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authorRoland McGrath <roland@gnu.org>2002-09-20 23:46:03 +0000
committerRoland McGrath <roland@gnu.org>2002-09-20 23:46:03 +0000
commitb80a3db02e5163f5af236df7cce78bd65e8c6941 (patch)
treec3de7e027886be6c1fb6037314c2b95c320ac051 /sysdeps/powerpc/powerpc64/sysdep.h
parent7f4dce05c20b5461582a729ef64f26ecc93f365e (diff)
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* sysdeps/powerpc/sysdep.h: Remove powerpc32 specific macros.
	* sysdeps/powerpc/powerpc32/sysdep.h: New file.  Define powerpc32
	specific macros copied from sysdeps/powerpc/sysdep.h.
	* sysdeps/powerpc/powerpc64/sysdep.h: New file.  Define powerpc64
	specific macros.
	* sysdeps/unix/powerpc/sysdep.h: Include <bits/wordsize.h>.
	[__WORDSIZE==64]: Include sysdeps/powerpc/powerpc64/sysdep.h.
	[!__WORDSIZE==64]: Include sysdeps/powerpc/powerpc32/sysdep.h.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/sysdep.h')
-rw-r--r--sysdeps/powerpc/powerpc64/sysdep.h233
1 files changed, 233 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/sysdep.h b/sysdeps/powerpc/powerpc64/sysdep.h
new file mode 100644
index 0000000000..6a50517bf4
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/sysdep.h
@@ -0,0 +1,233 @@
+/* Assembly macros for 64-bit PowerPC.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifdef __ASSEMBLER__
+
+#include <sysdeps/powerpc/sysdep.h>
+
+#ifdef __ELF__
+/* If compiled for profiling, call `_mcount' at the start of each function.
+   see ppc-mcount.S for more details.  */
+#ifdef	PROF
+/* The mcount code relies on a the return address being on the stack
+   to locate our caller and so it can restore it; so store one just
+   for its benefit.  */
+#ifdef PIC
+#ifdef SYSV_ELF_PROFILING
+#define CALL_MCOUNT      \
+  .pushsection;          \
+  .section ".data";      \
+  .align ALIGNARG(2);    \
+0:  .long  0;            \
+  .previous;              \
+  mflr  r0;              \
+  std   r0,16(r1);        \
+  ld    r0,0b@got(r2);    \
+  bl    JUMPTARGET(_mcount);
+#else /* SYSV_ELF_PROFILING */
+#define CALL_MCOUNT      \
+  mflr  r0;              \
+  std   r0,16(r1);       \
+  bl    JUMPTARGET(_mcount);
+#endif /* SYSV_ELF_PROFILING */
+#else  /* PIC */
+#ifdef SYSV_ELF_PROFILING
+#define CALL_MCOUNT      \
+  .pushsection;          \
+  .section ".data";      \
+  .align ALIGNARG(2);    \
+0:  .long  0;            \
+  .previous;              \
+  mflr  r0;              \
+  std   r0,16(r1);        \
+  ld    r0,0b@got(r2);    \
+  bl    JUMPTARGET(_mcount);
+#else /* SYSV_ELF_PROFILING */
+#define CALL_MCOUNT  \
+  mflr  r0;          \
+  std   r0,16(r1);    \
+  bl    JUMPTARGET(_mcount);
+#endif /* SYSV_ELF_PROFILING */
+#endif /* PIC */
+#else  /* PROF */
+#define CALL_MCOUNT		/* Do nothing.  */
+#endif /* PROF */
+
+#define DOT_LABEL(X) .##X
+
+#define ENTRY(name)	\
+	.section	".text"; \
+	.align ALIGNARG(2); \
+	.globl DOT_LABEL(name); \
+	.type DOT_LABEL(name),@function ; \
+	.globl name; \
+	.section	".opd","aw"; \
+name##: ; \
+	.quad DOT_LABEL(name) ; \
+	.quad .TOC.@tocbase, 0; \
+	.previous; \
+DOT_LABEL(name):
+
+
+#define EALIGN_W_0  /* No words to insert.  */
+#define EALIGN_W_1  nop
+#define EALIGN_W_2  nop;nop
+#define EALIGN_W_3  nop;nop;nop
+#define EALIGN_W_4  EALIGN_W_3;nop
+#define EALIGN_W_5  EALIGN_W_4;nop
+#define EALIGN_W_6  EALIGN_W_5;nop
+#define EALIGN_W_7  EALIGN_W_6;nop
+
+/* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes
+   past a 2^align boundary.  */
+#ifdef PROF
+#define EALIGN(name, alignt, words) \
+	.section	".text"; \
+	.globl DOT_LABEL(name); \
+	.type DOT_LABEL(name),@function ; \
+	.globl name; \
+	.section	".opd","aw"; \
+name##: ; \
+	.quad DOT_LABEL(name) ; \
+	.quad .TOC.@tocbase, 0; \
+	.previous; \
+	.align ALIGNARG(alignt); \
+  EALIGN_W_##words;	\
+DOT_LABEL(name):		\
+  CALL_MCOUNT  \
+  b 0f; \
+  .align ALIGNARG(alignt); \
+  EALIGN_W_##words; \
+  0:
+#else /* PROF */
+#define EALIGN(name, alignt, words) \
+	.section	".text"; \
+	.globl DOT_LABEL(name); \
+	.type DOT_LABEL(name),@function ; \
+	.globl name; \
+	.section	".opd","aw"; \
+name##: ; \
+	.quad DOT_LABEL(name) ; \
+	.quad .TOC.@tocbase, 0; \
+	.previous; \
+	.align ALIGNARG(alignt); \
+  EALIGN_W_##words; \
+DOT_LABEL(name):
+#endif
+
+/* Local labels stripped out by the linker.  */
+#undef L
+#define L(x) .L##x
+
+#define tostring(s) #s
+#define stringify(s) tostring(s)
+#define XGLUE(a,b) a##b
+#define GLUE(a,b) XGLUE(a,b)
+#define LT_LABEL(name) GLUE(.LT,name)
+#define LT_LABELSUFFIX(name,suffix) GLUE(GLUE(.LT,name),suffix)
+
+/* Support Traceback tables */
+#define TB_ASM			0x000c000000000000
+#define TB_GLOBALLINK	0x0000800000000000
+#define TB_IS_EPROL		0x0000400000000000
+#define TB_HAS_TBOFF	0x0000200000000000
+#define TB_INT_PROC		0x0000100000000000
+#define TB_HAS_CTL		0x0000080000000000
+#define TB_TOCLESS		0x0000040000000000
+#define TB_FP_PRESENT	0x0000020000000000
+#define TB_LOG_ABORT	0x0000010000000000
+#define TB_INT_HANDL	0x0000008000000000
+#define TB_NAME_PRESENT	0x0000004000000000
+#define TB_USES_ALLOCA	0x0000002000000000
+#define TB_SAVES_CR		0x0000000200000000
+#define TB_SAVES_LR		0x0000000100000000
+#define TB_STORES_BC	0x0000000080000000
+#define TB_FIXUP		0x0000000040000000
+#define TB_FP_SAVED(fprs)	(((fprs) & 0x3f) << 24)
+#define TB_GPR_SAVED(gprs)	(((fprs) & 0x3f) << 16)
+#define TB_FIXEDPARMS(parms)	(((parms) & 0xff) << 8)
+#define TB_FLOATPARMS(parms)	(((parms) & 0x7f) << 1)
+#define TB_PARMSONSTK	0x0000000000000001
+
+#define PPC_HIGHER(v) (((v) >> 32) & 0xffff)
+#define TB_DEFAULT	TB_ASM | TB_HAS_TBOFF | TB_NAME_PRESENT
+
+#define TRACEBACK(name) \
+LT_LABEL(name): ; \
+	.long	0 ; \
+	.quad	TB_DEFAULT ; \
+	.long	LT_LABEL(name)-DOT_LABEL(name) ; \
+	.short	LT_LABELSUFFIX(name,_name_end)-LT_LABELSUFFIX(name,_name_start) ; \
+LT_LABELSUFFIX(name,_name_start): ;\
+	.ascii	stringify(name) ; \
+LT_LABELSUFFIX(name,_name_end): ; \
+	.align	2 ;
+
+#define TRACEBACK_MASK(name,mask) \
+LT_LABEL(name): ; \
+	.long	0 ; \
+	.quad	TB_DEFAULT | mask ; \
+	.long	LT_LABEL(name)-DOT_LABEL(name) ; \
+	.short	LT_LABELSUFFIX(name,_name_end)-LT_LABELSUFFIX(name,_name_start) ; \
+LT_LABELSUFFIX(name,_name_start): ;\
+	.ascii	stringify(name) ; \
+LT_LABELSUFFIX(name,_name_end): ; \
+	.align	2 ;
+
+/* END generates Traceback tables */
+#undef	END
+#define END(name) \
+  TRACEBACK(name)	\
+  ASM_SIZE_DIRECTIVE(name)
+
+/* This form supports more informative traceback tables */
+#define END_GEN_TB(name,mask)	\
+  TRACEBACK_MASK(name,mask)	\
+  ASM_SIZE_DIRECTIVE(name)
+
+
+#define DO_CALL(syscall) \
+    li 0,syscall; \
+    sc
+
+/* ppc64 is always PIC */
+#define JUMPTARGET(name) DOT_LABEL(name)
+
+#define PSEUDO(name, syscall_name, args) \
+  .section ".text";	\
+  ENTRY (name) \
+  DO_CALL (SYS_ify (syscall_name));
+
+#define PSEUDO_RET \
+    bnslr; \
+    b JUMPTARGET(__syscall_error)
+
+#define ret PSEUDO_RET
+
+#undef	PSEUDO_END
+#define	PSEUDO_END(name) \
+  END (name)
+
+/* Label in text section.  */
+/* ppc64 function descriptors which requires . notation */
+#define C_TEXT(name) .##name
+
+#endif /* __ELF__ */
+
+#endif	/* __ASSEMBLER__ */