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Fix TLS alignment issues, works on BOCHS now too!
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This commit is contained in:
Kamil Kowalczyk
2026-01-29 18:18:24 +01:00
parent 73e42588fb
commit d2f5c032d9
4 changed files with 29 additions and 26 deletions
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13
kernel/amd64/proc.c
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@@ -109,22 +109,25 @@ void proc_cleanup (struct proc* proc) {
void proc_init_tls (struct proc* proc) {
struct limine_hhdm_response* hhdm = limine_hhdm_request.response;
if (proc->procgroup->tls.tls_tmpl == NULL)
return;
size_t tls_size = proc->procgroup->tls.tls_tmpl_size;
size_t pages = proc->procgroup->tls.tls_tmpl_pages;
uintptr_t tls_paddr;
uint32_t flags = MM_PG_USER | MM_PG_PRESENT | MM_PG_RW;
uintptr_t tls_vaddr =
procgroup_map (proc->procgroup, 0, proc->procgroup->tls.tls_tmpl_pages, flags, &tls_paddr);
uintptr_t tls_vaddr = procgroup_map (proc->procgroup, 0, pages, flags, &tls_paddr);
uintptr_t k_tls_addr = (uintptr_t)hhdm->offset + tls_paddr;
memset ((void*)k_tls_addr, 0, pages * PAGE_SIZE);
memcpy ((void*)k_tls_addr, (void*)proc->procgroup->tls.tls_tmpl, tls_size);
uintptr_t ktcb = k_tls_addr + tls_size;
uintptr_t utcb = tls_vaddr + tls_size;
memset ((void*)k_tls_addr, 0, tls_size);
memcpy ((void*)k_tls_addr, (void*)proc->procgroup->tls.tls_tmpl, tls_size);
*(uintptr_t*)ktcb = utcb;
proc->pdata.fs_base = utcb;