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sim: fix vfork report error #8497

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Merged
xiaoxiang781216 merged 1 commit into from
Feb 11, 2023
Merged

sim: fix vfork report error #8497

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10 changes: 9 additions & 1 deletion arch/sim/src/sim/sim_vfork.c
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@
#include <errno.h>
#include <debug.h>

#include <nuttx/compiler.h>
#include <nuttx/sched.h>
#include <nuttx/arch.h>
#include <arch/irq.h>
Expand Down Expand Up @@ -82,10 +83,15 @@
*
****************************************************************************/

#ifdef CONFIG_SIM_ASAN
nosanitize_address
#endif
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pid_t up_vfork(const xcpt_reg_t *context)
{
struct tcb_s *parent = this_task();
struct task_tcb_s *child;
unsigned char *pout;
unsigned char *pin;
xcpt_reg_t newsp;
xcpt_reg_t newfp;
xcpt_reg_t newtop;
Expand Down Expand Up @@ -130,7 +136,9 @@ pid_t up_vfork(const xcpt_reg_t *context)
newtop = (xcpt_reg_t)child->cmn.stack_base_ptr +
child->cmn.adj_stack_size;
newsp = newtop - stackutil;
memcpy((void *)newsp, (const void *)context[JB_SP], stackutil);
pout = (unsigned char *)newsp;
pin = (unsigned char *)context[JB_SP];
while (stackutil-- > 0) *pout++ = *pin++;

/* Was there a frame pointer in place before? */

Expand Down