diff options
| author | Markos Chandras <markos.chandras@imgtec.com> | 2008-02-05 14:51:48 +0000 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2013-03-14 22:45:15 +0100 |
| commit | 22686a1383c4a4a319eaaa6b16b1a9540114bd66 (patch) | |
| tree | 04e12086f9187c150ba6a33db0368b9903e50363 /libc/sysdeps/linux/metag/crt1.S | |
| parent | 37439e66a31f251eba39604885f57099a43d943d (diff) | |
Add support for the Meta architecture
Meta cores are 32-bit, hardware multithreaded, general purpose, embedded
processors which also feature a DSP instruction set, and can be found in
many digital radios. They are capable of running different operating
systems on different hardware threads, for example a digital radio might
run RTOSes for DAB decoding and audio decoding on 3 hardware threads,
and run Linux on the 4th hardware thread to manage the user interface,
networking etc. HTPs are also capable of running SMP Linux on multiple
hardware threads.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/metag/crt1.S')
| -rw-r--r-- | libc/sysdeps/linux/metag/crt1.S | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/metag/crt1.S b/libc/sysdeps/linux/metag/crt1.S new file mode 100644 index 000000000..74adc1fdb --- /dev/null +++ b/libc/sysdeps/linux/metag/crt1.S @@ -0,0 +1,76 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + +#include <asm/unistd.h> + + .text + .global __start + .type __start,function +__start: + MOV D0FrT,A0StP + MOV A0FrP,A0StP + + MOV A0.2,#0 + MOV A0.3,#0 + + MOV A1.1,#0 + MOV A1.2,#0 + MOV A1.3,#0 + + MOV D0.5,#0 + MOV D0.6,#0 + MOV D0.7,#0 + + MOV D1.5,#0 + MOV D1.6,#0 + MOV D1.7,#0 + + MOV D1Ar3,D0Ar2 ! argv + MOV D0Ar2,D1Ar1 ! argc + +#ifdef __PIC__ + ADDT A1LbP,CPC1,#HI(__GLOBAL_OFFSET_TABLE__) + ADD A1LbP,A1LbP,#LO(__GLOBAL_OFFSET_TABLE__+4) + + MOV D1Ar1,A1LbP + ADDT D1Ar1,D1Ar1,#HI(_main@GOTOFF) + ADD D1Ar1,D1Ar1,#LO(_main@GOTOFF) + + MOV D0Ar4,A1LbP + ADDT D0Ar4,D0Ar4,#HI(__init@GOTOFF) + ADD D0Ar4,D0Ar4,#LO(__init@GOTOFF) + + MOV D1Ar5,A1LbP + ADDT D1Ar5,D1Ar5,#HI(__fini@GOTOFF) + ADD D1Ar5,D1Ar5,#LO(__fini@GOTOFF) +#else + MOVT D1Ar1,#HI(_main) + ADD D1Ar1,D1Ar1,#LO(_main) + MOVT D0Ar4,#HI(__init) + ADD D0Ar4,D0Ar4,#LO(__init) + MOVT D1Ar5,#HI(__fini) + ADD D1Ar5,D1Ar5,#LO(__fini) +#endif + + MOV D0Ar6,#0 ! rtld_fini + + MOVT D1Re0,#0x80 + + SETL [A0StP++],D0Re0,D1Re0 ! stack_end (8Mb) + + MOV D1Re0,#0 + MOV D0Re0,#0 + +#ifdef __PIC__ + CALLR D1RtP, ___uClibc_main@PLT +#else + CALLR D1RtP, ___uClibc_main +#endif + + MOV D1Re0,#__NR_exit + MOV D1Ar1,#0x1 + SWITCH #0x440001 ! exit syscall + + .size __start,.-__start |