OpenE2K
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qemu-e2k
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e2k: Panic if it was not possible to copy CR to a new thread. 

Signed-off-by: Denis Drakhnya <numas13@gmail.com>
This commit is contained in:
Denis Drakhnia 2021-02-14 08:45:08 +02:00 committed by Denis Drakhnia
parent 47c93f9dec
commit 9e87995802
1 changed files with 8 additions and 3 deletions
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11
linux-user/e2k/target_cpu.h
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@ -20,7 +20,7 @@ static inline void cpu_clone_regs_child(CPUE2KState *env, target_ulong newsp,
if (flags & CLONE_VM) {
E2KPcsState pcs = { 0 };
E2KPsState ps = { 0 };
E2KCrs crs;
E2KCrs crs = { 0 };
uint64_t *ps_old, *ps_new;
size_t frame_size;
target_ulong pcsp = env->pcsp.base + env->pcsp.index;
@ -35,8 +35,13 @@ static inline void cpu_clone_regs_child(CPUE2KState *env, target_ulong newsp,
// TODO: set a chain info to return to kernel
pcs.index += sizeof(E2KCrs);
e2k_copy_from_user_crs(&crs, pcsp);
e2k_copy_to_user_crs(pcs.base + pcs.index, &crs);
if (e2k_copy_from_user_crs(&crs, pcsp)
|| e2k_copy_to_user_crs(pcs.base + pcs.index, &crs))
{
qemu_log("qemu-e2k internal error: failed to copy parent frame\n");
env->ip = 0;
return;
}
frame_size = crs.cr1.wbs * (crs.cr1.wfx ? 32 : 16);
ps_base -= frame_size;