tarm - plan9port - [fork] Plan 9 from user space
HTML git clone git://src.adamsgaard.dk/plan9port
DIR Log
DIR Files
DIR Refs
DIR README
DIR LICENSE
---
DIR commit f51bf048784abd642dea4f033bc95acbd4468b6a
DIR parent 48ca8d21f75b734a15091b77abf5ed4a92be90f2
HTML Author: rsc <devnull@localhost>
Date: Tue, 1 Nov 2005 18:35:44 +0000
arm
Diffstat:
M src/Makefile | 11 ++++++++++-
A src/libthread/Linux-arm-asm.s | 53 ++++++++++++++++++++++++++++++
M src/libthread/Linux.c | 40 +++++++++++++++++++++++++++++++
M src/mkhdr | 2 ++
4 files changed, 105 insertions(+), 1 deletion(-)
---
DIR diff --git a/src/Makefile b/src/Makefile
t@@ -1,6 +1,15 @@
../bin/mk: mkmk.sh
SYSNAME=`uname` export SYSNAME; \
- OBJTYPE=`uname -m | sed 's;i.86;386;; s;amd64;x86_64;; s;/.*;;; s; ;;g; s/PowerMacintosh/power/; s/macppc/power/g; s/ppc64/power/g; s/ppc/power/g'` export OBJTYPE; \
+ OBJTYPE=`uname -m | sed ' \
+ s;i.86;386;; \
+ s;amd64;x86_64;; \
+ s;/.*;;; s; ;;g; \
+ s;armv4l;arm;g; \
+ s;PowerMacintosh;power;g; \
+ s;macppc;power;g; \
+ s;ppc64;power;g; \
+ s;ppc;power;g; \
+ '` export OBJTYPE; \
PATH=/bin:/usr/bin:/usr/local/bin:`pwd`/../bin:$$PATH export PATH; \
PLAN9=`pwd`/.. export PLAN9; \
sh -x mkmk.sh
DIR diff --git a/src/libthread/Linux-arm-asm.s b/src/libthread/Linux-arm-asm.s
t@@ -0,0 +1,53 @@
+
+.globl _tas
+_tas:
+ mov r3, #0xCA000000
+ add r3, r3, #0xFE0000
+ add r3, r3, #0xBA00
+ add r3, r3, #0xBE
+ swp r3, r3, [r0]
+ mov r0, r3
+ mov pc, lr
+
+.globl getmcontext
+getmcontext:
+ /* r0 will be overwritten */
+ str r1, [r0,#4]!
+ str r2, [r0,#4]!
+ str r3, [r0,#4]!
+ str r4, [r0,#4]!
+ str r5, [r0,#4]!
+ str r6, [r0,#4]!
+ str r7, [r0,#4]!
+ str r8, [r0,#4]!
+ str r9, [r0,#4]!
+ str r10, [r0,#4]!
+ str r11, [r0,#4]!
+ str r12, [r0,#4]!
+ str r13, [r0,#4]!
+ str r14, [r0,#4]!
+ /* r15 is pc */
+ mov r0, #0
+ mov pc, lr
+
+.globl setmcontext
+setmcontext:
+ /* r0 will be overwritten */
+ ldr r1, [r0,#4]!
+ ldr r2, [r0,#4]!
+ ldr r3, [r0,#4]!
+ ldr r4, [r0,#4]!
+ ldr r5, [r0,#4]!
+ ldr r6, [r0,#4]!
+ ldr r7, [r0,#4]!
+ ldr r8, [r0,#4]!
+ ldr r9, [r0,#4]!
+ ldr r10, [r0,#4]!
+ ldr r11, [r0,#4]!
+ ldr r12, [r0,#4]!
+ ldr r13, [r0,#4]!
+ ldr r14, [r0,#4]!
+ /* r15 is pc */
+ mov r0, #1
+ mov pc, lr
+
DIR diff --git a/src/libthread/Linux.c b/src/libthread/Linux.c
t@@ -436,3 +436,43 @@ _threadpexit(void)
_exit(0);
}
+#ifdef __arm__
+extern int getmcontext(mcontext_t*);
+extern int setmcontext(const mcontext_t*);
+
+void
+makecontext(ucontext_t *uc, void (*fn)(void), int argc, ...)
+{
+ int i, *sp;
+ va_list arg;
+
+ sp = (int*)uc->uc_stack.ss_sp+uc->uc_stack.ss_size/4;
+ va_start(arg, argc);
+ for(i=0; i<4 && i<argc; i++)
+ uc->uc_mcontext.gregs[0] = va_arg(arg, uint);
+ uc->uc_mcontext.gregs[13] = (uint)sp;
+ uc->uc_mcontext.gregs[14] = (uint)fn;
+}
+
+int
+getcontext(ucontext_t *uc)
+{
+ return getmcontext(&uc->uc_mcontext);
+}
+
+int
+setcontext(const ucontext_t *uc)
+{
+ setmcontext(&uc->uc_mcontext);
+ return 0; /* not reached */
+}
+
+int
+swapcontext(ucontext_t *oucp, const ucontext_t *ucp)
+{
+ if(getcontext(oucp) == 0)
+ setcontext(ucp);
+ return 0;
+}
+#endif
+
DIR diff --git a/src/mkhdr b/src/mkhdr
t@@ -1,9 +1,11 @@
SYSNAME=`uname`
+# objtype rules also in Makefile
OBJTYPE=`uname -m | sed '
s;i.86;386;;
s;amd64;x86_64;;
s;/.*;;;
s; ;;g;
+ s;armv4l;arm;g;
s;PowerMacintosh;power;g;
s;macppc;power;g;
s;ppc64;power;g;