From 0a9873aa22731077fad295a4aad2fc1f390c8ac7 Mon Sep 17 00:00:00 2001 From: Shinichiro Hamaji Date: Tue, 2 Dec 2008 03:19:25 +0900 Subject: Add support of x86-64. Most change was done in #ifdef TCC_TARGET_X86_64. So, nothing should be broken by this change. Summary of current status of x86-64 support: - produces x86-64 object files and executables. - the x86-64 code generator is based on x86's. -- for long long integers, we use 64bit registers instead of tcc's generic implementation. -- for float or double, we use SSE. SSE registers are not utilized well (we only use xmm0 and xmm1). -- for long double, we use x87 FPU. - passes make test. - passes ./libtcc_test. - can compile tcc.c. The compiled tcc can compile tcc.c, too. (there should be some bugs since the binary size of tcc2 and tcc3 is differ where tcc tcc.c -o tcc2 and tcc2 tcc.c -o tcc3) - can compile links browser. It seems working. - not tested well. I tested this work only on my linux box with few programs. - calling convention of long-double-integer or struct is not exactly the same as GCC's x86-64 ABI. - implementation of tcc -run is naive (tcc -run tcctest.c works, but tcc -run tcc.c doesn't work). Relocating 64bit addresses seems to be not as simple as 32bit environments. - shared object support isn't unimplemented - no bounds checker support - some builtin functions such as __divdi3 aren't supported --- libtcc1.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'libtcc1.c') diff --git a/libtcc1.c b/libtcc1.c index 96bf22c..b079477 100644 --- a/libtcc1.c +++ b/libtcc1.c @@ -106,6 +106,9 @@ union float_long { long l; }; +/* XXX: we don't support several builtin supports for now */ +#ifndef __x86_64__ + /* XXX: use gcc/tcc intrinsic ? */ #if defined(__i386__) #define sub_ddmmss(sh, sl, ah, al, bh, bl) \ @@ -482,6 +485,8 @@ unsigned short __tcc_fpu_control = 0x137f; unsigned short __tcc_int_fpu_control = 0x137f | 0x0c00; #endif +#endif /* !__x86_64__ */ + /* XXX: fix tcc's code generator to do this instead */ float __floatundisf(unsigned long long a) { -- cgit v1.3.1