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This commit is contained in:
Murphy 2025-03-28 10:06:08 -04:00
parent 44694ba949
commit 4bf4659392
Signed by: freya
GPG key ID: 9FBC6FFD6D2DBF17
1 changed files with 23 additions and 1 deletions

24
kernel/user.c
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@ -431,6 +431,11 @@ static int read_phdrs(elfhdr_t *hdr, pcb_t *pcb)
*/
static context_t *stack_setup(pcb_t *pcb, uint32_t entry, const char **args)
{
#if TRACING_USER
cio_printf("stksetup: pcb %08x, entry %08, args %08x\n", (uint32_t)pcb,
entry, (uint32_t)args);
#endif
/*
** First, we need to count the space we'll need for the argument
** vector and strings.
@ -653,7 +658,7 @@ void user_init(void)
// This is gross, but we need to get this information somehow.
// Access the "user blob" data in the second bootstrap sector
uint16_t *blobdata = (uint16_t *)USER_BLOB_DATA;
uint16_t *blobdata = (uint16_t *)P2V(USER_BLOB_DATA);
user_offset = *blobdata++;
user_segment = *blobdata++;
user_sectors = *blobdata++;
@ -698,6 +703,10 @@ void user_init(void)
*/
prog_t *user_locate(uint_t what)
{
#if TRACING_USER
cio_printf("ulocate: %u\n", what);
#endif
// no programs if there is no blob!
if (user_header == NULL) {
return NULL;
@ -733,6 +742,10 @@ prog_t *user_locate(uint_t what)
*/
int user_duplicate(pcb_t *new, pcb_t *old)
{
#if TRACING_USER
cio_printf("udup: old %08x new %08x\n", (uint32_t)old, (uint32_t)new);
#endif
// We need to do a recursive duplication of the process address
// space of the current process. First, we create a new user
// page directory. Next, we'll duplicate the USER_PDE page
@ -806,6 +819,11 @@ int user_load(prog_t *ptab, pcb_t *pcb, const char **args)
assert1(pcb != NULL);
assert1(args != NULL);
#if TRACING_USER
cio_printf("uload: prog '%s' pcb %08x args %08x\n",
ptab->name[0] ? ptab->name : "?", (uint32_t)pcb, (uint32_t)args);
#endif
// locate the ELF binary
elfhdr_t *hdr = (elfhdr_t *)((uint32_t)user_header + ptab->offset);
@ -864,6 +882,10 @@ int user_load(prog_t *ptab, pcb_t *pcb, const char **args)
*/
void user_cleanup(pcb_t *pcb)
{
#if TRACING_USER
cio_printf("uclean: %08x\n", (uint32_t)pcb);
#endif
if (pcb == NULL) {
// should this be an error?
return;