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-rw-r--r--src/stem/Makefile2
-rw-r--r--src/stem/stem.map267
-rw-r--r--src/stem/task/idt.c9
-rw-r--r--src/stem/task/idt_.asm12
-rw-r--r--src/stem/task/syscall.c16
-rw-r--r--src/stem/task/syscall.h9
6 files changed, 186 insertions, 129 deletions
diff --git a/src/stem/Makefile b/src/stem/Makefile
index db9ba9f..c72f06b 100644
--- a/src/stem/Makefile
+++ b/src/stem/Makefile
@@ -10,7 +10,7 @@ AFLAGS = -f elf
OBJECTS = core/loader_.o core/kmain.o core/sys.o \
core/monitor.o task/timer.o \
- task/idt.o task/idt_.o task/task.o task/task_.o\
+ task/idt.o task/idt_.o task/task.o task/task_.o task/syscall.o \
lib/stdlib.o lib/bitset.o \
mem/mem.o mem/paging.o mem/gdt.o mem/heap.o
OUT = stem.elf
diff --git a/src/stem/stem.map b/src/stem/stem.map
index 46fc7b6..dca785f 100644
--- a/src/stem/stem.map
+++ b/src/stem/stem.map
@@ -23,7 +23,7 @@ Linker script and memory map
0x00100000 loader
0xe010003a . = (. + 0xe0000000)
-.text 0xe0100040 0x2928 load address 0x00100040
+.text 0xe0100040 0x29b0 load address 0x00100040
*(.text)
.text 0xe0100040 0x25 core/loader_.o
*fill* 0xe0100065 0x3 00
@@ -51,114 +51,118 @@ Linker script and memory map
0xe0100590 timer_uptime
0xe010059a timer_time
0xe01005d1 timer_init
- .text 0xe010065c 0x9bb task/idt.o
+ .text 0xe010065c 0x9fa task/idt.o
0xe010065c idt_isrHandler
0xe01006f4 idt_irqHandler
- 0xe01007fc idt_init
- 0xe0101005 idt_handleIrq
- *fill* 0xe0101017 0x9 00
- .text 0xe0101020 0x259 task/idt_.o
- 0xe0101020 gdt_flush
- 0xe010103d idt_flush
- 0xe01010a5 isr0
- 0xe01010af isr1
- 0xe01010b9 isr2
- 0xe01010c3 isr3
- 0xe01010cd isr4
- 0xe01010d7 isr5
- 0xe01010e1 isr6
- 0xe01010eb isr7
- 0xe01010f5 isr8
- 0xe01010fd isr9
- 0xe0101107 isr10
- 0xe010110f isr11
- 0xe0101117 isr12
- 0xe010111f isr13
- 0xe0101127 isr14
- 0xe010112f isr15
- 0xe0101139 isr16
- 0xe0101143 isr17
- 0xe010114d isr18
- 0xe0101157 isr19
- 0xe0101161 isr20
- 0xe010116b isr21
- 0xe0101175 isr22
- 0xe010117f isr23
- 0xe0101189 isr24
- 0xe0101193 isr25
- 0xe010119d isr26
- 0xe01011a7 isr27
- 0xe01011b1 isr28
- 0xe01011bb isr29
- 0xe01011c5 isr30
- 0xe01011cf isr31
- 0xe01011d9 irq0
- 0xe01011e3 irq1
- 0xe01011ed irq2
- 0xe01011f7 irq3
- 0xe0101201 irq4
- 0xe010120b irq5
- 0xe0101215 irq6
- 0xe010121f irq7
- 0xe0101229 irq8
- 0xe0101233 irq9
- 0xe010123d irq10
- 0xe0101247 irq11
- 0xe0101251 irq12
- 0xe010125b irq13
- 0xe0101265 irq14
- 0xe010126f irq15
- *fill* 0xe0101279 0x3 00
- .text 0xe010127c 0x2e8 task/task.o
- 0xe010127c tasking_init
- 0xe010136f tasking_switch
- 0xe0101401 tasking_handleException
- 0xe0101481 thread_new
- *fill* 0xe0101564 0xc 00
- .text 0xe0101570 0xa task/task_.o
- 0xe0101570 read_eip
- 0xe0101573 task_idle
- *fill* 0xe010157a 0x2 00
- .text 0xe010157c 0xca lib/stdlib.o
- 0xe010157c memcpy
- 0xe01015b9 memset
- 0xe01015e8 memsetw
- 0xe010161e strlen
- *fill* 0xe0101646 0x2 00
- .text 0xe0101648 0x173 lib/bitset.o
- 0xe0101648 bitset_set
- 0xe010169c bitset_clear
- 0xe01016f2 bitset_test
- 0xe0101734 bitset_firstFree
- *fill* 0xe01017bb 0x1 00
- .text 0xe01017bc 0x29f mem/mem.o
- 0xe0101922 kmalloc_page
- 0xe0101969 kfree_page
- 0xe01019a4 kheap_init
- 0xe01019f9 kmalloc
- 0xe0101a37 kfree
- *fill* 0xe0101a5b 0x1 00
- .text 0xe0101a5c 0x513 mem/paging.o
- 0xe0101a5c frame_alloc
- 0xe0101a89 frame_free
- 0xe0101aa4 paging_init
- 0xe0101c3c paging_cleanup
- 0xe0101c97 pagedir_switch
- 0xe0101cc6 paging_fault
- 0xe0101da1 pagedir_getPage
- 0xe0101e80 page_map
- 0xe0101f08 page_unmap
- 0xe0101f2b page_unmapFree
- *fill* 0xe0101f6f 0x1 00
- .text 0xe0101f70 0x19f mem/gdt.o
- 0xe0101fff gdt_init
- *fill* 0xe010210f 0x1 00
- .text 0xe0102110 0x858 mem/heap.o
- 0xe01022a0 heap_create
- 0xe0102673 heap_alloc
- 0xe01027d4 heap_free
+ 0xe0100795 idt_syscallHandler
+ 0xe0100816 idt_init
+ 0xe0101044 idt_handleIrq
+ *fill* 0xe0101056 0xa 00
+ .text 0xe0101060 0x293 task/idt_.o
+ 0xe0101060 gdt_flush
+ 0xe010107d idt_flush
+ 0xe0101115 isr0
+ 0xe010111f isr1
+ 0xe0101129 isr2
+ 0xe0101133 isr3
+ 0xe010113d isr4
+ 0xe0101147 isr5
+ 0xe0101151 isr6
+ 0xe010115b isr7
+ 0xe0101165 isr8
+ 0xe010116d isr9
+ 0xe0101177 isr10
+ 0xe010117f isr11
+ 0xe0101187 isr12
+ 0xe010118f isr13
+ 0xe0101197 isr14
+ 0xe010119f isr15
+ 0xe01011a9 isr16
+ 0xe01011b3 isr17
+ 0xe01011bd isr18
+ 0xe01011c7 isr19
+ 0xe01011d1 isr20
+ 0xe01011db isr21
+ 0xe01011e5 isr22
+ 0xe01011ef isr23
+ 0xe01011f9 isr24
+ 0xe0101203 isr25
+ 0xe010120d isr26
+ 0xe0101217 isr27
+ 0xe0101221 isr28
+ 0xe010122b isr29
+ 0xe0101235 isr30
+ 0xe010123f isr31
+ 0xe0101249 irq0
+ 0xe0101253 irq1
+ 0xe010125d irq2
+ 0xe0101267 irq3
+ 0xe0101271 irq4
+ 0xe010127b irq5
+ 0xe0101285 irq6
+ 0xe010128f irq7
+ 0xe0101299 irq8
+ 0xe01012a3 irq9
+ 0xe01012ad irq10
+ 0xe01012b7 irq11
+ 0xe01012c1 irq12
+ 0xe01012cb irq13
+ 0xe01012d5 irq14
+ 0xe01012df irq15
+ 0xe01012e9 syscall64
+ *fill* 0xe01012f3 0x1 00
+ .text 0xe01012f4 0x2e8 task/task.o
+ 0xe01012f4 tasking_init
+ 0xe01013e7 tasking_switch
+ 0xe0101479 tasking_handleException
+ 0xe01014f9 thread_new
+ *fill* 0xe01015dc 0x4 00
+ .text 0xe01015e0 0xa task/task_.o
+ 0xe01015e0 read_eip
+ 0xe01015e3 task_idle
+ *fill* 0xe01015ea 0x2 00
+ .text 0xe01015ec 0x15 task/syscall.o
+ *fill* 0xe0101601 0x3 00
+ .text 0xe0101604 0xca lib/stdlib.o
+ 0xe0101604 memcpy
+ 0xe0101641 memset
+ 0xe0101670 memsetw
+ 0xe01016a6 strlen
+ *fill* 0xe01016ce 0x2 00
+ .text 0xe01016d0 0x173 lib/bitset.o
+ 0xe01016d0 bitset_set
+ 0xe0101724 bitset_clear
+ 0xe010177a bitset_test
+ 0xe01017bc bitset_firstFree
+ *fill* 0xe0101843 0x1 00
+ .text 0xe0101844 0x29f mem/mem.o
+ 0xe01019aa kmalloc_page
+ 0xe01019f1 kfree_page
+ 0xe0101a2c kheap_init
+ 0xe0101a81 kmalloc
+ 0xe0101abf kfree
+ *fill* 0xe0101ae3 0x1 00
+ .text 0xe0101ae4 0x513 mem/paging.o
+ 0xe0101ae4 frame_alloc
+ 0xe0101b11 frame_free
+ 0xe0101b2c paging_init
+ 0xe0101cc4 paging_cleanup
+ 0xe0101d1f pagedir_switch
+ 0xe0101d4e paging_fault
+ 0xe0101e29 pagedir_getPage
+ 0xe0101f08 page_map
+ 0xe0101f90 page_unmap
+ 0xe0101fb3 page_unmapFree
+ *fill* 0xe0101ff7 0x1 00
+ .text 0xe0101ff8 0x19f mem/gdt.o
+ 0xe0102087 gdt_init
+ *fill* 0xe0102197 0x1 00
+ .text 0xe0102198 0x858 mem/heap.o
+ 0xe0102328 heap_create
+ 0xe01026fb heap_alloc
+ 0xe010285c heap_free
-.iplt 0xe0102968 0x0 load address 0x00102968
+.iplt 0xe01029f0 0x0 load address 0x001029f0
.iplt 0x00000000 0x0 core/loader_.o
.rodata 0xe0103000 0x1bb load address 0x00103000
@@ -177,7 +181,7 @@ Linker script and memory map
.rel.iplt 0x00000000 0x0 core/loader_.o
.rel.text 0x00000000 0x0 core/loader_.o
-.data 0xe0104000 0xc load address 0x00104000
+.data 0xe0104000 0x20 load address 0x00104000
*(.data)
.data 0xe0104000 0x0 core/kmain.o
.data 0xe0104000 0x4 core/sys.o
@@ -186,14 +190,16 @@ Linker script and memory map
.data 0xe0104008 0x0 task/idt.o
.data 0xe0104008 0x4 task/task.o
0xe0104008 nextpid
- .data 0xe010400c 0x0 lib/stdlib.o
- .data 0xe010400c 0x0 lib/bitset.o
- .data 0xe010400c 0x0 mem/mem.o
- .data 0xe010400c 0x0 mem/paging.o
- .data 0xe010400c 0x0 mem/gdt.o
- .data 0xe010400c 0x0 mem/heap.o
+ .data 0xe010400c 0x14 task/syscall.o
+ 0xe010400c syscalls
+ .data 0xe0104020 0x0 lib/stdlib.o
+ .data 0xe0104020 0x0 lib/bitset.o
+ .data 0xe0104020 0x0 mem/mem.o
+ .data 0xe0104020 0x0 mem/paging.o
+ .data 0xe0104020 0x0 mem/gdt.o
+ .data 0xe0104020 0x0 mem/heap.o
-.igot.plt 0xe010400c 0x0 load address 0x0010400c
+.igot.plt 0xe0104020 0x0 load address 0x00104020
.igot.plt 0x00000000 0x0 core/loader_.o
.bss 0xe0104020 0x4950 load address 0x00104020
@@ -218,6 +224,7 @@ Linker script and memory map
0xe01088a0 processes
0xe01088a4 threads
0xe01088a8 current_thread
+ .bss 0xe01088ac 0x0 task/syscall.o
.bss 0xe01088ac 0x0 lib/stdlib.o
.bss 0xe01088ac 0x0 lib/bitset.o
*fill* 0xe01088ac 0x14 00
@@ -241,6 +248,7 @@ LOAD task/idt.o
LOAD task/idt_.o
LOAD task/task.o
LOAD task/task_.o
+LOAD task/syscall.o
LOAD lib/stdlib.o
LOAD lib/bitset.o
LOAD mem/mem.o
@@ -249,20 +257,21 @@ LOAD mem/gdt.o
LOAD mem/heap.o
OUTPUT(stem.elf elf32-i386)
-.comment 0x00000000 0x27
- .comment 0x00000000 0x27 core/kmain.o
- 0x28 (size before relaxing)
- .comment 0x00000000 0x28 core/sys.o
- .comment 0x00000000 0x28 core/monitor.o
- .comment 0x00000000 0x28 task/timer.o
- .comment 0x00000000 0x28 task/idt.o
- .comment 0x00000000 0x28 task/task.o
- .comment 0x00000000 0x28 lib/stdlib.o
- .comment 0x00000000 0x28 lib/bitset.o
- .comment 0x00000000 0x28 mem/mem.o
- .comment 0x00000000 0x28 mem/paging.o
- .comment 0x00000000 0x28 mem/gdt.o
- .comment 0x00000000 0x28 mem/heap.o
+.comment 0x00000000 0x11
+ .comment 0x00000000 0x11 core/kmain.o
+ 0x12 (size before relaxing)
+ .comment 0x00000000 0x12 core/sys.o
+ .comment 0x00000000 0x12 core/monitor.o
+ .comment 0x00000000 0x12 task/timer.o
+ .comment 0x00000000 0x12 task/idt.o
+ .comment 0x00000000 0x12 task/task.o
+ .comment 0x00000000 0x12 task/syscall.o
+ .comment 0x00000000 0x12 lib/stdlib.o
+ .comment 0x00000000 0x12 lib/bitset.o
+ .comment 0x00000000 0x12 mem/mem.o
+ .comment 0x00000000 0x12 mem/paging.o
+ .comment 0x00000000 0x12 mem/gdt.o
+ .comment 0x00000000 0x12 mem/heap.o
.note.GNU-stack
0x00000000 0x0
@@ -279,6 +288,8 @@ OUTPUT(stem.elf elf32-i386)
.note.GNU-stack
0x00000000 0x0 task/task.o
.note.GNU-stack
+ 0x00000000 0x0 task/syscall.o
+ .note.GNU-stack
0x00000000 0x0 lib/stdlib.o
.note.GNU-stack
0x00000000 0x0 lib/bitset.o
diff --git a/src/stem/task/idt.c b/src/stem/task/idt.c
index b9bd1ef..7c05e2e 100644
--- a/src/stem/task/idt.c
+++ b/src/stem/task/idt.c
@@ -3,6 +3,7 @@
#include <core/sys.h>
#include <mem/paging.h>
#include "task.h"
+#include "syscall.h"
#include <stdlib.h>
@@ -56,6 +57,8 @@ extern void irq13();
extern void irq14();
extern void irq15();
+extern void syscall64();
+
extern void idt_flush(int32_t ptr);
struct idt_entry idt_entries[256];
@@ -91,6 +94,10 @@ void idt_irqHandler(struct registers regs) {
if (doSwitch) tasking_switch();
}
+void idt_syscallHandler(struct registers regs) {
+ syscalls[regs.eax](&regs);
+}
+
static void idt_setGate(uint8_t num, uint32_t base, uint16_t sel, uint8_t flags) {
idt_entries[num].base_lo = base & 0xFFFF;
idt_entries[num].base_hi = (base >> 16) & 0xFFFF;
@@ -168,6 +175,8 @@ void idt_init() {
idt_setGate(46, (int32_t)irq14, 0x08, 0x8E);
idt_setGate(47, (int32_t)irq15, 0x08, 0x8E);
+ idt_setGate(64, (int32_t)syscall64, 0x08, 0x8E);
+
idt_flush((int32_t)&idt_ptr);
monitor_write("IDT ok\n");
diff --git a/src/stem/task/idt_.asm b/src/stem/task/idt_.asm
index b73f7a5..63d1570 100644
--- a/src/stem/task/idt_.asm
+++ b/src/stem/task/idt_.asm
@@ -63,6 +63,7 @@ idt_flush:
COMMONSTUB isr
COMMONSTUB irq
+COMMONSTUB syscall
;************************************************************************************
@@ -92,6 +93,15 @@ COMMONSTUB irq
jmp irq_common_stub
%endmacro
+%macro SYSCALL 1
+ [GLOBAL syscall%1]
+ syscall%1:
+ cli
+ push byte 0
+ push byte %1
+ jmp syscall_common_stub
+%endmacro
+
ISR_NOERRCODE 0
ISR_NOERRCODE 1
ISR_NOERRCODE 2
@@ -141,3 +151,5 @@ IRQ 12, 44
IRQ 13, 45
IRQ 14, 46
IRQ 15, 47
+
+SYSCALL 64
diff --git a/src/stem/task/syscall.c b/src/stem/task/syscall.c
new file mode 100644
index 0000000..281d680
--- /dev/null
+++ b/src/stem/task/syscall.c
@@ -0,0 +1,16 @@
+#include "syscall.h"
+
+#define CALL0(name, scname) static void scname(struct registers* r) { r->eax = name(); }
+#define CALL1(name, scname) static void scname(struct registers* r) { \
+ r->eax = name(r->ebx); }
+#define CALL2(name, scname) static void scname(struct registers* r) { \
+ r->eax = name(r->ebx, r->ecx); }
+
+CALL0(tasking_switch, schedule_sc);
+
+int_callback syscalls[] = {
+ 0, //Syscall 0 will be thread_exit
+ schedule_sc,
+ 0, //Syscall 2 will be thread_sleep
+ 0, //Syscall 3 will be process_exit
+ 0 };
diff --git a/src/stem/task/syscall.h b/src/stem/task/syscall.h
new file mode 100644
index 0000000..54af108
--- /dev/null
+++ b/src/stem/task/syscall.h
@@ -0,0 +1,9 @@
+#ifndef DEF_SYSCALL_H
+#define DEF_SYSCALL_H
+
+#include "idt.h"
+
+extern int_callback syscalls[];
+
+#endif
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 02:46:22 +0000