYTES * 20) /* offsetof(fpu_context_t, fpustatus.f[20]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F21_OFF (REGBYTES * 21) /* offsetof(fpu_context_t, fpustatus.f[21]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F22_OFF (REGBYTES * 22) /* offsetof(fpu_context_t, fpustatus.f[22]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F23_OFF (REGBYTES * 23) /* offsetof(fpu_context_t, fpustatus.f[23]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F24_OFF (REGBYTES * 24) /* offsetof(fpu_context_t, fpustatus.f[24]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F25_OFF (REGBYTES * 25) /* offsetof(fpu_context_t, fpustatus.f[25]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F26_OFF (REGBYTES * 26) /* offsetof(fpu_context_t, fpustatus.f[26]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F27_OFF (REGBYTES * 27) /* offsetof(fpu_context_t, fpustatus.f[27]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F28_OFF (REGBYTES * 28) /* offsetof(fpu_context_t, fpustatus.f[28]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F29_OFF (REGBYTES * 29) /* offsetof(fpu_context_t, fpustatus.f[29]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F30_OFF (REGBYTES * 30) /* offsetof(fpu_context_t, fpustatus.f[30]) - offsetof(fpu_context_t, fpustatus.f[0]) */
+#define FPU_CTX_F31_OFF (REGBYTES * 31) /* offsetof(fpu_context_t, fpustatus.f[31]) - offsetof(fpu_context_t, fpustatus.f[0]) */
 #endif /* ENABLE_FPU */
 
 /**
diff --git a/libcpu/risc-v/virt64/interrupt.h b/libcpu/risc-v/virt64/interrupt.h
index 6d6929121e..5b7ff57a47 100644
--- a/libcpu/risc-v/virt64/interrupt.h
+++ b/libcpu/risc-v/virt64/interrupt.h
@@ -15,7 +15,6 @@
 
 #include <rthw.h>
 #include "stack.h"
-#include "regtypes.h"
 
 enum
 {
@@ -42,6 +41,6 @@ int rt_hw_plic_irq_disable(int irq_number);
 void rt_hw_interrupt_init(void);
 void rt_hw_interrupt_mask(int vector);
 rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler, void *param, const char *name);
-void handle_trap(rt_uintreg_t xcause, rt_uintreg_t xtval, rt_uintreg_t xepc, struct rt_hw_stack_frame *sp);
+void handle_trap(rt_ubase_t xcause, rt_ubase_t xtval, rt_ubase_t xepc, struct rt_hw_stack_frame *sp);
 
 #endif
diff --git a/libcpu/risc-v/virt64/mmu.c b/libcpu/risc-v/virt64/mmu.c
index 9d1bfd92e8..0531d5ae39 100644
--- a/libcpu/risc-v/virt64/mmu.c
+++ b/libcpu/risc-v/virt64/mmu.c
@@ -61,28 +61,28 @@ void *rt_hw_mmu_tbl_get()
 static int _map_one_page(struct rt_aspace *aspace, void *va, void *pa,
                          size_t attr)
 {
-    rt_size_t l1_off, l2_off, l3_off;
-    rt_size_t *mmu_l1, *mmu_l2, *mmu_l3;
+    rt_ubase_t l1_off, l2_off, l3_off;
+    rt_ubase_t *mmu_l1, *mmu_l2, *mmu_l3;
 
     l1_off = GET_L1((size_t)va);
     l2_off = GET_L2((size_t)va);
     l3_off = GET_L3((size_t)va);
 
-    mmu_l1 = ((rt_size_t *)aspace->page_table) + l1_off;
+    mmu_l1 = ((rt_ubase_t *)aspace->page_table) + l1_off;
 
     if (PTE_USED(*mmu_l1))
     {
-        mmu_l2 = (rt_size_t *)PPN_TO_VPN(GET_PADDR(*mmu_l1), PV_OFFSET);
+        mmu_l2 = (rt_ubase_t *)PPN_TO_VPN(GET_PADDR(*mmu_l1), PV_OFFSET);
     }
     else
     {
-        mmu_l2 = (rt_size_t *)rt_pages_alloc(0);
+        mmu_l2 = (rt_ubase_t *)rt_pages_alloc(0);
 
         if (mmu_l2)
         {
             rt_memset(mmu_l2, 0, PAGE_SIZE);
             rt_hw_cpu_dcache_clean(mmu_l2, PAGE_SIZE);
-            *mmu_l1 = COMBINEPTE((rt_size_t)VPN_TO_PPN(mmu_l2, PV_OFFSET),
+            *mmu_l1 = COMBINEPTE((rt_ubase_t)VPN_TO_PPN(mmu_l2, PV_OFFSET),
                                  PAGE_DEFAULT_ATTR_NEXT);
             rt_hw_cpu_dcache_clean(mmu_l1, sizeof(*mmu_l1));
         }
@@ -96,18 +96,18 @@ static int _map_one_page(struct rt_aspace *aspace, void *va, void *pa,
     {
         RT_ASSERT(!PAGE_IS_LEAF(*(mmu_l2 + l2_off)));
         mmu_l3 =
-            (rt_size_t *)PPN_TO_VPN(GET_PADDR(*(mmu_l2 + l2_off)), PV_OFFSET);
+            (rt_ubase_t *)PPN_TO_VPN(GET_PADDR(*(mmu_l2 + l2_off)), PV_OFFSET);
     }
     else
     {
-        mmu_l3 = (rt_size_t *)rt_pages_alloc(0);
+        mmu_l3 = (rt_ubase_t *)rt_pages_alloc(0);
 
         if (mmu_l3)
         {
             rt_memset(mmu_l3, 0, PAGE_SIZE);
             rt_hw_cpu_dcache_clean(mmu_l3, PAGE_SIZE);
             *(mmu_l2 + l2_off) =
-                COMBINEPTE((rt_size_t)VPN_TO_PPN(mmu_l3, PV_OFFSET),
+                COMBINEPTE((rt_ubase_t)VPN_TO_PPN(mmu_l3, PV_OFFSET),
                            PAGE_DEFAULT_ATTR_NEXT);
             rt_hw_cpu_dcache_clean(mmu_l2, sizeof(*mmu_l2));
             // declares a reference to parent page table
@@ -122,7 +122,7 @@ static int _map_one_page(struct rt_aspace *aspace, void *va, void *pa,
     RT_ASSERT(!PTE_USED(*(mmu_l3 + l3_off)));
     // declares a reference to parent page table
     rt_page_ref_inc((void *)mmu_l3, 0);
-    *(mmu_l3 + l3_off) = COMBINEPTE((rt_size_t)pa, attr);
+    *(mmu_l3 + l3_off) = COMBINEPTE((rt_ubase_t)pa, attr);
     rt_hw_cpu_dcache_clean(mmu_l3 + l3_off, sizeof(*(mmu_l3 + l3_off)));
     return 0;
 }
@@ -165,7 +165,7 @@ void *rt_hw_mmu_map(struct rt_aspace *aspace, void *v_addr, void *p_addr,
     return NULL;
 }
 
-static void _unmap_pte(rt_size_t *pentry, rt_size_t *lvl_entry[], int level)
+static void _unmap_pte(rt_ubase_t *pentry, rt_ubase_t *lvl_entry[], int level)
 {
     int loop_flag = 1;
     while (loop_flag)
@@ -195,26 +195,26 @@ static void _unmap_pte(rt_size_t *pentry, rt_size_t *lvl_entry[], int level)
 
 static size_t _unmap_area(struct rt_aspace *aspace, void *v_addr, size_t size)
 {
-    rt_size_t loop_va = __UMASKVALUE((rt_size_t)v_addr, PAGE_OFFSET_MASK);
+    rt_ubase_t loop_va = __UMASKVALUE((rt_ubase_t)v_addr, PAGE_OFFSET_MASK);
     size_t unmapped = 0;
 
     int i = 0;
-    rt_size_t lvl_off[3];
-    rt_size_t *lvl_entry[3];
-    lvl_off[0] = (rt_size_t)GET_L1(loop_va);
-    lvl_off[1] = (rt_size_t)GET_L2(loop_va);
-    lvl_off[2] = (rt_size_t)GET_L3(loop_va);
+    rt_ubase_t lvl_off[3];
+    rt_ubase_t *lvl_entry[3];
+    lvl_off[0] = (rt_ubase_t)GET_L1(loop_va);
+    lvl_off[1] = (rt_ubase_t)GET_L2(loop_va);
+    lvl_off[2] = (rt_ubase_t)GET_L3(loop_va);
     unmapped = 1 << (ARCH_PAGE_SHIFT + ARCH_INDEX_WIDTH * 2ul);
 
-    rt_size_t *pentry;
-    lvl_entry[i] = ((rt_size_t *)aspace->page_table + lvl_off[i]);
+    rt_ubase_t *pentry;
+    lvl_entry[i] = ((rt_ubase_t *)aspace->page_table + lvl_off[i]);
     pentry = lvl_entry[i];
 
     // find leaf page table entry
     while (PTE_USED(*pentry) && !PAGE_IS_LEAF(*pentry))
     {
         i += 1;
-        lvl_entry[i] = ((rt_size_t *)PPN_TO_VPN(GET_PADDR(*pentry), PV_OFFSET) +
+        lvl_entry[i] = ((rt_ubase_t *)PPN_TO_VPN(GET_PADDR(*pentry), PV_OFFSET) +
                         lvl_off[i]);
         pentry = lvl_entry[i];
         unmapped >>= ARCH_INDEX_WIDTH;
@@ -277,8 +277,8 @@ static inline void _init_region(void *vaddr, size_t size)
 #define KERN_SPACE_SIZE     ((size_t)USER_VADDR_START - 0x1000)
 #endif
 
-int rt_hw_mmu_map_init(rt_aspace_t aspace, void *v_address, rt_size_t size,
-                       rt_size_t *vtable, rt_size_t pv_off)
+int rt_hw_mmu_map_init(rt_aspace_t aspace, void *v_address, rt_ubase_t size,
+                       rt_ubase_t *vtable, rt_ubase_t pv_off)
 {
     size_t l1_off, va_s, va_e;
     rt_base_t level;
@@ -288,8 +288,8 @@ int rt_hw_mmu_map_init(rt_aspace_t aspace, void *v_address, rt_size_t size,
         return -1;
     }
 
-    va_s = (rt_size_t)v_address;
-    va_e = ((rt_size_t)v_address) + size - 1;
+    va_s = (rt_ubase_t)v_address;
+    va_e = ((rt_ubase_t)v_address) + size - 1;
 
     if (va_e < va_s)
     {
@@ -330,15 +330,15 @@ static inline uintptr_t _get_level_size(int level)
     return 1ul << (ARCH_PAGE_SHIFT + (max_level - level) * ARCH_INDEX_WIDTH);
 }
 
-static rt_size_t *_query(struct rt_aspace *aspace, void *vaddr, int *level)
+static rt_ubase_t *_query(struct rt_aspace *aspace, void *vaddr, int *level)
 {
-    rt_size_t l1_off, l2_off, l3_off;
-    rt_size_t *mmu_l1, *mmu_l2, *mmu_l3;
-    rt_size_t pa;
+    rt_ubase_t l1_off, l2_off, l3_off;
+    rt_ubase_t *mmu_l1, *mmu_l2, *mmu_l3;
+    rt_ubase_t pa;
 
-    l1_off = GET_L1((rt_size_t)vaddr);
-    l2_off = GET_L2((rt_size_t)vaddr);
-    l3_off = GET_L3((rt_size_t)vaddr);
+    l1_off = GET_L1((rt_uintptr_t)vaddr);
+    l2_off = GET_L2((rt_uintptr_t)vaddr);
+    l3_off = GET_L3((rt_uintptr_t)vaddr);
 
     if (!aspace)
     {
@@ -346,7 +346,7 @@ static rt_size_t *_query(struct rt_aspace *aspace, void *vaddr, int *level)
         return RT_NULL;
     }
 
-    mmu_l1 = ((rt_size_t *)aspace->page_table) + l1_off;
+    mmu_l1 = ((rt_ubase_t *)aspace->page_table) + l1_off;
 
     if (PTE_USED(*mmu_l1))
     {
@@ -356,7 +356,7 @@ static rt_size_t *_query(struct rt_aspace *aspace, void *vaddr, int *level)
             return mmu_l1;
         }
 
-        mmu_l2 = (rt_size_t *)PPN_TO_VPN(GET_PADDR(*mmu_l1), PV_OFFSET);
+        mmu_l2 = (rt_ubase_t *)PPN_TO_VPN(GET_PADDR(*mmu_l1), PV_OFFSET);
 
         if (PTE_USED(*(mmu_l2 + l2_off)))
         {
@@ -366,7 +366,7 @@ static rt_size_t *_query(struct rt_aspace *aspace, void *vaddr, int *level)
                 return mmu_l2 + l2_off;
             }
 
-            mmu_l3 = (rt_size_t *)PPN_TO_VPN(GET_PADDR(*(mmu_l2 + l2_off)),
+            mmu_l3 = (rt_ubase_t *)PPN_TO_VPN(GET_PADDR(*(mmu_l2 + l2_off)),
                                              PV_OFFSET);
 
             if (PTE_USED(*(mmu_l3 + l3_off)))
@@ -383,7 +383,7 @@ static rt_size_t *_query(struct rt_aspace *aspace, void *vaddr, int *level)
 void *rt_hw_mmu_v2p(struct rt_aspace *aspace, void *vaddr)
 {
     int level;
-    uintptr_t *pte = _query(aspace, vaddr, &level);
+    rt_ubase_t *pte = _query(aspace, vaddr, &level);
     uintptr_t paddr;
 
     if (pte)
@@ -398,17 +398,17 @@ void *rt_hw_mmu_v2p(struct rt_aspace *aspace, void *vaddr)
     return (void *)paddr;
 }
 
-static int _noncache(uintptr_t *pte)
+static int _noncache(rt_base_t *pte)
 {
     return 0;
 }
 
-static int _cache(uintptr_t *pte)
+static int _cache(rt_base_t *pte)
 {
     return 0;
 }
 
-static int (*control_handler[MMU_CNTL_DUMMY_END])(uintptr_t *pte) = {
+static int (*control_handler[MMU_CNTL_DUMMY_END])(rt_base_t *pte) = {
     [MMU_CNTL_CACHE] = _cache,
     [MMU_CNTL_NONCACHE] = _noncache,
 };
@@ -420,14 +420,14 @@ int rt_hw_mmu_control(struct rt_aspace *aspace, void *vaddr, size_t size,
     int err = -RT_EINVAL;
     void *vend = vaddr + size;
 
-    int (*handler)(uintptr_t * pte);
+    int (*handler)(rt_base_t *pte);
     if (cmd >= 0 && cmd < MMU_CNTL_DUMMY_END)
     {
         handler = control_handler[cmd];
 
         while (vaddr < vend)
         {
-            uintptr_t *pte = _query(aspace, vaddr, &level);
+            rt_base_t *pte = _query(aspace, vaddr, &level);
             void *range_end = vaddr + _get_level_size(level);
             RT_ASSERT(range_end <= vend);
 
@@ -487,7 +487,7 @@ void rt_hw_mmu_setup(rt_aspace_t aspace, struct mem_desc *mdesc, int desc_nr)
                                                 mdesc->vaddr_start + 1,
                                     .prefer = (void *)mdesc->vaddr_start};
 
-        if (mdesc->paddr_start == (rt_size_t)ARCH_MAP_FAILED)
+        if (mdesc->paddr_start == (rt_uintptr_t)ARCH_MAP_FAILED)
             mdesc->paddr_start = mdesc->vaddr_start + PV_OFFSET;
 
         rt_aspace_map_phy_static(aspace, &mdesc->varea, &hint, attr,
@@ -499,13 +499,13 @@ void rt_hw_mmu_setup(rt_aspace_t aspace, struct mem_desc *mdesc, int desc_nr)
     rt_page_cleanup();
 }
 
-#define SATP_BASE ((size_t)SATP_MODE << SATP_MODE_OFFSET)
+#define SATP_BASE ((rt_ubase_t)SATP_MODE << SATP_MODE_OFFSET)
 void rt_hw_mem_setup_early(void)
 {
-    rt_size_t pv_off;
-    rt_size_t ps = 0x0;
-    rt_size_t vs = 0x0;
-    rt_size_t *early_pgtbl = (size_t *)(((size_t)&__bss_end + 4095) & ~0xfff);
+    rt_ubase_t pv_off;
+    rt_ubase_t ps = 0x0;
+    rt_ubase_t vs = 0x0;
+    rt_ubase_t *early_pgtbl = (rt_ubase_t *)(((size_t)&__bss_end + 4095) & ~0xfff);
 
     /* calculate pv_offset */
     void *symb_pc;
@@ -539,8 +539,8 @@ void rt_hw_mem_setup_early(void)
         vs = ps - pv_off;
 
         /* relocate region */
-        rt_size_t vs_idx = GET_L1(vs);
-        rt_size_t ve_idx = GET_L1(vs + 0x80000000);
+        rt_ubase_t vs_idx = GET_L1(vs);
+        rt_ubase_t ve_idx = GET_L1(vs + 0x80000000);
         for (size_t i = vs_idx; i < ve_idx; i++)
         {
             early_pgtbl[i] = COMBINEPTE(ps, PAGE_ATTR_RWX | PTE_G | PTE_V);
@@ -557,7 +557,7 @@ void rt_hw_mem_setup_early(void)
 
 void *rt_hw_mmu_pgtbl_create(void)
 {
-    size_t *mmu_table;
+    rt_ubase_t *mmu_table;
     mmu_table = (rt_ubase_t *)rt_pages_alloc_ext(0, PAGE_ANY_AVAILABLE);
     if (!mmu_table)
     {
diff --git a/libcpu/risc-v/virt64/mmu.h b/libcpu/risc-v/virt64/mmu.h
index dee72c8624..e5385d2bf2 100644
--- a/libcpu/risc-v/virt64/mmu.h
+++ b/libcpu/risc-v/virt64/mmu.h
@@ -30,7 +30,7 @@ struct mem_desc
 {
     rt_size_t vaddr_start;
     rt_size_t vaddr_end;
-    rt_size_t paddr_start;
+    rt_ubase_t paddr_start;
     rt_size_t attr;
     struct rt_varea varea;
 };
@@ -43,8 +43,8 @@ struct mem_desc
 #define GET_PPN(pte)                                                           \
     (__PARTBIT(pte, PTE_PPN_SHIFT, PHYSICAL_ADDRESS_WIDTH_BITS - PTE_PPN_SHIFT))
 #define GET_PADDR(pte)            (GET_PPN(pte) << PAGE_OFFSET_BIT)
-#define VPN_TO_PPN(vaddr, pv_off) (((rt_size_t)(vaddr)) + (pv_off))
-#define PPN_TO_VPN(paddr, pv_off) (((rt_size_t)(paddr)) - (pv_off))
+#define VPN_TO_PPN(vaddr, pv_off) (((rt_uintptr_t)(vaddr)) + (pv_off))
+#define PPN_TO_VPN(paddr, pv_off) (((rt_uintptr_t)(paddr)) - (pv_off))
 #define COMBINEVADDR(l1_off, l2_off, l3_off)                                   \
     (((l1_off) << VPN2_SHIFT) | ((l2_off) << VPN1_SHIFT) |                     \
      ((l3_off) << VPN0_SHIFT))
@@ -57,11 +57,11 @@ struct mem_desc
 #define MMU_MAP_ERROR_CONFLICT   -4
 
 void *rt_hw_mmu_tbl_get(void);
-int rt_hw_mmu_map_init(rt_aspace_t aspace, void *v_address, rt_size_t size,
-                       rt_size_t *vtable, rt_size_t pv_off);
+int rt_hw_mmu_map_init(rt_aspace_t aspace, void *v_address, rt_ubase_t size,
+                       rt_ubase_t *vtable, rt_ubase_t pv_off);
 void rt_hw_mmu_setup(rt_aspace_t aspace, struct mem_desc *mdesc, int desc_nr);
-void rt_hw_mmu_kernel_map_init(rt_aspace_t aspace, rt_size_t vaddr_start,
-                               rt_size_t size);
+void rt_hw_mmu_kernel_map_init(rt_aspace_t aspace, rt_ubase_t vaddr_start,
+                               rt_ubase_t size);
 void *rt_hw_mmu_map(rt_aspace_t aspace, void *v_addr, void *p_addr, size_t size,
                     size_t attr);
 void rt_hw_mmu_unmap(rt_aspace_t aspace, void *v_addr, size_t size);
diff --git a/libcpu/risc-v/virt64/plic.c b/libcpu/risc-v/virt64/plic.c
index 0fe8da9567..bd87df0e62 100644
--- a/libcpu/risc-v/virt64/plic.c
+++ b/libcpu/risc-v/virt64/plic.c
@@ -114,7 +114,7 @@ void plic_complete(int irq)
 
 void plic_set_ie(rt_uint32_t word_index, rt_uint32_t val)
 {
-    volatile void *plic_ie = (void *)(rt_size_t)(plic_base + PLIC_ENABLE_BASE + 0x80 + word_index * 4);
+    volatile void *plic_ie = (void *)(rt_ubase_t)(plic_base + PLIC_ENABLE_BASE + 0x80 + word_index * 4);
     writel(val, plic_ie);
 }
 
diff --git a/libcpu/risc-v/virt64/regtypes.h b/libcpu/risc-v/virt64/regtypes.h
deleted file mode 100644
index 14a7410676..0000000000
--- a/libcpu/risc-v/virt64/regtypes.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (c) 2006-2024, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2024-07-15     WangShun     The first version
- */
-
-#ifndef REGTYPES_H__
-#define REGTYPES_H__
-#include <rtconfig.h>
-#if defined(RT_USING_RV64ILP32)
-typedef unsigned long long rt_uintreg_t;
-#else
-typedef unsigned long rt_uintreg_t;
-#endif
-#endif /* REGTYPES_H__ */
diff --git a/libcpu/risc-v/virt64/riscv.h b/libcpu/risc-v/virt64/riscv.h
index 2b28703d64..4adaaf1034 100644
--- a/libcpu/risc-v/virt64/riscv.h
+++ b/libcpu/risc-v/virt64/riscv.h
@@ -6,26 +6,23 @@
  * Change Logs:
  * Date           Author       Notes
  * 2021-01-30     lizhirui     first version
+ * 2024-08-28     RT-Thread    Fit into rv64ilp32 ABI
  */
 
 #ifndef __RISCV_H__
 #define __RISCV_H__
 
 #include <encoding.h>
-#include <rtconfig.h>
 
-#if defined(RT_USING_RV64ILP32)
+/* using unsigned long long for the case of rv64ilp32 */
 #define __SIZE(bit) (1ULL << (bit))
 #define __MASK(bit) (__SIZE(bit) - 1ULL)
-#else
-#define __SIZE(bit) (1UL << (bit))
-#define __MASK(bit) (__SIZE(bit) - 1UL)
-#endif /* RT_USING_RV64ILP32 */
+
 #define __UMASK(bit) (~(__MASK(bit)))
 #define __MASKVALUE(value,maskvalue) ((value) & (maskvalue))
 #define __UMASKVALUE(value,maskvalue) ((value) & (~(maskvalue)))
-#define __CHECKUPBOUND(value,bit_count) (!(((rt_size_t)value) & (~__MASK(bit_count))))
-#define __CHECKALIGN(value,start_bit) (!(((rt_size_t)value) & (__MASK(start_bit))))
+#define __CHECKUPBOUND(value,bit_count) (!(((rt_ubase_t)value) & (~__MASK(bit_count))))
+#define __CHECKALIGN(value,start_bit) (!(((rt_ubase_t)value) & (__MASK(start_bit))))
 
 #define __PARTBIT(value,start_bit,length) (((value) >> (start_bit)) & __MASK(length))
 
diff --git a/libcpu/risc-v/virt64/riscv_mmu.h b/libcpu/risc-v/virt64/riscv_mmu.h
index fd4781ec98..c2e317c347 100644
--- a/libcpu/risc-v/virt64/riscv_mmu.h
+++ b/libcpu/risc-v/virt64/riscv_mmu.h
@@ -88,7 +88,7 @@
 #define ARCH_INDEX_SIZE         (1ul << ARCH_INDEX_WIDTH)
 #define ARCH_INDEX_MASK         (ARCH_INDEX_SIZE - 1)
 
-#define ARCH_MAP_FAILED         ((void *)0x8000000000000000)
+#define ARCH_MAP_FAILED         ((void *)-1)
 
 void mmu_set_pagetable(rt_ubase_t addr);
 void mmu_enable_user_page_access(void);
diff --git a/libcpu/risc-v/virt64/syscall_c.c b/libcpu/risc-v/virt64/syscall_c.c
index 2abe1d065b..ceffd94dbc 100644
--- a/libcpu/risc-v/virt64/syscall_c.c
+++ b/libcpu/risc-v/virt64/syscall_c.c
@@ -26,7 +26,7 @@
 #include "riscv_mmu.h"
 #include "stack.h"
 
-typedef rt_size_t (*syscallfunc_t)(rt_size_t, rt_size_t, rt_size_t, rt_size_t, rt_size_t, rt_size_t, rt_size_t);
+typedef rt_ubase_t (*syscallfunc_t)(rt_ubase_t, rt_ubase_t, rt_ubase_t, rt_ubase_t, rt_ubase_t, rt_ubase_t, rt_ubase_t);
 
 void syscall_handler(struct rt_hw_stack_frame *regs)
 {
diff --git a/libcpu/risc-v/virt64/trap.c b/libcpu/risc-v/virt64/trap.c
index b24be3baca..3b0f86fe0e 100644
--- a/libcpu/risc-v/virt64/trap.c
+++ b/libcpu/risc-v/virt64/trap.c
@@ -61,7 +61,7 @@ void dump_regs(struct rt_hw_stack_frame *regs)
     rt_kprintf("\t%s\n", (regs->sstatus & SSTATUS_SPP) ? "Last Privilege is Supervisor Mode" : "Last Privilege is User Mode");
     rt_kprintf("\t%s\n", (regs->sstatus & SSTATUS_SUM) ? "Permit to Access User Page" : "Not Permit to Access User Page");
     rt_kprintf("\t%s\n", (regs->sstatus & (1 << 19)) ? "Permit to Read Executable-only Page" : "Not Permit to Read Executable-only Page");
-    rt_uintreg_t satp_v = read_csr(satp);
+    rt_ubase_t satp_v = read_csr(satp);
     rt_kprintf("satp = 0x%p\n", satp_v);
     rt_kprintf("\tCurrent Page Table(Physical) = 0x%p\n", __MASKVALUE(satp_v, __MASK(44)) << PAGE_OFFSET_BIT);
     rt_kprintf("\tCurrent ASID = 0x%p\n", __MASKVALUE(satp_v >> 44, __MASK(16)) << PAGE_OFFSET_BIT);
@@ -150,9 +150,9 @@ static const char *get_exception_msg(int id)
 
 #ifdef RT_USING_SMART
 #include "lwp.h"
-void handle_user(rt_size_t scause, rt_size_t stval, rt_size_t sepc, struct rt_hw_stack_frame *sp)
+void handle_user(rt_ubase_t scause, rt_ubase_t stval, rt_ubase_t sepc, struct rt_hw_stack_frame *sp)
 {
-    rt_size_t id = __MASKVALUE(scause, __MASK(63UL));
+    rt_ubase_t id = __MASKVALUE(scause, __MASK(63UL));
     struct rt_lwp *lwp;
 
     /* user page fault */
@@ -275,9 +275,9 @@ static int illegal_inst_recoverable(rt_ubase_t stval, struct rt_hw_stack_frame *
 #endif
 
 static void handle_nested_trap_panic(
-    rt_size_t cause,
-    rt_size_t tval,
-    rt_size_t epc,
+    rt_ubase_t cause,
+    rt_ubase_t tval,
+    rt_ubase_t epc,
     struct rt_hw_stack_frame *eframe)
 {
     LOG_E("\n-------- [SEVER ERROR] --------");
@@ -291,10 +291,10 @@ static void handle_nested_trap_panic(
 #define PAGE_FAULT (id == EP_LOAD_PAGE_FAULT || id == EP_STORE_PAGE_FAULT)
 
 /* Trap entry */
-void handle_trap(rt_uintreg_t scause, rt_uintreg_t stval, rt_uintreg_t sepc, struct rt_hw_stack_frame *sp)
+void handle_trap(rt_ubase_t scause, rt_ubase_t stval, rt_ubase_t sepc, struct rt_hw_stack_frame *sp)
 {
     ENTER_TRAP;
-    rt_uintreg_t id = __MASKVALUE(scause, __MASK(63UL));
+    rt_ubase_t id = __MASKVALUE(scause, __MASK(63UL));
     const char *msg;
 
     /* supervisor external interrupt */
@@ -316,7 +316,7 @@ void handle_trap(rt_uintreg_t scause, rt_uintreg_t stval, rt_uintreg_t sepc, str
     {
         // trap cannot nested when handling another trap / interrupt
         CHECK_NESTED_PANIC(scause, stval, sepc, sp);
-        rt_uintreg_t id = __MASKVALUE(scause, __MASK(63UL));
+        rt_ubase_t id = __MASKVALUE(scause, __MASK(63UL));
         const char *msg;
 
         if (scause >> 63)
diff --git a/src/ipc.c b/src/ipc.c
index 5ffcf017c2..3c6e82949b 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -769,7 +769,7 @@ rt_err_t rt_sem_control(rt_sem_t sem, int cmd, void *arg)
         rt_ubase_t value;
 
         /* get value */
-        value = (rt_ubase_t)arg;
+        value = (rt_uintptr_t)arg;
         level = rt_spin_lock_irqsave(&(sem->spinlock));
 
         /* resume all waiting thread */
@@ -787,7 +787,7 @@ rt_err_t rt_sem_control(rt_sem_t sem, int cmd, void *arg)
         rt_ubase_t max_value;
         rt_bool_t need_schedule = RT_FALSE;
 
-        max_value = (rt_uint16_t)((rt_ubase_t)arg);
+        max_value = (rt_uint16_t)((rt_uintptr_t)arg);
         if (max_value > RT_SEM_VALUE_MAX || max_value < 1)
         {
             return -RT_EINVAL;
diff --git a/src/kservice.c b/src/kservice.c
index 915850e89d..5a59345b3e 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -93,8 +93,8 @@ rt_weak void rt_hw_cpu_shutdown(void)
 
 #ifdef __GNUC__
     #define RT_HW_BACKTRACE_FRAME_GET_SELF(frame) do {          \
-        (frame)->fp = (rt_base_t)__builtin_frame_address(0U);   \
-        (frame)->pc = ({__label__ pc; pc: (rt_base_t)&&pc;});   \
+        (frame)->fp = (rt_uintptr_t)__builtin_frame_address(0U);   \
+        (frame)->pc = ({__label__ pc; pc: (rt_uintptr_t)&&pc;});   \
     } while (0)
 
 #else
@@ -545,7 +545,7 @@ rt_err_t rt_backtrace_thread(rt_thread_t thread)
 
 static void cmd_backtrace(int argc, char** argv)
 {
-    rt_ubase_t pid;
+    rt_uintptr_t pid;
     char *end_ptr;
 
     if (argc != 2)
@@ -778,8 +778,8 @@ rt_inline void _slab_info(rt_size_t *total,
  */
 void rt_system_heap_init_generic(void *begin_addr, void *end_addr)
 {
-    rt_ubase_t begin_align = RT_ALIGN((rt_ubase_t)begin_addr, RT_ALIGN_SIZE);
-    rt_ubase_t end_align   = RT_ALIGN_DOWN((rt_ubase_t)end_addr, RT_ALIGN_SIZE);
+    rt_uintptr_t begin_align = RT_ALIGN((rt_uintptr_t)begin_addr, RT_ALIGN_SIZE);
+    rt_uintptr_t end_align   = RT_ALIGN_DOWN((rt_uintptr_t)end_addr, RT_ALIGN_SIZE);
 
     RT_ASSERT(end_align > begin_align);
 
@@ -988,17 +988,17 @@ rt_weak void *rt_malloc_align(rt_size_t size, rt_size_t align)
     if (ptr != RT_NULL)
     {
         /* the allocated memory block is aligned */
-        if (((rt_ubase_t)ptr & (align - 1)) == 0)
+        if (((rt_uintptr_t)ptr & (align - 1)) == 0)
         {
-            align_ptr = (void *)((rt_ubase_t)ptr + align);
+            align_ptr = (void *)((rt_uintptr_t)ptr + align);
         }
         else
         {
-            align_ptr = (void *)(((rt_ubase_t)ptr + (align - 1)) & ~(align - 1));
+            align_ptr = (void *)(((rt_uintptr_t)ptr + (align - 1)) & ~(align - 1));
         }
 
         /* set the pointer before alignment pointer to the real pointer */
-        *((rt_ubase_t *)((rt_ubase_t)align_ptr - sizeof(void *))) = (rt_ubase_t)ptr;
+        *((rt_uintptr_t *)((rt_uintptr_t)align_ptr - sizeof(void *))) = (rt_uintptr_t)ptr;
 
         ptr = align_ptr;
     }
@@ -1019,7 +1019,7 @@ rt_weak void rt_free_align(void *ptr)
 
     /* NULL check */
     if (ptr == RT_NULL) return;
-    real_ptr = (void *) * (rt_ubase_t *)((rt_ubase_t)ptr - sizeof(void *));
+    real_ptr = (void *) * (rt_uintptr_t *)((rt_uintptr_t)ptr - sizeof(void *));
     rt_free(real_ptr);
 }
 RTM_EXPORT(rt_free_align);
diff --git a/src/mem.c b/src/mem.c
index 64bf0fe018..26cba6d404 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -58,7 +58,7 @@
 
 struct rt_small_mem_item
 {
-    rt_ubase_t              pool_ptr;         /**< small memory object addr */
+    rt_uintptr_t            pool_ptr;         /**< small memory object addr */
     rt_size_t               next;             /**< next free item */
     rt_size_t               prev;             /**< prev free item */
 #ifdef RT_USING_MEMTRACE
@@ -82,19 +82,19 @@ struct rt_small_mem
     rt_size_t                   mem_size_aligned;       /**< aligned memory size */
 };
 
-#define MIN_SIZE (sizeof(rt_ubase_t) + sizeof(rt_size_t) + sizeof(rt_size_t))
+#define MIN_SIZE (sizeof(rt_uintptr_t) + sizeof(rt_size_t) + sizeof(rt_size_t))
 
 #define MEM_MASK ((~(rt_size_t)0) - 1)
 
-#define MEM_USED(_mem)       ((((rt_base_t)(_mem)) & MEM_MASK) | 0x1)
-#define MEM_FREED(_mem)      ((((rt_base_t)(_mem)) & MEM_MASK) | 0x0)
+#define MEM_USED(_mem)       ((((rt_uintptr_t)(_mem)) & MEM_MASK) | 0x1)
+#define MEM_FREED(_mem)      ((((rt_uintptr_t)(_mem)) & MEM_MASK) | 0x0)
 #define MEM_ISUSED(_mem)   \
-                      (((rt_base_t)(((struct rt_small_mem_item *)(_mem))->pool_ptr)) & (~MEM_MASK))
+                      (((rt_uintptr_t)(((struct rt_small_mem_item *)(_mem))->pool_ptr)) & (~MEM_MASK))
 #define MEM_POOL(_mem)     \
-    ((struct rt_small_mem *)(((rt_base_t)(((struct rt_small_mem_item *)(_mem))->pool_ptr)) & (MEM_MASK)))
+    ((struct rt_small_mem *)(((rt_uintptr_t)(((struct rt_small_mem_item *)(_mem))->pool_ptr)) & (MEM_MASK)))
 #define MEM_SIZE(_heap, _mem)      \
-    (((struct rt_small_mem_item *)(_mem))->next - ((rt_ubase_t)(_mem) - \
-    (rt_ubase_t)((_heap)->heap_ptr)) - RT_ALIGN(sizeof(struct rt_small_mem_item), RT_ALIGN_SIZE))
+    (((struct rt_small_mem_item *)(_mem))->next - ((rt_uintptr_t)(_mem) - \
+    (rt_uintptr_t)((_heap)->heap_ptr)) - RT_ALIGN(sizeof(struct rt_small_mem_item), RT_ALIGN_SIZE))
 
 #define MIN_SIZE_ALIGNED     RT_ALIGN(MIN_SIZE, RT_ALIGN_SIZE)
 #define SIZEOF_STRUCT_MEM    RT_ALIGN(sizeof(struct rt_small_mem_item), RT_ALIGN_SIZE)
@@ -173,12 +173,12 @@ rt_smem_t rt_smem_init(const char    *name,
 {
     struct rt_small_mem_item *mem;
     struct rt_small_mem *small_mem;
-    rt_ubase_t start_addr, begin_align, end_align, mem_size;
+    rt_uintptr_t start_addr, begin_align, end_align, mem_size;
 
-    small_mem = (struct rt_small_mem *)RT_ALIGN((rt_ubase_t)begin_addr, RT_ALIGN_SIZE);
-    start_addr = (rt_ubase_t)small_mem + sizeof(*small_mem);
-    begin_align = RT_ALIGN((rt_ubase_t)start_addr, RT_ALIGN_SIZE);
-    end_align   = RT_ALIGN_DOWN((rt_ubase_t)begin_addr + size, RT_ALIGN_SIZE);
+    small_mem = (struct rt_small_mem *)RT_ALIGN((rt_uintptr_t)begin_addr, RT_ALIGN_SIZE);
+    start_addr = (rt_uintptr_t)small_mem + sizeof(*small_mem);
+    begin_align = RT_ALIGN((rt_uintptr_t)start_addr, RT_ALIGN_SIZE);
+    end_align   = RT_ALIGN_DOWN((rt_uintptr_t)begin_addr + size, RT_ALIGN_SIZE);
 
     /* alignment addr */
     if ((end_align > (2 * SIZEOF_STRUCT_MEM)) &&
@@ -190,7 +190,7 @@ rt_smem_t rt_smem_init(const char    *name,
     else
     {
         rt_kprintf("mem init, error begin address 0x%x, and end address 0x%x\n",
-                   (rt_ubase_t)begin_addr, (rt_ubase_t)begin_addr + size);
+                   (rt_uintptr_t)begin_addr, (rt_uintptr_t)begin_addr + size);
 
         return RT_NULL;
     }
@@ -207,7 +207,7 @@ rt_smem_t rt_smem_init(const char    *name,
     small_mem->heap_ptr = (rt_uint8_t *)begin_align;
 
     LOG_D("mem init, heap begin address 0x%x, size %d",
-            (rt_ubase_t)small_mem->heap_ptr, small_mem->mem_size_aligned);
+            (rt_uintptr_t)small_mem->heap_ptr, small_mem->mem_size_aligned);
 
     /* initialize the start of the heap */
     mem        = (struct rt_small_mem_item *)small_mem->heap_ptr;
@@ -372,13 +372,13 @@ void *rt_smem_alloc(rt_smem_t m, rt_size_t size)
 
                 RT_ASSERT(((small_mem->lfree == small_mem->heap_end) || (!MEM_ISUSED(small_mem->lfree))));
             }
-            RT_ASSERT((rt_ubase_t)mem + SIZEOF_STRUCT_MEM + size <= (rt_ubase_t)small_mem->heap_end);
-            RT_ASSERT((rt_ubase_t)((rt_uint8_t *)mem + SIZEOF_STRUCT_MEM) % RT_ALIGN_SIZE == 0);
-            RT_ASSERT((((rt_ubase_t)mem) & (RT_ALIGN_SIZE - 1)) == 0);
+            RT_ASSERT((rt_uintptr_t)mem + SIZEOF_STRUCT_MEM + size <= (rt_uintptr_t)small_mem->heap_end);
+            RT_ASSERT((rt_uintptr_t)((rt_uint8_t *)mem + SIZEOF_STRUCT_MEM) % RT_ALIGN_SIZE == 0);
+            RT_ASSERT((((rt_uintptr_t)mem) & (RT_ALIGN_SIZE - 1)) == 0);
 
             LOG_D("allocate memory at 0x%x, size: %d",
-                    (rt_ubase_t)((rt_uint8_t *)mem + SIZEOF_STRUCT_MEM),
-                    (rt_ubase_t)(mem->next - ((rt_uint8_t *)mem - small_mem->heap_ptr)));
+                    (rt_uintptr_t)((rt_uint8_t *)mem + SIZEOF_STRUCT_MEM),
+                    (rt_uintptr_t)(mem->next - ((rt_uint8_t *)mem - small_mem->heap_ptr)));
 
             /* return the memory data except mem struct */
             return (rt_uint8_t *)mem + SIZEOF_STRUCT_MEM;
@@ -431,7 +431,7 @@ void *rt_smem_realloc(rt_smem_t m, void *rmem, rt_size_t newsize)
     if (rmem == RT_NULL)
         return rt_smem_alloc(&small_mem->parent, newsize);
 
-    RT_ASSERT((((rt_ubase_t)rmem) & (RT_ALIGN_SIZE - 1)) == 0);
+    RT_ASSERT((((rt_uintptr_t)rmem) & (RT_ALIGN_SIZE - 1)) == 0);
     RT_ASSERT((rt_uint8_t *)rmem >= (rt_uint8_t *)small_mem->heap_ptr);
     RT_ASSERT((rt_uint8_t *)rmem < (rt_uint8_t *)small_mem->heap_end);
 
@@ -502,7 +502,7 @@ void rt_smem_free(void *rmem)
     if (rmem == RT_NULL)
         return;
 
-    RT_ASSERT((((rt_ubase_t)rmem) & (RT_ALIGN_SIZE - 1)) == 0);
+    RT_ASSERT((((rt_uintptr_t)rmem) & (RT_ALIGN_SIZE - 1)) == 0);
 
     /* Get the corresponding struct rt_small_mem_item ... */
     mem = (struct rt_small_mem_item *)((rt_uint8_t *)rmem - SIZEOF_STRUCT_MEM);
@@ -517,8 +517,8 @@ void rt_smem_free(void *rmem)
     RT_ASSERT(MEM_POOL(&small_mem->heap_ptr[mem->next]) == small_mem);
 
     LOG_D("release memory 0x%x, size: %d",
-            (rt_ubase_t)rmem,
-            (rt_ubase_t)(mem->next - ((rt_uint8_t *)mem - small_mem->heap_ptr)));
+            (rt_uintptr_t)rmem,
+            (rt_uintptr_t)(mem->next - ((rt_uint8_t *)mem - small_mem->heap_ptr)));
 
     /* ... and is now unused. */
     mem->pool_ptr = MEM_FREED(small_mem);
@@ -578,7 +578,7 @@ static int memcheck(int argc, char *argv[])
         /* check mem */
         for (mem = (struct rt_small_mem_item *)m->heap_ptr; mem != m->heap_end; mem = (struct rt_small_mem_item *)&m->heap_ptr[mem->next])
         {
-            position = (rt_ubase_t)mem - (rt_ubase_t)m->heap_ptr;
+            position = (rt_uintptr_t)mem - (rt_uintptr_t)m->heap_ptr;
             if (position < 0) goto __exit;
             if (position > (int)m->mem_size_aligned) goto __exit;
             if (MEM_POOL(mem) != m) goto __exit;
diff --git a/src/memheap.c b/src/memheap.c
index 4b09fead01..edc1eb2641 100644
--- a/src/memheap.c
+++ b/src/memheap.c
@@ -40,7 +40,7 @@
 #define RT_MEMHEAP_MINIALLOC    RT_ALIGN(12, RT_ALIGN_SIZE)
 
 #define RT_MEMHEAP_SIZE         RT_ALIGN(sizeof(struct rt_memheap_item), RT_ALIGN_SIZE)
-#define MEMITEM_SIZE(item)      ((rt_ubase_t)item->next - (rt_ubase_t)item - RT_MEMHEAP_SIZE)
+#define MEMITEM_SIZE(item)      ((rt_uintptr_t)item->next - (rt_uintptr_t)item - RT_MEMHEAP_SIZE)
 #define MEMITEM(ptr)            (struct rt_memheap_item*)((rt_uint8_t*)ptr - RT_MEMHEAP_SIZE)
 
 static void _remove_next_ptr(volatile struct rt_memheap_item *next_ptr)
@@ -899,10 +899,10 @@ static int memheapcheck(int argc, char *argv[])
                 break;
             }
             /* check next and prev */
-            if (!((rt_ubase_t)item->next <= (rt_ubase_t)((rt_ubase_t)heap->start_addr + heap->pool_size) &&
-                  (rt_ubase_t)item->prev >= (rt_ubase_t)heap->start_addr) &&
-                  (rt_ubase_t)item->next == RT_ALIGN((rt_ubase_t)item->next, RT_ALIGN_SIZE) &&
-                  (rt_ubase_t)item->prev == RT_ALIGN((rt_ubase_t)item->prev, RT_ALIGN_SIZE))
+            if (!((rt_uintptr_t)item->next <= (rt_uintptr_t)((rt_uintptr_t)heap->start_addr + heap->pool_size) &&
+                  (rt_uintptr_t)item->prev >= (rt_uintptr_t)heap->start_addr) &&
+                  (rt_uintptr_t)item->next == RT_ALIGN((rt_uintptr_t)item->next, RT_ALIGN_SIZE) &&
+                  (rt_uintptr_t)item->prev == RT_ALIGN((rt_uintptr_t)item->prev, RT_ALIGN_SIZE))
             {
                 has_bad = RT_TRUE;
                 break;
diff --git a/src/scheduler_comm.c b/src/scheduler_comm.c
index 4e5495e727..957f1a132e 100644
--- a/src/scheduler_comm.c
+++ b/src/scheduler_comm.c
@@ -244,13 +244,13 @@ void rt_scheduler_stack_check(struct rt_thread *thread)
 
 #ifndef RT_USING_HW_STACK_GUARD
 #ifdef ARCH_CPU_STACK_GROWS_UPWARD
-    if (*((rt_uint8_t *)((rt_ubase_t)thread->stack_addr + thread->stack_size - 1)) != '#' ||
+    if (*((rt_uint8_t *)((rt_uintptr_t)thread->stack_addr + thread->stack_size - 1)) != '#' ||
 #else
     if (*((rt_uint8_t *)thread->stack_addr) != '#' ||
 #endif /* ARCH_CPU_STACK_GROWS_UPWARD */
-        (rt_ubase_t)thread->sp <= (rt_ubase_t)thread->stack_addr ||
-        (rt_ubase_t)thread->sp >
-        (rt_ubase_t)thread->stack_addr + (rt_ubase_t)thread->stack_size)
+        (rt_uintptr_t)thread->sp <= (rt_uintptr_t)thread->stack_addr ||
+        (rt_uintptr_t)thread->sp >
+        (rt_uintptr_t)thread->stack_addr + (rt_uintptr_t)thread->stack_size)
     {
         rt_base_t dummy = 1;
 
@@ -261,9 +261,9 @@ void rt_scheduler_stack_check(struct rt_thread *thread)
 #endif /* RT_USING_HW_STACK_GUARD */
 #ifdef ARCH_CPU_STACK_GROWS_UPWARD
 #ifndef RT_USING_HW_STACK_GUARD
-    else if ((rt_ubase_t)thread->sp > ((rt_ubase_t)thread->stack_addr + thread->stack_size))
+    else if ((rt_uintptr_t)thread->sp > ((rt_uintptr_t)thread->stack_addr + thread->stack_size))
 #else
-    if ((rt_ubase_t)thread->sp > ((rt_ubase_t)thread->stack_addr + thread->stack_size))
+    if ((rt_uintptr_t)thread->sp > ((rt_uintptr_t)thread->stack_addr + thread->stack_size))
 #endif
     {
         LOG_W("warning: %s stack is close to the top of stack address.\n",
@@ -271,9 +271,9 @@ void rt_scheduler_stack_check(struct rt_thread *thread)
     }
 #else
 #ifndef RT_USING_HW_STACK_GUARD
-    else if ((rt_ubase_t)thread->sp <= ((rt_ubase_t)thread->stack_addr + 32))
+    else if ((rt_uintptr_t)thread->sp <= ((rt_uintptr_t)thread->stack_addr + 32))
 #else
-    if ((rt_ubase_t)thread->sp <= ((rt_ubase_t)thread->stack_addr + 32))
+    if ((rt_uintptr_t)thread->sp <= ((rt_uintptr_t)thread->stack_addr + 32))
 #endif
     {
         LOG_W("warning: %s stack is close to end of stack address.\n",
diff --git a/src/scheduler_up.c b/src/scheduler_up.c
index acc8ee8c95..d65870bbf2 100644
--- a/src/scheduler_up.c
+++ b/src/scheduler_up.c
@@ -181,7 +181,7 @@ void rt_system_scheduler_start(void)
 
     /* switch to new thread */
 
-    rt_hw_context_switch_to((rt_ubase_t)&to_thread->sp);
+    rt_hw_context_switch_to((rt_uintptr_t)&to_thread->sp);
 
     /* never come back */
 }
@@ -275,8 +275,8 @@ void rt_schedule(void)
 
                     RT_OBJECT_HOOK_CALL(rt_scheduler_switch_hook, (from_thread));
 
-                    rt_hw_context_switch((rt_ubase_t)&from_thread->sp,
-                            (rt_ubase_t)&to_thread->sp);
+                    rt_hw_context_switch((rt_uintptr_t)&from_thread->sp,
+                            (rt_uintptr_t)&to_thread->sp);
 
                     /* enable interrupt */
                     rt_hw_interrupt_enable(level);
@@ -306,8 +306,8 @@ void rt_schedule(void)
                 {
                     LOG_D("switch in interrupt");
 
-                    rt_hw_context_switch_interrupt((rt_ubase_t)&from_thread->sp,
-                            (rt_ubase_t)&to_thread->sp, from_thread, to_thread);
+                    rt_hw_context_switch_interrupt((rt_uintptr_t)&from_thread->sp,
+                            (rt_uintptr_t)&to_thread->sp, from_thread, to_thread);
                 }
             }
             else
diff --git a/src/signal.c b/src/signal.c
index 552d2a89cd..ace2dd1f4c 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -72,9 +72,9 @@ static void _signal_entry(void *parameter)
     RT_SCHED_CTX(tid).stat &= ~RT_THREAD_STAT_SIGNAL;
 
 #ifdef RT_USING_SMP
-    rt_hw_context_switch_to((rt_base_t)&parameter, tid);
+    rt_hw_context_switch_to((rt_uintptr_t)&parameter, tid);
 #else
-    rt_hw_context_switch_to((rt_ubase_t)&(tid->sp));
+    rt_hw_context_switch_to((rt_uintptr_t)&(tid->sp));
 #endif /* RT_USING_SMP */
 }
 
diff --git a/src/slab.c b/src/slab.c
index b1e2971b2e..456f0ec648 100644
--- a/src/slab.c
+++ b/src/slab.c
@@ -136,7 +136,7 @@
 #define PAGE_TYPE_LARGE     0x02
 
 #define btokup(addr)    \
-    (&slab->memusage[((rt_ubase_t)(addr) - slab->heap_start) >> RT_MM_PAGE_BITS])
+    (&slab->memusage[((rt_uintptr_t)(addr) - slab->heap_start) >> RT_MM_PAGE_BITS])
 
 /**
  * Base structure of slab memory object
@@ -194,8 +194,8 @@ struct rt_slab_page
 struct rt_slab
 {
     struct rt_memory            parent;                         /**< inherit from rt_memory */
-    rt_ubase_t                  heap_start;                     /**< memory start address */
-    rt_ubase_t                  heap_end;                       /**< memory end address */
+    rt_uintptr_t                heap_start;                     /**< memory start address */
+    rt_uintptr_t                heap_end;                       /**< memory end address */
     struct rt_slab_memusage    *memusage;
     struct rt_slab_zone        *zone_array[RT_SLAB_NZONES];     /* linked list of zones NFree > 0 */
     struct rt_slab_zone        *zone_free;                      /* whole zones that have become free */
@@ -261,7 +261,7 @@ void rt_slab_page_free(rt_slab_t m, void *addr, rt_size_t npages)
     struct rt_slab *slab = (struct rt_slab *)m;
 
     RT_ASSERT(addr != RT_NULL);
-    RT_ASSERT((rt_ubase_t)addr % RT_MM_PAGE_SIZE == 0);
+    RT_ASSERT((rt_uintptr_t)addr % RT_MM_PAGE_SIZE == 0);
     RT_ASSERT(npages != 0);
 
     n = (struct rt_slab_page *)addr;
@@ -324,18 +324,18 @@ static void rt_slab_page_init(struct rt_slab *slab, void *addr, rt_size_t npages
 rt_slab_t rt_slab_init(const char *name, void *begin_addr, rt_size_t size)
 {
     rt_uint32_t limsize, npages;
-    rt_ubase_t start_addr, begin_align, end_align;
+    rt_uintptr_t start_addr, begin_align, end_align;
     struct rt_slab *slab;
 
-    slab = (struct rt_slab *)RT_ALIGN((rt_ubase_t)begin_addr, RT_ALIGN_SIZE);
-    start_addr = (rt_ubase_t)slab + sizeof(*slab);
+    slab = (struct rt_slab *)RT_ALIGN((rt_uintptr_t)begin_addr, RT_ALIGN_SIZE);
+    start_addr = (rt_uintptr_t)slab + sizeof(*slab);
     /* align begin and end addr to page */
-    begin_align = RT_ALIGN((rt_ubase_t)start_addr, RT_MM_PAGE_SIZE);
-    end_align   = RT_ALIGN_DOWN((rt_ubase_t)begin_addr + size, RT_MM_PAGE_SIZE);
+    begin_align = RT_ALIGN((rt_uintptr_t)start_addr, RT_MM_PAGE_SIZE);
+    end_align   = RT_ALIGN_DOWN((rt_uintptr_t)begin_addr + size, RT_MM_PAGE_SIZE);
     if (begin_align >= end_align)
     {
         rt_kprintf("slab init errr. wrong address[0x%x - 0x%x]\n",
-                   (rt_ubase_t)begin_addr, (rt_ubase_t)begin_addr + size);
+                   (rt_uintptr_t)begin_addr, (rt_uintptr_t)begin_addr + size);
         return RT_NULL;
     }
 
@@ -378,7 +378,7 @@ rt_slab_t rt_slab_init(const char *name, void *begin_addr, rt_size_t size)
     slab->memusage = rt_slab_page_alloc((rt_slab_t)(&slab->parent), limsize / RT_MM_PAGE_SIZE);
 
     LOG_D("slab->memusage 0x%x, size 0x%x",
-          (rt_ubase_t)slab->memusage, limsize);
+          (rt_uintptr_t)slab->memusage, limsize);
     return &slab->parent;
 }
 RTM_EXPORT(rt_slab_init);
@@ -411,7 +411,7 @@ RTM_EXPORT(rt_slab_detach);
 rt_inline int zoneindex(rt_size_t *bytes)
 {
     /* unsigned for shift opt */
-    rt_ubase_t n = (rt_ubase_t)(*bytes);
+    rt_uintptr_t n = (rt_uintptr_t)(*bytes);
 
     if (n < 128)
     {
@@ -519,7 +519,7 @@ void *rt_slab_alloc(rt_slab_t m, rt_size_t size)
         LOG_D("alloc a large memory 0x%x, page cnt %d, kup %d",
               size,
               size >> RT_MM_PAGE_BITS,
-              ((rt_ubase_t)chunk - slab->heap_start) >> RT_MM_PAGE_BITS);
+              ((rt_uintptr_t)chunk - slab->heap_start) >> RT_MM_PAGE_BITS);
         /* mem stat */
         slab->parent.used += size;
         if (slab->parent.used > slab->parent.max)
@@ -605,7 +605,7 @@ void *rt_slab_alloc(rt_slab_t m, rt_size_t size)
             }
 
             LOG_D("alloc a new zone: 0x%x",
-                  (rt_ubase_t)z);
+                  (rt_uintptr_t)z);
 
             /* set message usage */
             for (off = 0, kup = btokup(z); off < slab->zone_page_cnt; off ++)
@@ -686,7 +686,7 @@ void *rt_slab_realloc(rt_slab_t m, void *ptr, rt_size_t size)
      * Get the original allocation's zone.  If the new request winds up
      * using the same chunk size we do not have to do anything.
      */
-    kup = btokup((rt_ubase_t)ptr & ~RT_MM_PAGE_MASK);
+    kup = btokup((rt_uintptr_t)ptr & ~RT_MM_PAGE_MASK);
     if (kup->type == PAGE_TYPE_LARGE)
     {
         rt_size_t osize;
@@ -701,7 +701,7 @@ void *rt_slab_realloc(rt_slab_t m, void *ptr, rt_size_t size)
     }
     else if (kup->type == PAGE_TYPE_SMALL)
     {
-        z = (struct rt_slab_zone *)(((rt_ubase_t)ptr & ~RT_MM_PAGE_MASK) -
+        z = (struct rt_slab_zone *)(((rt_uintptr_t)ptr & ~RT_MM_PAGE_MASK) -
                           kup->size * RT_MM_PAGE_SIZE);
         RT_ASSERT(z->z_magic == ZALLOC_SLAB_MAGIC);
 
@@ -749,19 +749,19 @@ void rt_slab_free(rt_slab_t m, void *ptr)
     /* get memory usage */
 #if (DBG_LVL == DBG_LOG)
     {
-        rt_ubase_t addr = ((rt_ubase_t)ptr & ~RT_MM_PAGE_MASK);
+        rt_uintptr_t addr = ((rt_uintptr_t)ptr & ~RT_MM_PAGE_MASK);
         LOG_D("free a memory 0x%x and align to 0x%x, kup index %d",
-              (rt_ubase_t)ptr,
-              (rt_ubase_t)addr,
-              ((rt_ubase_t)(addr) - slab->heap_start) >> RT_MM_PAGE_BITS);
+              (rt_uintptr_t)ptr,
+              (rt_uintptr_t)addr,
+              ((rt_uintptr_t)(addr) - slab->heap_start) >> RT_MM_PAGE_BITS);
     }
 #endif /* DBG_LVL == DBG_LOG */
 
-    kup = btokup((rt_ubase_t)ptr & ~RT_MM_PAGE_MASK);
+    kup = btokup((rt_uintptr_t)ptr & ~RT_MM_PAGE_MASK);
     /* release large allocation */
     if (kup->type == PAGE_TYPE_LARGE)
     {
-        rt_ubase_t size;
+        rt_uintptr_t size;
 
         /* clear page counter */
         size = kup->size;
@@ -770,7 +770,7 @@ void rt_slab_free(rt_slab_t m, void *ptr)
         slab->parent.used -= size * RT_MM_PAGE_SIZE;
 
         LOG_D("free large memory block 0x%x, page count %d",
-              (rt_ubase_t)ptr, size);
+              (rt_uintptr_t)ptr, size);
 
         /* free this page */
         rt_slab_page_free(m, ptr, size);
@@ -779,7 +779,7 @@ void rt_slab_free(rt_slab_t m, void *ptr)
     }
 
     /* zone case. get out zone. */
-    z = (struct rt_slab_zone *)(((rt_ubase_t)ptr & ~RT_MM_PAGE_MASK) -
+    z = (struct rt_slab_zone *)(((rt_uintptr_t)ptr & ~RT_MM_PAGE_MASK) -
                       kup->size * RT_MM_PAGE_SIZE);
     RT_ASSERT(z->z_magic == ZALLOC_SLAB_MAGIC);
 
@@ -811,7 +811,7 @@ void rt_slab_free(rt_slab_t m, void *ptr)
         struct rt_slab_zone **pz;
 
         LOG_D("free zone %#x, zoneindex %d",
-              (rt_ubase_t)z, z->z_zoneindex);
+              (rt_uintptr_t)z, z->z_zoneindex);
 
         /* remove zone from zone array list */
         for (pz = &slab->zone_array[z->z_zoneindex]; z != *pz; pz = &(*pz)->z_next)