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Index: util-vserver-0.30.210/lib/syscall-alternative.h
===================================================================
--- util-vserver-0.30.210.orig/lib/syscall-alternative.h
+++ util-vserver-0.30.210/lib/syscall-alternative.h
@@ -1,9 +1,7 @@
- // from http://vserver.13thfloor.at/Experimental/SYSCALL/syscall_shiny7.h
-
#ifndef __SYSCALL_NEW_H
#define __SYSCALL_NEW_H
-/* Copyright (C) 2005 Herbert P�tzl
+/* Copyright (C) 2005-2006 Herbert P�tzl
global config options
@@ -39,12 +37,13 @@
__sysc_rcon(n) ... syscall register constraint
__sysc_regs ... list of input regs for clobber
__sysc_type ... register type
+ __sysc_aout ... asm code output constraint
if all else fails
__sc_asmload(n,N,...) ... asm code to prepare arguments
__sc_asmsysc(n,N) ... asm code to execute syscall
- __sc_asmsave(n,r,e) ... asm code to store results
+ __sc_asmsave(n) ... asm code to store results
*/
@@ -243,7 +242,8 @@
sret: r0(r28)
serr: (sret >= (unsigned)-EMAXERRNO)
call: ble 0x100(%%sr2, %%r0)
- clob: r1, r2, r4, r20, r29, r31, memory
+ clob: r1, r2, (r4), r20, r29, r31, memory
+ picr: pr(r19)
*/
#define __sysc_max_err 4095
@@ -253,13 +253,21 @@
("r26", "r25", "r24", "r23", "r22", "r21")
#define __sysc_cmd_sys "ble 0x100(%%sr2,%%r0)"
-#define __sysc_cmd_fin "ldi %0,%%r20"
-#define __sysc_clobber __sysc_regs, \
- "r1", "r2", "r4", "r20", "r29", "r31", "memory"
+#define __sysc_pre(n) \
+ __pasm(n,1,1, "copy %%r19, %%r4" , )
-#warning syscall arch hppa not tested yet
+#define __sysc_fin(n) \
+ __casm(n,1,1, "ldi %0,%%r20" , )\
+ __pasm(n,1,1, "copy %%r4, %%r19" , )
+#ifndef __PIC__
+#define __sysc_clobber __sysc_regs, \
+ "r1", "r2", "r20", "r29", "r31", "memory"
+#else
+#define __sysc_clobber __sysc_regs, \
+ "r1", "r2", "r4", "r20", "r29", "r31", "memory"
+#endif
/* *****************************************
@@ -277,6 +285,7 @@
sret: r0(eax)
serr: (sret >= (unsigned)-EMAXERRNO)
call: int 0x80
+ picr: pr(ebx)
clob: memory
*/
@@ -301,15 +310,18 @@
__casm(n,6,1, "pushl %%ebp" , )\
""::__sc_iregs(n,__VA_ARGS__):__sysc_clobber)
+#define __sc_asmsave(n)
+
#define __sysc_pre(n) \
__casm(n,6,1, "movl %%eax,%%ebp" , )\
- __casm(n,0,1, "movl %0,%%eax" , )\
+ __casm(n,0,1, "movl %1,%%eax" , )\
#define __sysc_fin(n) \
__casm(n,6,1, "popl %%ebp" , )\
__pasm(n,1,1, "popl %%ebx" , )\
-#define __sysc_clobber __sysc_regs, "eax", "memory"
+#define __sysc_aout "=a"(__res)
+#define __sysc_clobber __sysc_regs, "memory"
/* *****************************************
@@ -399,8 +411,43 @@
#elif defined(__mips__)
-#error syscall arch mips not implemented yet
+/* The ABIO32 calling convention uses a0-a3 to pass the first
+ four arguments, the rest is passed on the userspace stack. The 5th arg
+ starts at 16($sp).
+
+ ABIN32 and ABI64 pass 6 args in a0-a3, t0-t1.
+
+ scnr: id(v0)
+ args: a1(a0), a2(a1), a3(a2), a4(a3), a5(16($sp)), a6(20($sp))
+ sret: r0(v0)
+ serr: e0(a3)
+ call: syscall
+ clob: at, v0, t0-t7, t8-t9
+*/
+
+#define __sysc_reg_cid "v0"
+#define __sysc_reg_ret "v0"
+#define __sysc_reg_err "a3"
+#define __sysc_cmd_sys "syscall"
+
+#define __sysc_reg(n) __arg_##n\
+ ("a0","a1","a2","a3", "t0", "t1")
+#define __sysc_clobber "$1", "$3", "$8", "$9", "$10", "$11", "$12", \
+ "$13", "$14", "$15", "$24", "$25", "memory"
+
+#if _MIPS_SIM == _ABIO32
+#define __sysc_pre(n) \
+ __casm(n,5,1,"addiu $sp,$sp,-32",) \
+ __casm(n,6,1,"sw $9,20($sp)",) \
+ __casm(n,5,1,"sw $8, 16($sp)",)
+#define __sysc_fin(n) \
+ __casm(n,5,1,"addiu $sp,$sp,32",)
+#elif (_MIPS_SIM == _ABIN32) || (_MIPS_SIM == _ABI64)
+#warning syscall arch mips with ABI N32 and 64 not tested yet
+#else
+#error unknown mips ABI version
+#endif
/* *****************************************
@@ -651,6 +698,7 @@
#define __sysc_clobber __sysc_regs, \
"cc", "r11", "rcx", "memory"
+#define __sysc_aout "=a"(__res)
#else
#error unknown kernel arch
@@ -834,7 +882,7 @@
#define __sc_inp_def(n,value)
#endif
-#ifndef __sysc_save
+#if !defined(__sysc_save) && !defined(__sysc_aout)
#define __sc_res_def(n,r) __sc_asm_reg(n, r);
#else
#define __sc_res_def(n,r) __sc_reg(n);
@@ -865,7 +913,6 @@
#endif
-
#ifdef __sc_complex /* complex result */
#ifndef __sysc_errc
@@ -918,6 +965,7 @@
return (type)(res)
#endif
+
#define __sc_results \
__sc_res_def(__res, __sysc_reg_res)
@@ -939,8 +987,13 @@
__casm(n,3,0,"%3 ",) __casm(n,4,0,"%4 ",) __casm(n,5,0,"%5 ",) \
__casm(n,6,0,"%6 ",) "*/"
+#ifdef __sysc_aout
+#define __sc_dummy_save(n)
+#define __sc_asmsave(n)
+#else
#define __sc_dummy_save(n) "/* gcc dummy save " \
__casm(n,0,0,"%0 ",) __casm(n,1,0,"%1 ",) "*/"
+#endif
#define __comment(name) "\t/* kernel sys_" \
#name "[" __stringify(__sc_id(name)) "] */"
@@ -1006,10 +1059,14 @@
#endif
#endif
+#ifndef __sysc_aout
+#define __sysc_aout
+#endif
+
#ifndef __sc_asmsysc
#define __sc_asmsysc(n,N) __sc_asm_vol( \
__casm(n,0,0, __sc_cmds(n,N) , )\
- ::"i"(__sc_id(N)) : __sysc_clobber)
+ :__sysc_aout:"i"(__sc_id(N)) : __sysc_clobber)
#endif
#ifndef __sc_asmsave
@@ -1031,33 +1088,33 @@
-#define _syscall0(type, name) \
+#define _syscall0(type, name) \
type name(void) \
__sc_body(0, type, name, *)
-#define _syscall1(type, name, type1, arg1) \
+#define _syscall1(type, name, type1, arg1) \
type name(type1 arg1) \
__sc_body(1, type, name, arg1)
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
+#define _syscall2(type, name, type1, arg1, type2, arg2) \
type name(type1 arg1, type2 arg2) \
__sc_body(2, type, name, arg1, arg2)
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
+#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
type name(type1 arg1, type2 arg2, type3 arg3) \
__sc_body(3, type, name, arg1, arg2, arg3)
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
+#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
type4, arg4) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
__sc_body(4, type, name, arg1, arg2, arg3, arg4)
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
+#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
+ type4, arg4, type5, arg5) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
__sc_body(5, type, name, arg1, arg2, arg3, arg4, arg5)
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
+#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
type4, arg4, type5, arg5, type6, arg6) \
type name(type1 arg1, type2 arg2, type3 arg3, \
type4 arg4, type5 arg5, type6 arg6) \
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