Date: Fri, 7 Jun 2013 21:23:11 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r251510 - head/sys/arm/include Message-ID: <201306072123.r57LNBT4065204@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: andrew Date: Fri Jun 7 21:23:11 2013 New Revision: 251510 URL: http://svnweb.freebsd.org/changeset/base/251510 Log: Reduce the difference to NetBSD. * Stop pretending we support anything other than ELF by removing code surrounded by #ifdef __ELF__ ... #endif. * Remove _JB_MAGIC_SETJMP and _JB_MAGIC__SETJMP, they are defined in setjmp.h, which is able to be included from asm. * Fix the spelling of dependent. * Rename END _END and add END and ASEND to complement ENTRY and ASENTRY respectively * Add macros to simplify accessing the Global Offset Table, some of these will be used in the upcoming update to the setjmp functions. Modified: head/sys/arm/include/asm.h Modified: head/sys/arm/include/asm.h ============================================================================== --- head/sys/arm/include/asm.h Fri Jun 7 21:13:28 2013 (r251509) +++ head/sys/arm/include/asm.h Fri Jun 7 21:23:11 2013 (r251510) @@ -40,22 +40,9 @@ #define _MACHINE_ASM_H_ #include <sys/cdefs.h> -#ifdef __ELF__ -# define _C_LABEL(x) x -#else -# ifdef __STDC__ -# define _C_LABEL(x) _ ## x -# else -# define _C_LABEL(x) _/**/x -# endif -#endif +#define _C_LABEL(x) x #define _ASM_LABEL(x) x -#ifndef _JB_MAGIC__SETJMP -#define _JB_MAGIC__SETJMP 0x4278f500 -#define _JB_MAGIC_SETJMP 0x4278f501 -#endif - #define I32_bit (1 << 7) /* IRQ disable */ #define F32_bit (1 << 6) /* FIQ disable */ @@ -79,7 +66,7 @@ /* * gas/arm uses @ as a single comment character and thus cannot be used here * Instead it recognised the # instead of an @ symbols in .type directives - * We define a couple of macros so that assembly code will not be dependant + * We define a couple of macros so that assembly code will not be dependent * on one or the other. */ #define _ASM_TYPE_FUNCTION #function @@ -88,7 +75,7 @@ #define _ENTRY(x) \ .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: _FNSTART -#define END(x) .size x, . - x; _FNEND +#define _END(x) .size x, . - x; _FNEND #ifdef GPROF # define _PROF_PROLOGUE \ @@ -99,20 +86,41 @@ #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE #define ENTRY_NP(y) _ENTRY(_C_LABEL(y)) +#define END(y) _END(_C_LABEL(y)) #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y)) +#define ASEND(y) _END(_ASM_LABEL(y)) #define ASMSTR .asciz -#if defined(__ELF__) && defined(PIC) +#if defined(PIC) +#define PLT_SYM(x) PIC_SYM(x, PLT) +#define GOT_SYM(x) PIC_SYM(x, GOT) +#define GOT_GET(x,got,sym) \ + ldr x, sym; \ + ldr x, [x, got] +#define GOT_INIT(got,gotsym,pclabel) \ + ldr got, gotsym; \ + add got, got, pc; \ + pclabel: +#define GOT_INITSYM(gotsym,pclabel) \ + gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (pclabel+4)) + #ifdef __STDC__ #define PIC_SYM(x,y) x ## ( ## y ## ) #else #define PIC_SYM(x,y) x/**/(/**/y/**/) #endif + #else +#define PLT_SYM(x) x +#define GOT_SYM(x) x +#define GOT_GET(x,got,sym) \ + ldr x, sym; +#define GOT_INIT(got,gotsym,pclabel) +#define GOT_INITSYM(gotsym,pclabel) #define PIC_SYM(x,y) x -#endif +#endif /* PIC */ #undef __FBSDID #if !defined(lint) && !defined(STRIP_FBSDID) @@ -122,24 +130,18 @@ #endif -#ifdef __ELF__ #define WEAK_ALIAS(alias,sym) \ .weak alias; \ alias = sym -#endif #ifdef __STDC__ #define WARN_REFERENCES(sym,msg) \ .stabs msg ## ,30,0,0,0 ; \ .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0 -#elif defined(__ELF__) -#define WARN_REFERENCES(sym,msg) \ - .stabs msg,30,0,0,0 ; \ - .stabs __STRING(sym),1,0,0,0 #else #define WARN_REFERENCES(sym,msg) \ .stabs msg,30,0,0,0 ; \ - .stabs __STRING(_/**/sym),1,0,0,0 + .stabs __STRING(sym),1,0,0,0 #endif /* __STDC__ */ /* Exactly one of the __ARM_ARCH_*__ macros will be defined by the compiler. */
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201306072123.r57LNBT4065204>