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[PATCH] ppc64 specific sysdep.h changes



2002-09-20  Steven Munroe  <sjmunroe@us.ibm.com>


	* sysdeps/powerpc/sysdep.h: Include <bits/wordsize.h>.
	[__WORDSIZE](CALL_MCOUNT, DOT_LABEL, ENTRY, EALIGN, TRACEBACK, 
	TRACEBACK_MASK, END, END_GEN_TB, DO_CALL, JUMPTARGET, PSEUDO
	PSEUDO_RET, C_TEXT): Add powerpc64 specific macros.

>>>>>> ppc64-sysdep.patch
diff -rupPN libc23-cvstip-20020918/sysdeps/powerpc/sysdep.h libc23/sysdeps/powerpc/sysdep.h
--- libc23-cvstip-20020918/sysdeps/powerpc/sysdep.h	Mon Nov  5 03:29:42 2001
+++ libc23/sysdeps/powerpc/sysdep.h	Fri Sep 20 14:49:33 2002
@@ -18,6 +18,7 @@
 
 #ifdef __ASSEMBLER__
 
+#include <bits/wordsize.h>
 /* Symbolic names for the registers.  The only portable way to write asm
    code is to use number but this produces really unreadable code.
    Therefore these symbolic names.  */
@@ -109,7 +110,219 @@
 #define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
 #define ASM_SIZE_DIRECTIVE(name) .size name,.-name
 
-/* If compiled for profiling, call `_mcount' at the start of each function.  */
+#if __WORDSIZE == 64
+/* Must be powerpc64.  */
+
+/* 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
+
+#else  /* Must be powerpc32.  */
+
+/* If compiled for profiling, call `_mcount' at the start of each 
+   function.  */
 #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
@@ -215,6 +428,8 @@
 
 /* Label in text section.  */
 #define C_TEXT(name) name
+
+#endif /* __WORDSIZE == 64 */
 
 #endif /* __ELF__ */
 
<<<<<< ppc64-sysdep.patch


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