diff options
| author | Miguel <m.i@gmx.at> | 2018-09-01 12:10:13 +0200 |
|---|---|---|
| committer | Miguel <m.i@gmx.at> | 2018-09-01 12:10:13 +0200 |
| commit | 51ab94a29f64de42e3dec3a3ef0ec6a94cda28a6 (patch) | |
| tree | c2cf5f0b31c2f80ac815dc366ece52a42983219f /asm/task.s | |
| parent | d52c3d119dbbbf2a9573e7698a878cf74afdd08c (diff) | |
working on new syscalls
Diffstat (limited to 'asm/task.s')
| -rw-r--r-- | asm/task.s | 12 |
1 files changed, 10 insertions, 2 deletions
@@ -6,6 +6,8 @@ task_pusha: push $0x8 // code segment push $userfunc + push $0x666 + pusha push %ds @@ -17,13 +19,15 @@ task_pusha: now stack looks like: - param // esp+64 + param // esp+68 returnaddy eflags code segment userfunc + 0x666 + eax // rest by popa ecx edx @@ -40,7 +44,7 @@ task_pusha: */ - mov 64(%esp),%eax // get address of alternative stack where we want to simulate the pusha + mov 68(%esp),%eax // get address of alternative stack where we want to simulate the pusha mov (%esp),%ecx mov %ecx,(%eax) @@ -87,6 +91,9 @@ task_pusha: mov 56(%esp),%ecx mov %ecx,56(%eax) + mov 60(%esp),%ecx + mov %ecx,60(%eax) + pop %gs pop %fs pop %es @@ -97,5 +104,6 @@ task_pusha: pop %eax pop %eax pop %eax + pop %eax ret |