diff options
Diffstat (limited to 'include/arch')
| -rw-r--r-- | include/arch/proc.h | 7 | ||||
| -rw-r--r-- | include/arch/tcb.h | 6 | ||||
| -rw-r--r-- | include/arch/vmem.h | 12 |
3 files changed, 24 insertions, 1 deletions
diff --git a/include/arch/proc.h b/include/arch/proc.h index 7921e5c..b0f0944 100644 --- a/include/arch/proc.h +++ b/include/arch/proc.h @@ -127,6 +127,13 @@ __noreturn void run_init(struct tcb *t, vm_t fdt, vm_t initrd); * so I'm not too worried. */ __noreturn void ret_userspace_fast(); + +/** + * Return to userspace, restoring some registers. + * Mainly for returning from an ipc_resp, where the user is expected to save + * temporary registers on their own. + * Same as with \ref ret_userspace_fast(), skips canary checking. + */ __noreturn void ret_userspace_partial(); #endif /* KMI_ARCH_PROC_H */ diff --git a/include/arch/tcb.h b/include/arch/tcb.h index 8eddb07..18386d3 100644 --- a/include/arch/tcb.h +++ b/include/arch/tcb.h @@ -42,6 +42,12 @@ stat_t setup_rpc_stack(struct tcb *t); */ void destroy_rpc_stack(struct tcb *t); +/** + * Copy over contents in rpc stack from \p t to \p c. + * + * @param t 'Source'. + * @param c 'Destination'- + */ void copy_rpc_stack(struct tcb *t, struct tcb *c); /** diff --git a/include/arch/vmem.h b/include/arch/vmem.h index 0f06cc5..ad32519 100644 --- a/include/arch/vmem.h +++ b/include/arch/vmem.h @@ -167,11 +167,21 @@ struct vmem *create_vmem(); void use_vmem(struct vmem *b); /** - * Destroy virtual memory space. + * Completely destroy virtual memory space. + * Should only be called for ->proc.vmem, as it is the only one that is sure to + * own all nodes. * * @param b Virtual memory to destroy. */ void destroy_vmem(struct vmem *b); + +/** + * Destroy 'regular' virtual memory space. + * Should be called for ->rpc.vmem, as rpc can have some references that it + * doesn't own into ->proc.vmem, and this function is careful not to free those. + * + * @param b Virtual memory to destroy. + */ void destroy_rpcmem(struct vmem *b); /** |