diff options
| author | Ian Moffett <ian@osmora.org> | 2025-10-15 22:07:13 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-10-15 22:07:13 -0400 |
| commit | 71518294bb57d3d9c8252704b21a549d58bd8f46 (patch) | |
| tree | e6775041634032848bed51e9f37b37de04877e39 /src/sys | |
| parent | 750a12a404e472b9c2bffb0404dc153fa1a23a91 (diff) | |
Ensure that the trapframe in the PCB is the latest, upon kernel entry we
copy it so it isn't stale.
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'src/sys')
| -rw-r--r-- | src/sys/arch/amd64/cpu/trap.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/sys/arch/amd64/cpu/trap.c b/src/sys/arch/amd64/cpu/trap.c index 921a036..ae3a0cc 100644 --- a/src/sys/arch/amd64/cpu/trap.c +++ b/src/sys/arch/amd64/cpu/trap.c @@ -39,6 +39,7 @@ #include <sys/syslog.h> #include <sys/syscall.h> #include <machine/trap.h> +#include <string.h> /* * Trap type to type string conversion table @@ -154,6 +155,7 @@ trap_syscall(struct trapframe *tf) struct syscall_domain *scdp; struct syscall_win *scwp; struct proc *self; + struct md_pcb *pcbp; struct syscall_args scargs = { .arg[0] = tf->rdi, .arg[1] = tf->rsi, @@ -179,6 +181,9 @@ trap_syscall(struct trapframe *tf) return; } + pcbp = &self->pcb; + memcpy(&pcbp->tf, tf, sizeof(pcbp->tf)); + if (tf->rax < scwp->nimpl && tf->rax > 0) { tf->rax = scwp->sctab[tf->rax](&scargs); } |