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/* Assembler-independent definitions for an Intel 386 running
Interactive Unix System V. Specifically, this is for recent versions
that support POSIX. */
/* Use crt1.o, not crt0.o, as a startup file, and crtn.o as a closing file. */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shlib:%{posix:%{pg:mcrtp1.o%s}%{!pg:%{p:mcrtp1.o%s}%{!p:crtp1.o%s}}}\
%{Xp:%{pg:mcrtp1.o%s}%{!pg:%{p:mcrtp1.o%s}%{!p:crtp1.o%s}}}\
%{!posix:%{!Xp:%{pg:mcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}\
%{p:-L/lib/libp} %{pg:-L/lib/libp}}}}\
%{shlib:%{Xp:crtp1.o%s}%{posix:crtp1.o%s}%{!posix:%{!Xp:crt1.o%s}}}\
crtbegin.o%s"
#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
/* Library spec */
#undef LIB_SPEC
#define LIB_SPEC "%{shlib:-lc_s} %{posix:-lcposix} %{Xp:-lcposix} -lc -lg"
#undef CPP_SPEC
#define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} %{Xp:-D_POSIX_SOURCE}"
/* ISC 2.2 uses `char' for `wchar_t'. */
#undef WCHAR_TYPE
#define WCHAR_TYPE "char"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE BITS_PER_UNIT
#if 0
/* This is apparently not true: ISC versions up to 3.0, at least, use
the standard calling sequence in which the called function pops the
extra arg. */
/* caller has to pop the extra argument passed to functions that return
structures. */
#undef RETURN_POPS_ARGS
#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) \
((FUNDECL) && TREE_CODE (FUNDECL) == IDENTIFIER_NODE ? 0 \
: (TARGET_RTD \
&& (TYPE_ARG_TYPES (FUNTYPE) == 0 \
|| (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \
== void_type_node))) ? (SIZE) \
: 0)
/* On other 386 systems, the last line looks like this:
: (aggregate_value_p (TREE_TYPE (FUNTYPE))) ? GET_MODE_SIZE (Pmode) : 0) */
#endif
/* Handle #pragma pack and #pragma weak. */
#define HANDLE_SYSV_PRAGMA
/* By default, target has a 80387, uses IEEE compatible arithmetic,
and returns float values in the 387, ie,
(TARGET_80387 | TARGET_FLOAT_RETURNS_IN_80387)
ISC's software emulation of a 387 fails to handle the `fucomp'
opcode. fucomp is only used when generating IEEE compliant code.
So don't make TARGET_IEEE_FP default for ISC. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_80387 | MASK_FLOAT_RETURNS)
/* The ISC 2.0.2 software FPU emulator apparently can't handle
80-bit XFmode insns, so don't generate them. */
#undef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE 64
/* The ISC assembler does not like a .file directive with a name
longer than 14 characters. Truncating it will not permit
debugging to work properly, but at least we won't get an error
message. */
#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
do { \
int len = strlen (main_input_filename); \
char *na = main_input_filename + len; \
char shorter[15]; \
/* NA gets MAIN_INPUT_FILENAME sans directory names. */\
while (na > main_input_filename) \
{ \
if (na[-1] == '/') \
break; \
na--; \
} \
strncpy (shorter, na, 14); \
shorter[14] = 0; \
fprintf (FILE, "\t.file\t"); \
output_quoted_string (FILE, shorter); \
fprintf (FILE, "\n"); \
} while (0)
/* Work around assembler forward label references generated in exception
handling code. */
#define DWARF2_UNWIND_INFO 0
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