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Fixed most of userspace (mm0) for capability manipulation

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This commit is contained in:
Bahadir Balban
2009-11-07 19:43:05 +02:00
parent e8f9f3f04a
commit e8f002f879
6 changed files with 246 additions and 42 deletions
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28
conts/libl4/src/arm/syscalls.S
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@@ -37,20 +37,6 @@ BEGIN_PROC(l4_getid)
ldr pc, [r12] @ Return.
END_PROC(l4_getid)
/*
* Reads/manipulates capabilities of a thread, particularly a pager.
* @r0 = request type, @r1 = request flags, @r2 = io buffer ptr
*/
BEGIN_PROC(l4_capability_control)
ldr r12, =__l4_capability_control
ldr pc, [r12] @ Jump into the SWI
/*
* The LR_USR points at the return address of this function. The system
* call return path directly jumps to LR_USR so we don't even need a
* return instruction here.
*/
END_PROC(l4_capability_control)
/*
* For clone() we need special assembler handling
* Same signature as ipc(): @r0 = to, @r1 = from @r2 = flags
@@ -124,6 +110,20 @@ BEGIN_PROC(l4_map)
ldmfd sp!, {r4, pc}
END_PROC(l4_map)
/*
* Reads/manipulates capabilities of a thread, particularly a pager.
* @r0 = request type, @r1 = request flags,
* @r2 = capid, @r3 = target thread id, @r4 = io buffer ptr
*/
BEGIN_PROC(l4_capability_control)
stmfd sp!, {r4, lr}
ldr r4, [sp, #8] @ FIXME: Is this right?
ldr r12, =__l4_capability_control
mov lr, pc @ We must return here to restore r4.
ldr pc, [r12]
ldmfd sp!, {r4, pc}
END_PROC(l4_capability_control)
/*
* System call that unmaps an area of memory into the given address space.
* @r0 = virtual, @r1 = pages, @r2 = tid of address space to unmap