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-rw-r--r--libc/sysdeps/linux/powerpc/powerpc64/sysdep.h264
1 files changed, 264 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/powerpc/powerpc64/sysdep.h b/libc/sysdeps/linux/powerpc/powerpc64/sysdep.h
new file mode 100644
index 000000000..467288576
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/powerpc64/sysdep.h
@@ -0,0 +1,264 @@
+/* Assembly macros for 64-bit PowerPC.
+ Copyright (C) 2002, 2003, 2004, 2006 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., 51 Franklin Street, Fifth Floor, Boston MA
+ 02110-1301 USA. */
+
+#ifdef __ELF__
+
+#ifdef __ASSEMBLER__
+
+/* Support macros for CALL_MCOUNT. */
+ .macro SAVE_ARG NARG
+ .if \NARG
+ SAVE_ARG \NARG-1
+ std 2+\NARG,-72+8*(\NARG)(1)
+ .endif
+ .endm
+
+ .macro REST_ARG NARG
+ .if \NARG
+ REST_ARG \NARG-1
+ ld 2+\NARG,40+8*(\NARG)(1)
+ .endif
+ .endm
+
+/* If compiled for profiling, call `_mcount' at the start of each function.
+ see ppc-mcount.S for more details. */
+ .macro CALL_MCOUNT NARG
+#ifdef PROF
+ mflr r0
+ SAVE_ARG \NARG
+ std r0,16(r1)
+ stdu r1,-112(r1)
+ bl JUMPTARGET (_mcount)
+ ld r0,128(r1)
+ REST_ARG \NARG
+ addi r1,r1,112
+ mtlr r0
+#endif
+ .endm
+
+#ifdef USE_PPC64_OVERLAPPING_OPD
+# define OPD_ENT(name) .quad BODY_LABEL (name), .TOC.@tocbase
+#else
+# define OPD_ENT(name) .quad BODY_LABEL (name), .TOC.@tocbase, 0
+#endif
+
+#define ENTRY_1(name) \
+ .section ".text"; \
+ .type BODY_LABEL(name),@function; \
+ .globl name; \
+ .section ".opd","aw"; \
+ .align 3; \
+name##: OPD_ENT (name); \
+ .previous;
+
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+# define DOT_LABEL(X) .##X
+# define BODY_LABEL(X) .##X
+# define ENTRY_2(name) \
+ .globl BODY_LABEL(name); \
+ ENTRY_1(name) \
+ .size name, 24;
+# define END_2(name) \
+ .size BODY_LABEL(name),.-BODY_LABEL(name);
+#else
+# define DOT_LABEL(X) X
+# define BODY_LABEL(X) .LY##X
+# define ENTRY_2(name) \
+ .type name,@function; \
+ ENTRY_1(name)
+# define END_2(name) \
+ .size name,.-BODY_LABEL(name); \
+ .size BODY_LABEL(name),.-BODY_LABEL(name);
+#endif
+
+#define ENTRY(name) \
+ ENTRY_2(name) \
+ .align ALIGNARG(2); \
+BODY_LABEL(name): \
+ cfi_startproc;
+
+#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^alignt boundary. */
+#define EALIGN(name, alignt, words) \
+ ENTRY_2(name) \
+ .align ALIGNARG(alignt); \
+ EALIGN_W_##words; \
+BODY_LABEL(name): \
+ cfi_startproc;
+
+/* 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)-BODY_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)-BODY_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) \
+ cfi_endproc; \
+ TRACEBACK(name) \
+ END_2(name)
+
+/* This form supports more informative traceback tables */
+#define END_GEN_TB(name,mask) \
+ cfi_endproc; \
+ TRACEBACK_MASK(name,mask) \
+ END_2(name)
+
+#define DO_CALL(syscall) \
+ li 0,syscall; \
+ sc
+
+/* ppc64 is always PIC */
+#undef JUMPTARGET
+#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)
+
+#define PSEUDO_NOERRNO(name, syscall_name, args) \
+ .section ".text"; \
+ ENTRY (name) \
+ DO_CALL (SYS_ify (syscall_name));
+
+#define PSEUDO_RET_NOERRNO \
+ blr
+
+#define ret_NOERRNO PSEUDO_RET_NOERRNO
+
+#undef PSEUDO_END_NOERRNO
+#define PSEUDO_END_NOERRNO(name) \
+ END (name)
+
+#define PSEUDO_ERRVAL(name, syscall_name, args) \
+ .section ".text"; \
+ ENTRY (name) \
+ DO_CALL (SYS_ify (syscall_name));
+
+#define PSEUDO_RET_ERRVAL \
+ blr
+
+#define ret_ERRVAL PSEUDO_RET_ERRVAL
+
+#undef PSEUDO_END_ERRVAL
+#define PSEUDO_END_ERRVAL(name) \
+ END (name)
+
+#else /* !__ASSEMBLER__ */
+
+#ifdef USE_PPC64_OVERLAPPING_OPD
+# define OPD_ENT(name) ".quad " BODY_PREFIX #name ", .TOC.@tocbase;"
+#else
+# define OPD_ENT(name) ".quad " BODY_PREFIX #name ", .TOC.@tocbase, 0;"
+#endif
+
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+# define DOT_PREFIX "."
+# define BODY_PREFIX "."
+# define ENTRY_2(name) \
+ ".globl " BODY_PREFIX #name ";\n" \
+ ".size " #name ", 24;"
+# define END_2(name) \
+ ".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
+#else
+# define DOT_PREFIX ""
+# define BODY_PREFIX ".LY"
+# define ENTRY_2(name) ".type " #name ",@function;"
+# define END_2(name) \
+ ".size " #name ",.-" BODY_PREFIX #name ";\n" \
+ ".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
+#endif
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* __ELF__ */