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Diffstat (limited to 'testsuite/ifunc.h')
| -rw-r--r-- | testsuite/ifunc.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/testsuite/ifunc.h b/testsuite/ifunc.h new file mode 100644 index 0000000..8507f19 --- /dev/null +++ b/testsuite/ifunc.h @@ -0,0 +1,92 @@ +#ifndef PICKNO +# define PICKNO 1 +#endif +#if PICKNO == 2 +# define PICK(fn1, fn2) #fn2 +#else +# define PICK(fn1, fn2) #fn1 +#endif +#ifdef __x86_64__ +# define IFUNC_ASM(fn) "\tleaq " fn "(%rip), %rax\n\tretq\n" +#elif defined __i386__ +# ifdef __PIC__ +# define IFUNC_ASM(fn) "\tcall 1f\n1:\tpopl %ecx\n" \ + "\taddl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ecx\n" \ + "\tleal " fn "@GOTOFF(%ecx), %eax\n\tret\n" +# else +# define IFUNC_ASM(fn) "\tmovl $" fn ", %eax\n\tret\n" +# endif +#elif defined __powerpc__ +# define IFUNC_ASM(fn) "\tmflr 12\n\tbcl 20,31,1f\n" \ + "\t1:mflr 3\n\tmtlr 12\n\taddis 3,3, " fn \ + "-1b@ha\n\taddi 3,3," fn "-1b@l\n\tblr\n" +# if defined __powerpc64__ +# define IFUNC_DECL(name, hidden, fn1, fn2) \ +asm (".text\n" \ + "\t.globl " #name "\n" \ + "\t" hidden " " #name "\n" \ + "\t.type " #name ", @gnu_indirect_function\n" \ + "\t.section .opd,\"aw\"\n" \ + "\t.align 3\n" \ + #name ":\n" \ + "\t.quad .L." #name ",.TOC.@tocbase,0\n" \ + "\t.previous\n" \ + ".L." #name ":\n" \ + IFUNC_ASM (PICK (fn1, fn2)) \ + "\t.size " #name ", .-.L" #name "\n") +# endif +#elif defined __s390x__ +# define IFUNC_ASM(fn) "\tlarl %r2," fn "\n" \ + "\tbr %r14\n" +#elif defined __s390__ +# define IFUNC_ASM(fn) "\t" \ + "\tst %r12,48(%r15)\n" \ + "\tbasr %r5,0\n" \ + "1:\tl %r12,3f-1b(%r5)\n" \ + "\tl %r1,2f-1b(%r5)\n" \ + "\tla %r12,0(%r12,%r5)\n" \ + "\tla %r2,0(%r1,%r12)\n" \ + "\tl %r12,48(%r15)\n" \ + "\tbr %r14\n" \ + "\t.align 4\n" \ + "2:\t.long " fn "@GOTOFF\n" \ + "3:\t.long _GLOBAL_OFFSET_TABLE_-1b\n" +elif defined __arm__ +# ifdef __thumb__ +# define PIPE_OFFSET "4" +# else +# define PIPE_OFFSET "8" +# endif +# define IFUNC_ASM(fn) \ + "\tldr r0, .L" fn "\n" \ + "1:\tadd r0, pc, r0\n" \ + "\tmov pc, lr\n" \ + ".L" fn ": .long " fn " - 1b - " PIPE_OFFSET "\n" +# define IFUNC_DECL(name, hidden, fn1, fn2) \ +asm (".text\n" \ + "\t.globl " #name "\n" \ + "\t" hidden " " #name "\n" \ + "\t.type " #name ", %gnu_indirect_function\n" \ + #name ":\n" \ + IFUNC_ASM (PICK (fn1, fn2)) \ + "\t.size " #name ", .-" #name "\n") +#else +# error Architecture not supported +#endif +#ifndef IFUNC_DECL +#define IFUNC_DECL(name, hidden, fn1, fn2) \ +asm (".text\n" \ + "\t.globl " #name "\n" \ + "\t" hidden " " #name "\n" \ + "\t.type " #name ", @gnu_indirect_function\n" \ + #name ":\n" \ + IFUNC_ASM (PICK (fn1, fn2)) \ + "\t.size " #name ", .-" #name "\n") +#endif +#define IFUNC(name, hidden, fn1, fn2) \ +extern __typeof (fn1) fn1 __attribute__((used)); \ +extern __typeof (fn2) fn2 __attribute__((used)); \ +extern __typeof (fn1) name; \ +IFUNC_DECL (name, hidden, fn1, fn2) +#define IFUNC_LOCAL(name, fn1, fn2) IFUNC(name, ".hidden", fn1, fn2) +#define IFUNC_GLOBAL(name, fn1, fn2) IFUNC(name, ".globl", fn1, fn2) |