From c84e5b55e407c8e7f15f42119cda27e46ae4d91f Mon Sep 17 00:00:00 2001
From: d0p1 <contact@d0p1.eu>
Date: Sun, 18 Aug 2024 14:19:28 +0200
Subject: [PATCH] chore: sync repo
---
include/elf.h | 15 +++++++++++++++
kernel/proc.inc | 15 +++++++++++++++
kernel/sched.inc | 5 +++++
kernel/sys/process.inc | 19 ++++++++++++++++---
4 files changed, 51 insertions(+), 3 deletions(-)
create mode 100644 kernel/sched.inc
diff --git a/include/elf.h b/include/elf.h
index a948a16..bce1a7e 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -3,6 +3,21 @@
# include <stdint.h>
+# define ELF_MAG0 0x7F
+# define ELF_MAG1 0x45
+# define ELF_MAG2 0x4C
+# define ELF_MAG3 0x46
+
+# define EI_NIDENT 16
+
+struct elf_header
+{
+ uint8_t e_ident[EI_NIDENT];
+ uint16_t e_type;
+ uint16_t e_machine;
+ uint32_t e_version;
+};
+
/* TODO */
#endif /* !ELF_H */
diff --git a/kernel/proc.inc b/kernel/proc.inc
index 9e92912..38f91d4 100644
--- a/kernel/proc.inc
+++ b/kernel/proc.inc
@@ -32,6 +32,21 @@ proc_alloc:
pop eax
ret
+context_switch:
+ mov ax, 0x23
+ mov ds, ax
+ mov es, ax
+ mov fs, ax
+ mov gs, ax
+
+ mov eax, esp
+ push 0x23
+ push eax
+ pushf
+ push 0x1b
+ ; push addr
+ iret
+
uNextpid dd 1
uProcLock dd 0
pCurrentProc dd 0
diff --git a/kernel/sched.inc b/kernel/sched.inc
new file mode 100644
index 0000000..6e4dc20
--- /dev/null
+++ b/kernel/sched.inc
@@ -0,0 +1,5 @@
+ ;; File: shed.inc
+
+ ;; Function: schedule
+schedule:
+ ret
diff --git a/kernel/sys/process.inc b/kernel/sys/process.inc
index 89394a6..f273846 100644
--- a/kernel/sys/process.inc
+++ b/kernel/sys/process.inc
@@ -1,9 +1,22 @@
struc Context {
- .edi dd ?
- .esi dd ?
+ .gs dw ?
+ .fs dw ?
+ .es dw ?
+ .ds dw ?
+ .ss dw ?
+
+ .eax dd ?
.ebx dd ?
+ .ecx dd ?
+ .edx dd ?
+ .esi dd ?
+ .edi dd ?
.ebp dd ?
- .eip dd ?
+
+ .error dd ?
+ .eip dd ?
+ .cs dd ?
+ .eflags dd ?
}
DEFN Context