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authorRich Felker <dalias@aerifal.cx>2018-06-14 14:26:30 -0400
committerRich Felker <dalias@aerifal.cx>2018-06-19 13:24:05 -0400
commitf81e44a0d96c88e052e51982f9fdd6fe0a212b46 (patch)
treee8a21317b5af5a2d09543ffcb0fbf1f0a668b63a /arch/m68k/crt_arch.h
parent18f02c42a2b5397e8541f4663eb6ca00c1a806dd (diff)
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add m68k port
three ABIs are supported: the default with 68881 80-bit fpu format and results returned in floating point registers, softfloat-only with the same format, and coldfire fpu with IEEE single/double only. only the first is tested at all, and only under qemu which has fpu emulation bugs. basic functionality smoke tests have been performed for the most common arch-specific breakage via libc-test and qemu user-level emulation. some sysvipc failures remain, but are shared with other big endian archs and will be fixed separately.
Diffstat (limited to 'arch/m68k/crt_arch.h')
-rw-r--r--arch/m68k/crt_arch.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/m68k/crt_arch.h b/arch/m68k/crt_arch.h
new file mode 100644
index 00000000..48a42f29
--- /dev/null
+++ b/arch/m68k/crt_arch.h
@@ -0,0 +1,14 @@
+__asm__(
+".text\n"
+".weak _DYNAMIC \n"
+".hidden _DYNAMIC \n"
+".global " START "\n"
+START ":\n"
+" suba.l %fp,%fp \n"
+" movea.l %sp,%a0 \n"
+" lea _DYNAMIC-.-8,%a1 \n"
+" pea (%pc,%a1) \n"
+" pea (%a0) \n"
+" lea " START "_c-.-8,%a1 \n"
+" jsr (%pc,%a1) \n"
+);