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[libcpu] discard rt_current_thread (#8976)

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* [libcpu] rv64: discard rt_current_thread

* arm: using rt_thread_self to fetch current TCB
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Shell
2024-05-26 22:00:17 +08:00
committed by GitHub
parent 1a1514640a
commit 397cdcd132
5 changed files with 14 additions and 21 deletions
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9
components/lwp/arch/risc-v/rv64/lwp_gcc.S
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@@ -35,7 +35,7 @@ arch_start_umode:
// load kstack for user process
csrw sscratch, a3
li t0, SSTATUS_SPP | SSTATUS_SIE // set as user mode, close interrupt
csrc sstatus, t0
csrc sstatus, t0
li t0, SSTATUS_SPIE // enable interrupt when return to user mode
csrs sstatus, t0
@@ -112,7 +112,7 @@ arch_signal_quit:
mv sp, a0
/* restore user sp before enter trap */
addi a0, sp, CTX_REG_NR * REGBYTES
addi a0, sp, CTX_REG_NR * REGBYTES
csrw sscratch, a0
@@ -234,8 +234,7 @@ __restore_sp_from_sscratch: // from kernel
j __move_stack_context
__restore_sp_from_tcb: // from user
la a0, rt_current_thread
LOAD a0, 0(a0)
jal rt_thread_self
jal get_thread_kernel_stack_top
mv t0, a0
@@ -272,7 +271,7 @@ copy_context_loop:
call syscall_handler
j arch_syscall_exit
START_POINT_END(syscall_entry)
.global arch_syscall_exit
arch_syscall_exit:
CLOSE_INTERRUPT