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man page for getisax

getisax(2)							   System Calls 							getisax(2)

NAME
getisax - extract valid instruction set extensions SYNOPSIS
#include <sys/auxv.h> uint_t getisax(uint32_t *array, uint_t n); DESCRIPTION
The getisax() function sets the vector array of n 32-bit integers to contain the bits from the AV_xxx_yyy namespace of the given instruc- tion set architecture. Values for AV_xxx_yyy are as follows: SPARC AV_SPARC_MUL32 32x32-bit smul/umul is efficient AV_SPARC_DIV32 32x32-bit sdiv/udiv is efficient AV_SPARC_FSMULD fsmuld instruction is efficient AV_SPARC_V8PLUS V9 instructions available to 32-bit apps AV_SPARC_POPC popc instruction is efficient AV_SPARC_VIS VIS instruction set is supported AV_SPARC_VIS2 IS2 instruction set is supported x86 AV_386_FPU x87-style floating point AV_386_TSC rdtsc instruction AV_386_CX8 cmpxchg8b instruction AV_386_SEP sysenter and sysexit AV_386_AMD_SYSC AMD's syscall and sysret AV_386_CMOV conditional move instructions AV_386_MMX MMX instructions AV_386_AMD_MMX AMD's MMX instructions AV_386_AMD_3DNow AMD's 3Dnow! instructions AV_386_AMD_3DNowx AMD's 3Dnow! extended instructions AV_386_FXSR fxsave and fxrstor AV_386_SSE SSE instructions and regs AV_386_SSE2 SSE2 instructions and regs AV_386_PAUSE use pause instruction (in spin loops) AV_386_SSE3 SSE3 instructions and regs AV_386_MON monitor/mwait instructions RETURN VALUES
The getisax() function returns the number of array elements that contain non-zero values. EXAMPLES
Example 1: Use getisax() to determine if the SSE2 instruction set is present. In the following example, if the message is written, the SSE2 instruction set is present and fully supportred by the operating system. uint_t ui; (void) getisax(&ui, 1); if (ui & AV_386_SSE2) printf("SSE2 instruction set extension is present.\n"); ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
isainfo(1), ld(1), pargs(1), attributes(5) Linker and Libraries Guide SPARC Assembly Language Reference Manual x86 Assembly Language Reference Manual SunOS 5.10 4 Oct 2004 getisax(2)

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