From 018624dd5b1692b88f7b2e85652ea7b898043b6d Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Tue, 24 May 2022 23:28:37 +0300
Subject: make process loading more generic

---
 include/apos/conf.h        |  2 +-
 include/apos/mem_regions.h |  1 -
 include/apos/proc.h        |  4 ++--
 include/apos/tcb.h         |  8 +++-----
 include/arch/proc.h        | 20 ++++++++++++++++++++
 include/arch/vmem.h        |  1 +
 6 files changed, 27 insertions(+), 9 deletions(-)
 create mode 100644 include/arch/proc.h

(limited to 'include')

diff --git a/include/apos/conf.h b/include/apos/conf.h
index 2b861dc..c2653cd 100644
--- a/include/apos/conf.h
+++ b/include/apos/conf.h
@@ -9,7 +9,7 @@
 
 #include <apos/types.h>
 
-extern size_t __proc_stack_size;
+extern size_t __thread_stack_size;
 extern size_t __call_stack_size;
 
 #endif /* APOS_CONF_H */
diff --git a/include/apos/mem_regions.h b/include/apos/mem_regions.h
index c9c4a5c..54e4e2b 100644
--- a/include/apos/mem_regions.h
+++ b/include/apos/mem_regions.h
@@ -21,7 +21,6 @@
 struct mem_region_root {
 	struct sp_root free_regions;
 	struct sp_root used_regions;
-	struct mem_region *first;
 };
 
 struct mem_region {
diff --git a/include/apos/proc.h b/include/apos/proc.h
index 6b4044d..182ae16 100644
--- a/include/apos/proc.h
+++ b/include/apos/proc.h
@@ -10,7 +10,7 @@
 #include <apos/tcb.h>
 #include <apos/vmem.h>
 
-stat_t jump_to_userspace(struct tcb *t, int argc, char **argv);
-stat_t init_proc(void *fdt, struct vmem *b);
+stat_t prepare_proc(struct tcb *t, vm_t bin, vm_t interp);
+stat_t init_proc(void *fdt);
 
 #endif /* APOS_PROC_H */
diff --git a/include/apos/tcb.h b/include/apos/tcb.h
index 572041d..2b602f6 100644
--- a/include/apos/tcb.h
+++ b/include/apos/tcb.h
@@ -32,15 +32,12 @@ struct tcb {
 
 	vm_t callback;
 
-	vm_t proc_stack;
-	vm_t proc_stack_top;
+	vm_t thread_stack;
+	vm_t thread_stack_top;
 
 	vm_t call_stack;
 	vm_t call_stack_top;
 
-	/* entry point */
-	vm_t entry;
-
 	/* vm root branch */
 	struct vmem *b_r;
 
@@ -63,5 +60,6 @@ void use_tcb(struct tcb *);
 struct tcb *get_tcb(id_t tid);
 
 stat_t clone_tcb_maps(struct tcb *);
+stat_t alloc_stacks(struct tcb *);
 
 #endif /* APOS_TCB_H */
diff --git a/include/arch/proc.h b/include/arch/proc.h
new file mode 100644
index 0000000..1dcb0af
--- /dev/null
+++ b/include/arch/proc.h
@@ -0,0 +1,20 @@
+#ifndef APOS_ARCH_PROC_H
+#define APOS_ARCH_PROC_H
+
+/**
+ * @file proc.h
+ * Arch-specific process related stuff.
+ */
+
+#if defined(riscv64)
+#include "../../arch/riscv64/include/proc.h"
+#elif defined(riscv32)
+#include "../../arch/riscv32/include/proc.h"
+#endif
+
+stat_t set_return(vm_t r);
+/*TODO: should this be in arch/tcb.h or something? */
+stat_t prepare_thread(struct tcb *t);
+stat_t run_init(struct tcb *t, void *fdt);
+
+#endif /* APOS_ARCH_PROC_H */
diff --git a/include/arch/vmem.h b/include/arch/vmem.h
index 29dab99..b39d905 100644
--- a/include/arch/vmem.h
+++ b/include/arch/vmem.h
@@ -33,6 +33,7 @@ vm_t setup_kernel_io(struct vmem *b, vm_t paddr);
 #endif
 
 struct vmem *create_vmem();
+stat_t use_vmem(struct vmem *);
 stat_t destroy_vmem(struct vmem *);
 stat_t clone_uvmem(struct vmem *, struct vmem *);
 
-- 
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