hujun260 commented on code in PR #14596:
URL: https://github.com/apache/nuttx/pull/14596#discussion_r1827130639
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arch/arm/src/arm/arm_syscall.c:
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@@ -118,11 +122,6 @@ uint32_t *arm_syscall(uint32_t *regs)
*/
case SYS_switch_context:
- {
- DEBUGASSERT(regs[REG_R1] != 0 && regs[REG_R2] != 0);
Review Comment:
In some arch, empty implementations are acceptable.
The line *(uint32_t **)regs[REG_R1] = regs; is intended to save the context,
which can also be achieved through (*running_task)->xcp.regs = regs;
The line up_set_current_regs((uint32_t *)regs[REG_R2]); sets the context to
be returned to, which can be directly using tcb->xcp.regs.
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