PIC support for syscall bindings. Thanks to Sebastian Sumpf/Genode Labs

This commit is contained in:
Philipp Kupferschmied 2010-10-14 11:22:53 +02:00
parent c38ee120d5
commit 6af04051e9
1 changed files with 88 additions and 39 deletions

View File

@ -47,6 +47,28 @@
# define __L4_CLOBBER_REGS "ebx", "cc"
#endif
#ifdef __cplusplus
#define _C_ "C"
#else
#define _C_
#endif
/*
* Note: We do not call the __L4*-functions from inline assembly any more,
* instead we pass the pointers as input operands. This way there is no need for
* the linker to generate text relocations for position independent code.
*/
extern _C_ void __L4_ExchangeRegisters(void);
extern _C_ void __L4_ThreadControl(void);
extern _C_ void __L4_SystemClock(void);
extern _C_ void __L4_ThreadSwitch(void);
extern _C_ void __L4_Schedule(void);
extern _C_ void __L4_Ipc(void);
extern _C_ void __L4_Lipc(void);
extern _C_ void __L4_Unmap(void);
extern _C_ void __L4_SpaceControl(void);
extern _C_ void __L4_ProcessorControl(void);
extern _C_ void __L4_MemoryControl(void);
L4_INLINE void * L4_KernelInterface (L4_Word_t *ApiVersion,
L4_Word_t *ApiFlags,
@ -104,23 +126,26 @@ L4_INLINE L4_ThreadId_t L4_ExchangeRegisters (L4_ThreadId_t dest,
"/* L4_ExchangeRegisters() */ \n"
__L4_SAVE_REGS
" pushl %%esi \n"
" pushl %%edi \n"
" movl (%%esi), %%ebp \n"
" movl 4(%%esi), %%edi \n"
" movl 8(%%esi), %%ebx \n"
" movl 12(%%esi), %%esi \n"
" call __L4_ExchangeRegisters \n"
" xchgl %%esi, (%%esp) \n"
" call *(%%esp) \n"
" xchgl %%esi, 4(%%esp) \n"
" movl %%edi, 4(%%esi) \n"
" movl %%ebx, 8(%%esi) \n"
" movl %%ebp, (%%esi) \n"
" popl %%edi \n"
" popl %%esi \n"
__L4_RESTORE_REGS
:
"=a" (result), "=c" (*old_control), "=d" (*old_sp), "=S" (*old_ip)
:
"a" (dest.raw), "c" (control), "d" (sp), "S" (&in)
"a" (dest.raw), "c" (control), "d" (sp), "S" (&in),
"D" (__L4_ExchangeRegisters)
:
"edi", "memory", __L4_CLOBBER_REGS);
"memory", __L4_CLOBBER_REGS);
old_pager->raw = in.ebp;
*old_flags = in.edi;
@ -141,7 +166,9 @@ L4_INLINE L4_Word_t L4_ThreadControl (L4_ThreadId_t dest,
__asm__ __volatile__ (
"/* L4_ThreadControl() */ \n"
__L4_SAVE_REGS
" call __L4_ThreadControl \n"
" movl %%edi, %%ebx \n"
" movl %9, %%edi \n"
" call *%%ebx \n"
__L4_RESTORE_REGS
: /* outputs */
@ -156,7 +183,8 @@ L4_INLINE L4_Word_t L4_ThreadControl (L4_ThreadId_t dest,
"1" (Pager),
"2" (Scheduler),
"3" (SpaceSpecifier),
"4" (UtcbLocation)
"m" (UtcbLocation),
"D" (__L4_ThreadControl)
: /* clobbers */
__L4_CLOBBER_REGS);
@ -171,14 +199,14 @@ L4_INLINE L4_Clock_t L4_SystemClock (void)
__asm__ __volatile__ (
"/* L4_SystemClock() */ \n"
" call __L4_SystemClock \n"
" call *%%ecx \n"
: /* outputs */
"=A" (result.raw)
: /* no inputs */
:
"c" (__L4_SystemClock)
: /* clobbers */
"ecx", "esi", "edi");
"esi", "edi");
return result;
}
@ -188,12 +216,13 @@ L4_INLINE void L4_ThreadSwitch (L4_ThreadId_t dest)
{
__asm__ __volatile__ (
"/* L4_ThreadSwitch() */ \n"
" call __L4_ThreadSwitch \n"
" call *%%ecx \n"
: /* no outputs */
: /* inputs */
"a" (dest)
"a" (dest),
"c" (__L4_ThreadSwitch)
/* no clobbers */
);
@ -213,7 +242,9 @@ L4_INLINE L4_Word_t L4_Schedule (L4_ThreadId_t dest,
__asm__ __volatile__ (
"/* L4_Schedule() */ \n"
__L4_SAVE_REGS
" call __L4_Schedule \n"
" movl %%edi, %%ebx \n"
" movl %9, %%edi \n"
" call *%%ebx \n"
__L4_RESTORE_REGS
: /* outputs */
@ -228,7 +259,8 @@ L4_INLINE L4_Word_t L4_Schedule (L4_ThreadId_t dest,
"1" (PrioControl),
"2" (TimeControl),
"3" (ProcessorControl),
"4" (PreemptionControl)
"m" (PreemptionControl),
"D" (__L4_Schedule)
: /* clobbers */
__L4_CLOBBER_REGS);
@ -246,10 +278,13 @@ L4_INLINE L4_MsgTag_t L4_Ipc (L4_ThreadId_t to,
L4_Word_t * utcb = __L4_X86_Utcb ();
#if defined(__pic__)
__asm__ __volatile__ (
"/* L4_Ipc() */ \n"
__L4_SAVE_REGS
" call __L4_Ipc \n"
" movl %%eax, %%ebx \n"
" movl %5, %%eax \n"
" call *%%ebx \n"
" movl %%ebp, %%ecx \n"
" movl %%ebx, %%edx \n"
__L4_RESTORE_REGS
@ -262,11 +297,13 @@ L4_INLINE L4_MsgTag_t L4_Ipc (L4_ThreadId_t to,
: /* inputs */
"S" (utcb[0]),
"a" (to.raw),
"m" (to.raw),
"D" (utcb),
"c" (Timeouts),
"d" (FromSpecifier)
"d" (FromSpecifier),
"a" (__L4_Ipc)
);
#else
L4_Word_t dummy;
@ -317,7 +354,9 @@ L4_INLINE L4_MsgTag_t L4_Lipc (L4_ThreadId_t to,
__asm__ __volatile__ (
"/* L4_Lipc() */ \n"
__L4_SAVE_REGS
" call __L4_Lipc \n"
" movl %%eax, %%ebx \n"
" movl %5, %%eax \n"
" call *%%ebx \n"
" movl %%ebp, %%ecx \n"
" movl %%ebx, %%edx \n"
__L4_RESTORE_REGS
@ -330,10 +369,11 @@ L4_INLINE L4_MsgTag_t L4_Lipc (L4_ThreadId_t to,
: /* inputs */
"S" (utcb[0]),
"a" (to.raw),
"m" (to.raw),
"D" (utcb),
"c" (Timeouts),
"d" (FromSpecifier)
"d" (FromSpecifier),
"a" (__L4_Lipc)
);
#else
L4_Word_t dummy;
@ -378,7 +418,7 @@ L4_INLINE void L4_Unmap (L4_Word_t control)
__asm__ __volatile__ (
"/* L4_Unmap() */ \n"
__L4_SAVE_REGS
" call __L4_Unmap \n"
" call *%%ecx \n"
__L4_RESTORE_REGS
: /* outputs */
@ -389,10 +429,11 @@ L4_INLINE void L4_Unmap (L4_Word_t control)
: /* inputs */
"0" (utcb[0]),
"1" (utcb),
"2" (control)
"2" (control),
"c" (__L4_Unmap)
: /* clobbered */
"ecx", "edx", __L4_CLOBBER_REGS);
"edx", __L4_CLOBBER_REGS);
}
@ -408,7 +449,9 @@ L4_INLINE L4_Word_t L4_SpaceControl (L4_ThreadId_t SpaceSpecifier,
__asm__ __volatile__ (
"/* L4_SpaceControl() */ \n"
__L4_SAVE_REGS
" call __L4_SpaceControl \n"
" movl %%edi, %%ebx \n"
" movl %9, %%edi \n"
" call *%%ebx \n"
__L4_RESTORE_REGS
: /* outputs */
@ -423,7 +466,8 @@ L4_INLINE L4_Word_t L4_SpaceControl (L4_ThreadId_t SpaceSpecifier,
"1" (control),
"2" (KernelInterfacePageArea),
"3" (UtcbArea),
"4" (redirector)
"m" (redirector),
"D" (__L4_SpaceControl)
: /* clobbers */
__L4_CLOBBER_REGS);
@ -442,7 +486,7 @@ L4_INLINE L4_Word_t L4_ProcessorControl (L4_Word_t ProcessorNo,
__asm__ __volatile__ (
"/* L4_ProcessorControl() */ \n"
__L4_SAVE_REGS
" call __L4_ProcessorControl \n"
" call *%%edi \n"
__L4_RESTORE_REGS
: /* outputs */
@ -456,7 +500,8 @@ L4_INLINE L4_Word_t L4_ProcessorControl (L4_Word_t ProcessorNo,
"0" (ProcessorNo),
"1" (InternalFrequency),
"2" (ExternalFrequency),
"3" (voltage)
"3" (voltage),
"4" (__L4_ProcessorControl)
: /* clobbers */
__L4_CLOBBER_REGS);
@ -474,11 +519,14 @@ L4_INLINE L4_Word_t L4_MemoryControl (L4_Word_t control,
__asm__ __volatile__ (
"/* L4_MemoryControl() */ \n"
__L4_SAVE_REGS
" pushl %%edi \n"
" movl %8, %%edi \n"
" movl 12(%6), %%ebp \n"
" movl 8(%6), %%ebx \n"
" movl 4(%6), %%edx \n"
" movl (%6), %%ecx \n"
" call __L4_MemoryControl \n"
" call *(%%esp) \n"
" popl %%edi \n"
__L4_RESTORE_REGS
: /* outputs */
@ -492,7 +540,8 @@ L4_INLINE L4_Word_t L4_MemoryControl (L4_Word_t control,
"0" (control),
"1" (attributes),
"3" (utcb[0]),
"4" (utcb)
"m" (utcb),
"4" (__L4_MemoryControl)
: /* clobbers */
__L4_CLOBBER_REGS);