Fix RV64 context_restore bug when F/D extension is enabled

Signed-off-by: Jim Huang <jserv@ccns.ncku.edu.tw>

Author: Jer6y

ports/risc-v64/gnu/src/tx_thread_context_restore.S

@@ -150,7 +150,7 @@ _tx_thread_context_restore:
     csrw    mepc, t0                                    // Setup mepc
     li      t0, 0x1880                                  // Prepare MPIP
 #if defined(__riscv_float_abi_single) || defined(__riscv_float_abi_double)
-    li      t1, 1<<13
+    li      t1, 1 << 13
     or      t0, t1, t0
 #endif
     csrw    mstatus, t0                                 // Enable MPIP
@@ -264,8 +264,8 @@ _tx_thread_no_preempt_restore:
     csrw    mepc, t0                                    // Setup mepc
     li      t0, 0x1880                                  // Prepare MPIP
 #if defined(__riscv_float_abi_single) || defined(__riscv_float_abi_double)
-    li      t1, 1<<13
-    or      t0, t1, t0     
+    li      t1, 1 << 13
+    or      t0, t1, t0
 #endif
     csrw    mstatus, t0                                 // Enable MPIP
 

ports/risc-v64/gnu/src/tx_thread_schedule.S

@@ -202,7 +202,7 @@ _tx_thread_schedule_loop:
     csrw    mepc, t0                                    // Store mepc
     li      t0, 0x1880                                  // Prepare MPIP
 #if defined(__riscv_float_abi_single) || defined(__riscv_float_abi_double)
-    li      t1, 1<<13
+    li      t1, 1 << 13
     or      t0, t1, t0
 #endif
     csrw    mstatus, t0                                 // Enable MPIP