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authorDavid S. Miller <davem@davemloft.net>2012-04-25 11:44:02 -0700
committerDavid S. Miller <davem@davemloft.net>2012-04-25 11:52:31 -0700
commitaab39a094e0f1b69d661999e3298972ef3060aa0 (patch)
treea0034dea687d53c45cc26f892562eafdaf3101bd /sysdeps/sparc/sysdep.h
parent2ed8cda226068bc3d0d735af79e876040717df30 (diff)
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Delete everything under sysdeps/unix/sparc/
	* sysdeps/unix/sparc/brk.S: Delete.
	* sysdeps/unix/sparc/dl-brk.S: Delete.
	* sysdeps/unix/sparc/pipe.S: Delete.
	* sysdeps/unix/sparc/sysdep.S: Delete.
	* sysdeps/unix/sparc/sysdep.h: Delete.
	* sysdeps/unix/sparc/vfork.S: Delete.
	* sysdeps/sparc/sysdep.h (SPARC_PIC_THUNK, SPARC_PIC_REG,
	SPARC_PIC_REG_LEAF, ENTRY, END, LOC): Define.
	* sysdeps/unix/sysv/linux/sparc/sysdep.h (ret, ret_NOERRNO,
	ret_ERRVAL, r0, r1, MOVE): Define.
	(JUMPTARGET): Remove.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Don't include
	sysdeps/unix/sparc/sysdep.h
	(ENTRY, END): Remove.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
Diffstat (limited to 'sysdeps/sparc/sysdep.h')
-rw-r--r--sysdeps/sparc/sysdep.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/sysdeps/sparc/sysdep.h b/sysdeps/sparc/sysdep.h
index 8a7546bec9..2702620be6 100644
--- a/sysdeps/sparc/sysdep.h
+++ b/sysdeps/sparc/sysdep.h
@@ -42,3 +42,53 @@
 #define HWCAP_SPARC_IMA		0x00400000
 #define HWCAP_SPARC_ASI_CACHE_SPARING \
 				0x00800000
+
+#ifdef	__ASSEMBLER__
+
+#define SPARC_PIC_THUNK(reg)						\
+	.ifndef __sparc_get_pc_thunk.reg;				\
+	.section .text.__sparc_get_pc_thunk.reg,"axG",@progbits,__sparc_get_pc_thunk.reg,comdat; \
+	.align	 32;							\
+	.weak	 __sparc_get_pc_thunk.reg;				\
+	.hidden	 __sparc_get_pc_thunk.reg;				\
+	.type	 __sparc_get_pc_thunk.reg, #function;			\
+__sparc_get_pc_thunk.reg:		   				\
+	jmp	%o7 + 8;						\
+	 add	%o7, %reg, %##reg;					\
+	.previous;							\
+	.endif;
+
+/* Even when v9 we use a call sequence instead of using "rd %pc" because
+   RDPC is extremely expensive and incurs a full pipeline flush.  */
+
+#define SETUP_PIC_REG(reg)						\
+	SPARC_PIC_THUNK(reg)						\
+	sethi	%hi(_GLOBAL_OFFSET_TABLE_-4), %##reg;			\
+	call	__sparc_get_pc_thunk.reg;				\
+	 or	%##reg, %lo(_GLOBAL_OFFSET_TABLE_+4), %##reg;
+
+#define SETUP_PIC_REG_LEAF(reg, tmp)					\
+	SPARC_PIC_THUNK(reg)						\
+	sethi	%hi(_GLOBAL_OFFSET_TABLE_-4), %##reg;			\
+	mov	%o7, %##tmp;		      				\
+	call	__sparc_get_pc_thunk.reg;				\
+	 or	%##reg, %lo(_GLOBAL_OFFSET_TABLE_+4), %##reg;		\
+	mov	%##tmp, %o7;
+
+#undef ENTRY
+#define ENTRY(name)			\
+	.align	4;			\
+	.global	C_SYMBOL_NAME(name);	\
+	.type	name, @function;	\
+C_LABEL(name)				\
+	cfi_startproc;
+
+#undef END
+#define END(name)			\
+	cfi_endproc;			\
+	.size name, . - name
+
+#undef LOC
+#define LOC(name)  .L##name
+
+#endif	/* __ASSEMBLER__ */