177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoCompiler-RT 277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao================================ 377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoThis directory and its subdirectories contain source code for the compiler 577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosupport routines. 677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoCompiler-RT is open source software. You may freely distribute it under the 877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoterms of the license agreement found in LICENSE.txt. 977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 1077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao================================ 1177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 1277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoThis is a replacement library for libgcc. Each function is contained 1377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoin its own file. Each function has a corresponding unit test under 1477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotest/Unit. 1577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 1677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoA rudimentary script to test each file is in the file called 1777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotest/Unit/test. 1877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 1977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoHere is the specification for this library: 2077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 2177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaohttp://gcc.gnu.org/onlinedocs/gccint/Libgcc.html#Libgcc 2277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 2377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoHere is a synopsis of the contents of this library: 2477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 2577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotypedef int si_int; 2677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotypedef unsigned su_int; 2777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 2877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotypedef long long di_int; 2977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotypedef unsigned long long du_int; 3077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 3177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Integral bit manipulation 3277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 3377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __ashldi3(di_int a, si_int b); // a << b 3477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __ashlti3(ti_int a, si_int b); // a << b 3577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 3677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __ashrdi3(di_int a, si_int b); // a >> b arithmetic (sign fill) 3777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __ashrti3(ti_int a, si_int b); // a >> b arithmetic (sign fill) 3877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __lshrdi3(di_int a, si_int b); // a >> b logical (zero fill) 3977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __lshrti3(ti_int a, si_int b); // a >> b logical (zero fill) 4077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 4177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __clzsi2(si_int a); // count leading zeros 4277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __clzdi2(di_int a); // count leading zeros 4377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __clzti2(ti_int a); // count leading zeros 4477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __ctzsi2(si_int a); // count trailing zeros 4577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __ctzdi2(di_int a); // count trailing zeros 4677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __ctzti2(ti_int a); // count trailing zeros 4777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 4877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __ffsdi2(di_int a); // find least significant 1 bit 4977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __ffsti2(ti_int a); // find least significant 1 bit 5077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 5177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __paritysi2(si_int a); // bit parity 5277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __paritydi2(di_int a); // bit parity 5377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __parityti2(ti_int a); // bit parity 5477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 5577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __popcountsi2(si_int a); // bit population 5677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __popcountdi2(di_int a); // bit population 5777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __popcountti2(ti_int a); // bit population 5877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 5977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaouint32_t __bswapsi2(uint32_t a); // a byteswapped, arm only 6077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaouint64_t __bswapdi2(uint64_t a); // a byteswapped, arm only 6177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 6277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Integral arithmetic 6377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 6477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __negdi2 (di_int a); // -a 6577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __negti2 (ti_int a); // -a 6677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __muldi3 (di_int a, di_int b); // a * b 6777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __multi3 (ti_int a, ti_int b); // a * b 6877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __divsi3 (si_int a, si_int b); // a / b signed 6977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __divdi3 (di_int a, di_int b); // a / b signed 7077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __divti3 (ti_int a, ti_int b); // a / b signed 7177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosu_int __udivsi3 (su_int n, su_int d); // a / b unsigned 7277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodu_int __udivdi3 (du_int a, du_int b); // a / b unsigned 7377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotu_int __udivti3 (tu_int a, tu_int b); // a / b unsigned 7477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __modsi3 (si_int a, si_int b); // a % b signed 7577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __moddi3 (di_int a, di_int b); // a % b signed 7677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __modti3 (ti_int a, ti_int b); // a % b signed 7777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosu_int __umodsi3 (su_int a, su_int b); // a % b unsigned 7877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodu_int __umoddi3 (du_int a, du_int b); // a % b unsigned 7977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotu_int __umodti3 (tu_int a, tu_int b); // a % b unsigned 8077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodu_int __udivmoddi4(du_int a, du_int b, du_int* rem); // a / b, *rem = a % b 8177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotu_int __udivmodti4(tu_int a, tu_int b, tu_int* rem); // a / b, *rem = a % b 8277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 8377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Integral arithmetic with trapping overflow 8477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 8577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __absvsi2(si_int a); // abs(a) 8677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __absvdi2(di_int a); // abs(a) 8777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __absvti2(ti_int a); // abs(a) 8877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 8977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __negvsi2(si_int a); // -a 9077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __negvdi2(di_int a); // -a 9177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __negvti2(ti_int a); // -a 9277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 9377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __addvsi3(si_int a, si_int b); // a + b 9477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __addvdi3(di_int a, di_int b); // a + b 9577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __addvti3(ti_int a, ti_int b); // a + b 9677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 9777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __subvsi3(si_int a, si_int b); // a - b 9877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __subvdi3(di_int a, di_int b); // a - b 9977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __subvti3(ti_int a, ti_int b); // a - b 10077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 10177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __mulvsi3(si_int a, si_int b); // a * b 10277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __mulvdi3(di_int a, di_int b); // a * b 10377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __mulvti3(ti_int a, ti_int b); // a * b 10477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 10577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Integral comparison: a < b -> 0 10677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// a == b -> 1 10777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// a > b -> 2 10877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 10977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __cmpdi2 (di_int a, di_int b); 11077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __cmpti2 (ti_int a, ti_int b); 11177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __ucmpdi2(du_int a, du_int b); 11277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosi_int __ucmpti2(tu_int a, tu_int b); 11377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 11477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Integral / floating point conversion 11577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 11677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __fixsfdi( float a); 11777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __fixdfdi( double a); 11877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodi_int __fixxfdi(long double a); 11977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 12077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __fixsfti( float a); 12177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __fixdfti( double a); 12277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoti_int __fixxfti(long double a); 12377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaouint64_t __fixtfdi(long double input); // ppc only, doesn't match documentation 12477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 12577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosu_int __fixunssfsi( float a); 12677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosu_int __fixunsdfsi( double a); 12777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosu_int __fixunsxfsi(long double a); 12877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 12977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodu_int __fixunssfdi( float a); 13077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodu_int __fixunsdfdi( double a); 13177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodu_int __fixunsxfdi(long double a); 13277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 13377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotu_int __fixunssfti( float a); 13477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotu_int __fixunsdfti( double a); 13577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaotu_int __fixunsxfti(long double a); 13677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaouint64_t __fixunstfdi(long double input); // ppc only 13777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 13877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __floatdisf(di_int a); 13977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __floatdidf(di_int a); 14077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __floatdixf(di_int a); 14177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __floatditf(int64_t a); // ppc only 14277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 14377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __floattisf(ti_int a); 14477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __floattidf(ti_int a); 14577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __floattixf(ti_int a); 14677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 14777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __floatundisf(du_int a); 14877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __floatundidf(du_int a); 14977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __floatundixf(du_int a); 15077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __floatunditf(uint64_t a); // ppc only 15177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 15277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __floatuntisf(tu_int a); 15377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __floatuntidf(tu_int a); 15477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __floatuntixf(tu_int a); 15577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 15677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Floating point raised to integer power 15777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 15877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __powisf2( float a, si_int b); // a ^ b 15977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __powidf2( double a, si_int b); // a ^ b 16077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __powixf2(long double a, si_int b); // a ^ b 16177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __powitf2(long double a, si_int b); // ppc only, a ^ b 16277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 16377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Complex arithmetic 16477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 16577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// (a + ib) * (c + id) 16677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 16777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao float _Complex __mulsc3( float a, float b, float c, float d); 16877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao double _Complex __muldc3(double a, double b, double c, double d); 16977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double _Complex __mulxc3(long double a, long double b, 17077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao long double c, long double d); 17177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double _Complex __multc3(long double a, long double b, 17277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao long double c, long double d); // ppc only 17377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 17477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// (a + ib) / (c + id) 17577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 17677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao float _Complex __divsc3( float a, float b, float c, float d); 17777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao double _Complex __divdc3(double a, double b, double c, double d); 17877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double _Complex __divxc3(long double a, long double b, 17977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao long double c, long double d); 18077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double _Complex __divtc3(long double a, long double b, 18177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao long double c, long double d); // ppc only 18277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 18377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 18477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Runtime support 18577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 18677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// __clear_cache() is used to tell process that new instructions have been 18777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// written to an address range. Necessary on processors that do not have 18877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// a unified instuction and data cache. 18977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaovoid __clear_cache(void* start, void* end); 19077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 19177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// __enable_execute_stack() is used with nested functions when a trampoline 19277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// function is written onto the stack and that page range needs to be made 19377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// executable. 19477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaovoid __enable_execute_stack(void* addr); 19577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 19677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// __gcc_personality_v0() is normally only called by the system unwinder. 19777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// C code (as opposed to C++) normally does not need a personality function 19877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// because there are no catch clauses or destructors to be run. But there 19977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// is a C language extension __attribute__((cleanup(func))) which marks local 20077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// variables as needing the cleanup function "func" to be run when the 20177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// variable goes out of scope. That includes when an exception is thrown, 20277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// so a personality handler is needed. 20377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao_Unwind_Reason_Code __gcc_personality_v0(int version, _Unwind_Action actions, 20477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao uint64_t exceptionClass, struct _Unwind_Exception* exceptionObject, 20577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao _Unwind_Context_t context); 20677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 20777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// for use with some implementations of assert() in <assert.h> 20877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaovoid __eprintf(const char* format, const char* assertion_expression, 20977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao const char* line, const char* file); 21077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 21177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 21277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 21377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Power PC specific functions 21477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 21577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// There is no C interface to the saveFP/restFP functions. They are helper 21677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// functions called by the prolog and epilog of functions that need to save 21777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// a number of non-volatile float point registers. 21877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaosaveFP 21977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaorestFP 22077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 22177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// PowerPC has a standard template for trampoline functions. This function 22277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// generates a custom trampoline function with the specific realFunc 22377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// and localsPtr values. 22477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaovoid __trampoline_setup(uint32_t* trampOnStack, int trampSizeAllocated, 22577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao const void* realFunc, void* localsPtr); 22677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 22777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// adds two 128-bit double-double precision values ( x + y ) 22877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __gcc_qadd(long double x, long double y); 22977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 23077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// subtracts two 128-bit double-double precision values ( x - y ) 23177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __gcc_qsub(long double x, long double y); 23277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 23377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// multiples two 128-bit double-double precision values ( x * y ) 23477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __gcc_qmul(long double x, long double y); 23577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 23677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// divides two 128-bit double-double precision values ( x / y ) 23777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaolong double __gcc_qdiv(long double a, long double b); 23877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 23977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 24077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// ARM specific functions 24177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 24277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// There is no C interface to the switch* functions. These helper functions 24377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// are only needed by Thumb1 code for efficient switch table generation. 24477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoswitch16 24577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoswitch32 24677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoswitch8 24777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoswitchu8 24877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 24977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// There is no C interface to the *_vfp_d8_d15_regs functions. There are 25077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// called in the prolog and epilog of Thumb1 functions. When the C++ ABI use 25177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// SJLJ for exceptions, each function with a catch clause or destuctors needs 25277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// to save and restore all registers in it prolog and epliog. But there is 25377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// no way to access vector and high float registers from thumb1 code, so the 25477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// compiler must add call outs to these helper functions in the prolog and 25577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// epilog. 25677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaorestore_vfp_d8_d15_regs 25777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaosave_vfp_d8_d15_regs 25877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 25977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 26077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Note: long ago ARM processors did not have floating point hardware support. 26177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Floating point was done in software and floating point parameters were 26277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// passed in integer registers. When hardware support was added for floating 26377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// point, new *vfp functions were added to do the same operations but with 26477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// floating point parameters in floating point registers. 26577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 26677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 26777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Undocumented functions 26877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 26977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __addsf3vfp(float a, float b); // Appears to return a + b 27077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __adddf3vfp(double a, double b); // Appears to return a + b 27177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __divsf3vfp(float a, float b); // Appears to return a / b 27277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __divdf3vfp(double a, double b); // Appears to return a / b 27377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __eqsf2vfp(float a, float b); // Appears to return one 27477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // iff a == b and neither is NaN. 27577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __eqdf2vfp(double a, double b); // Appears to return one 27677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // iff a == b and neither is NaN. 27777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __extendsfdf2vfp(float a); // Appears to convert from 27877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // float to double. 27977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __fixdfsivfp(double a); // Appears to convert from 28077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // double to int. 28177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __fixsfsivfp(float a); // Appears to convert from 28277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // float to int. 28377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaounsigned int __fixunssfsivfp(float a); // Appears to convert from 28477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // float to unsigned int. 28577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaounsigned int __fixunsdfsivfp(double a); // Appears to convert from 28677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // double to unsigned int. 28777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __floatsidfvfp(int a); // Appears to convert from 28877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // int to double. 28977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __floatsisfvfp(int a); // Appears to convert from 29077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // int to float. 29177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __floatunssidfvfp(unsigned int a); // Appears to convert from 29277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // unisgned int to double. 29377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __floatunssisfvfp(unsigned int a); // Appears to convert from 29477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // unisgned int to float. 29577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __gedf2vfp(double a, double b); // Appears to return __gedf2 29677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a >= b) 29777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __gesf2vfp(float a, float b); // Appears to return __gesf2 29877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a >= b) 29977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __gtdf2vfp(double a, double b); // Appears to return __gtdf2 30077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a > b) 30177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __gtsf2vfp(float a, float b); // Appears to return __gtsf2 30277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a > b) 30377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __ledf2vfp(double a, double b); // Appears to return __ledf2 30477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a <= b) 30577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __lesf2vfp(float a, float b); // Appears to return __lesf2 30677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a <= b) 30777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __ltdf2vfp(double a, double b); // Appears to return __ltdf2 30877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a < b) 30977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __ltsf2vfp(float a, float b); // Appears to return __ltsf2 31077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a < b) 31177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __muldf3vfp(double a, double b); // Appears to return a * b 31277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __mulsf3vfp(float a, float b); // Appears to return a * b 31377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __nedf2vfp(double a, double b); // Appears to return __nedf2 31477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // (a != b) 31577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __negdf2vfp(double a); // Appears to return -a 31677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __negsf2vfp(float a); // Appears to return -a 31777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __negsf2vfp(float a); // Appears to return -a 31877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaodouble __subdf3vfp(double a, double b); // Appears to return a - b 31977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __subsf3vfp(float a, float b); // Appears to return a - b 32077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaofloat __truncdfsf2vfp(double a); // Appears to convert from 32177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao // double to float. 32277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __unorddf2vfp(double a, double b); // Appears to return __unorddf2 32377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoint __unordsf2vfp(float a, float b); // Appears to return __unordsf2 32477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 32577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 32677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoPreconditions are listed for each function at the definition when there are any. 32777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoAny preconditions reflect the specification at 32877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaohttp://gcc.gnu.org/onlinedocs/gccint/Libgcc.html#Libgcc. 32977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 33077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoAssumptions are listed in "int_lib.h", and in individual files. Where possible 33177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liaoassumptions are checked at compile time. 332