From e3dec33ba03ef7080a39444388a01e59135bb3aa Mon Sep 17 00:00:00 2001 From: Khem Raj Date: Wed, 5 May 2010 22:50:19 -0700 Subject: powerpc: Add TLS and NPTL support Signed-off-by: Khem Raj Signed-off-by: Bernhard Reutner-Fischer --- libc/sysdeps/linux/powerpc/powerpc64/sysdep.h | 264 ++++++++++++++++++++++++++ 1 file changed, 264 insertions(+) create mode 100644 libc/sysdeps/linux/powerpc/powerpc64/sysdep.h (limited to 'libc/sysdeps/linux/powerpc/powerpc64') 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__ */ -- cgit v1.2.3