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Syscall args

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This commit is contained in:
Adrien Bourmault 2021-03-04 18:05:20 +01:00
parent 999f41f3c2
commit bc2e1f80d3
Signed by: neox
GPG Key ID: 6EB408FE0ACEC664
4 changed files with 15 additions and 13 deletions
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3
include/kernel/ke/syscall.h
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@ -35,7 +35,8 @@ extern error_t KeSyscall(ulong code);
extern void KeJumpToUserspace(ulong args, void *entryPoint, void *stackAddr); extern void KeJumpToUserspace(ulong args, void *entryPoint, void *stackAddr);
error_t _KeSyscallHandler(ulong code, ISRFrame_t *regs); error_t _KeSyscallHandler( ulong code, void *arg0, void *arg1, void *arg2,
ISRFrame_t *regs );
//----------------------------------------------------------------------------// //----------------------------------------------------------------------------//

2
kaleid/kernel/ke/isr.asm
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@ -68,7 +68,7 @@ isrPreHandler:
add rsp, 48 add rsp, 48
; pop registers ; pop registers
popAll popAll
; pop the error code and interrupt id ; pop the error code, interrupt id + crx
add rsp, 16 add rsp, 16
iretq iretq

20
kaleid/kernel/ke/syscall.asm
View File

@ -41,13 +41,13 @@ syscallPreHandler:
push r13 push r13
push r12 push r12
push r11 push r11
push 0 push 0 ; r10
push r9 push r9
push r8 push r8
push rbp push rbp
push 0 push 0 ; rdi
push 0 push 0 ; rsi
push 0 push 0 ; rdx
push rcx push rcx
push rbx push rbx
push rax push rax
@ -76,21 +76,21 @@ syscallPreHandler:
add rsp, 48 add rsp, 48
; pop registers except return value ; pop registers except return value
pop rbx pop rbx
pop rbx ; 2x rbx to discard rax pop rbx ; 2x rbx to discard old rax
pop rcx pop rcx
pop rdx pop rdx ; 0
pop rsi pop rsi ; 0
pop rdi pop rdi ; 0
pop rbp pop rbp
pop r8 pop r8
pop r9 pop r9
pop r10 pop r10 ; 0
pop r11 pop r11
pop r12 pop r12
pop r13 pop r13
pop r14 pop r14
pop r15 pop r15
; pop the error code and interrupt id ; pop the error code, interrupt id + crx
add rsp, 16 add rsp, 16
iretq iretq

3
kaleid/kernel/ke/syscall.c
View File

@ -27,7 +27,8 @@
#include <ke/idt.h> #include <ke/idt.h>
#include <io/vga.h> #include <io/vga.h>
error_t _KeSyscallHandler(ulong code, ISRFrame_t *regs) error_t _KeSyscallHandler( ulong code, void *arg0, void *arg1, void *arg2,
ISRFrame_t *regs )
{ {
DebugLog("Got a system call code %ld from cs %#x\n", code, regs->cs); DebugLog("Got a system call code %ld from cs %#x\n", code, regs->cs);