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SUSE:SLE-12-SP5:GA
glibc-utils
0001-S390-Fix-utf32-to-utf8-handling-of-low-sur...
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File 0001-S390-Fix-utf32-to-utf8-handling-of-low-surrogates-di.patch of Package glibc-utils
2016-05-25 Stefan Liebler <stli@linux.vnet.ibm.com> * sysdeps/s390/utf8-utf32-z9.c: Disable cu41 instruction and report an error in case of a value in range of an utf16 low surrogate. Index: glibc-2.22/sysdeps/s390/utf8-utf32-z9.c =================================================================== --- glibc-2.22.orig/sysdeps/s390/utf8-utf32-z9.c +++ glibc-2.22/sysdeps/s390/utf8-utf32-z9.c @@ -572,28 +572,6 @@ __from_utf8_loop_resolver (unsigned long strong_alias (__from_utf8_loop_c_single, __from_utf8_loop_single) - -/* Conversion from UTF-32 internal/BE to UTF-8. */ -#define BODY_TO_HW(ASM) \ - { \ - ASM; \ - if (__glibc_likely (inptr == inend) \ - || result == __GCONV_FULL_OUTPUT) \ - break; \ - if (inptr + 4 > inend) \ - { \ - result = __GCONV_INCOMPLETE_INPUT; \ - break; \ - } \ - STANDARD_TO_LOOP_ERR_HANDLER (4); \ - } - -/* The hardware routine uses the S/390 cu41 instruction. */ -#define BODY_TO_ETF3EH BODY_TO_HW (HARDWARE_CONVERT ("cu41 %0, %1")) - -/* The hardware routine uses the S/390 vector and cu41 instructions. */ -#define BODY_TO_VX BODY_TO_HW (HW_TO_VX) - /* The software routine mimics the S/390 cu41 instruction. */ #define BODY_TO_C \ { \ @@ -632,7 +610,7 @@ strong_alias (__from_utf8_loop_c_single, result = __GCONV_FULL_OUTPUT; \ break; \ } \ - if (wc >= 0xd800 && wc < 0xdc00) \ + if (wc >= 0xd800 && wc <= 0xdfff) \ { \ /* Do not accept UTF-16 surrogates. */ \ result = __GCONV_ILLEGAL_INPUT; \ @@ -679,13 +657,12 @@ strong_alias (__from_utf8_loop_c_single, inptr += 4; \ } -#define HW_TO_VX \ +/* The hardware routine uses the S/390 vector instructions. */ +#define BODY_TO_VX \ { \ - register const unsigned char* pInput asm ("8") = inptr; \ - register size_t inlen asm ("9") = inend - inptr; \ - register unsigned char* pOutput asm ("10") = outptr; \ - register size_t outlen asm("11") = outend - outptr; \ - unsigned long tmp, tmp2; \ + size_t inlen = inend - inptr; \ + size_t outlen = outend - outptr; \ + unsigned long tmp, tmp2, tmp3; \ asm volatile (".machine push\n\t" \ ".machine \"z13\"\n\t" \ ".machinemode \"zarch_nohighgprs\"\n\t" \ @@ -696,10 +673,10 @@ strong_alias (__from_utf8_loop_c_single, CONVERT_32BIT_SIZE_T ([R_INLEN]) \ CONVERT_32BIT_SIZE_T ([R_OUTLEN]) \ /* Loop which handles UTF-32 chars <=0x7f. */ \ - "0: clgijl %[R_INLEN],64,20f\n\t" \ - " clgijl %[R_OUTLEN],16,20f\n\t" \ + "0: clgijl %[R_INLEN],64,2f\n\t" \ + " clgijl %[R_OUTLEN],16,2f\n\t" \ "1: vlm %%v16,%%v19,0(%[R_IN])\n\t" \ - " lghi %[R_TMP],0\n\t" \ + " lghi %[R_TMP2],0\n\t" \ /* Shorten to byte values. */ \ " vpkf %%v23,%%v16,%%v17\n\t" \ " vpkf %%v24,%%v18,%%v19\n\t" \ @@ -719,41 +696,116 @@ strong_alias (__from_utf8_loop_c_single, " aghi %[R_OUTLEN],-16\n\t" \ " la %[R_IN],64(%[R_IN])\n\t" \ " la %[R_OUT],16(%[R_OUT])\n\t" \ - " clgijl %[R_INLEN],64,20f\n\t" \ - " clgijl %[R_OUTLEN],16,20f\n\t" \ + " clgijl %[R_INLEN],64,2f\n\t" \ + " clgijl %[R_OUTLEN],16,2f\n\t" \ " j 1b\n\t" \ /* Found a value > 0x7f. */ \ - "13: ahi %[R_TMP],4\n\t" \ - "12: ahi %[R_TMP],4\n\t" \ - "11: ahi %[R_TMP],4\n\t" \ - "10: vlgvb %[R_I],%%v22,7\n\t" \ - " srlg %[R_I],%[R_I],2\n\t" \ - " agr %[R_I],%[R_TMP]\n\t" \ - " je 20f\n\t" \ + "13: ahi %[R_TMP2],4\n\t" \ + "12: ahi %[R_TMP2],4\n\t" \ + "11: ahi %[R_TMP2],4\n\t" \ + "10: vlgvb %[R_TMP],%%v22,7\n\t" \ + " srlg %[R_TMP],%[R_TMP],2\n\t" \ + " agr %[R_TMP],%[R_TMP2]\n\t" \ + " je 16f\n\t" \ /* Store characters before invalid one... */ \ - " slgr %[R_OUTLEN],%[R_I]\n\t" \ - "15: aghi %[R_I],-1\n\t" \ - " vstl %%v23,%[R_I],0(%[R_OUT])\n\t" \ + " slgr %[R_OUTLEN],%[R_TMP]\n\t" \ + "15: aghi %[R_TMP],-1\n\t" \ + " vstl %%v23,%[R_TMP],0(%[R_OUT])\n\t" \ /* ... and update pointers. */ \ - " aghi %[R_I],1\n\t" \ - " la %[R_OUT],0(%[R_I],%[R_OUT])\n\t" \ - " sllg %[R_I],%[R_I],2\n\t" \ - " la %[R_IN],0(%[R_I],%[R_IN])\n\t" \ - " slgr %[R_INLEN],%[R_I]\n\t" \ - /* Handle multibyte utf8-char with convert instruction. */ \ - "20: cu41 %[R_OUT],%[R_IN]\n\t" \ - " jo 0b\n\t" /* Try vector implemenation again. */ \ - " lochil %[R_RES],%[RES_OUT_FULL]\n\t" /* cc == 1. */ \ - " lochih %[R_RES],%[RES_IN_ILL]\n\t" /* cc == 2. */ \ + " aghi %[R_TMP],1\n\t" \ + " la %[R_OUT],0(%[R_TMP],%[R_OUT])\n\t" \ + " sllg %[R_TMP2],%[R_TMP],2\n\t" \ + " la %[R_IN],0(%[R_TMP2],%[R_IN])\n\t" \ + " slgr %[R_INLEN],%[R_TMP2]\n\t" \ + /* Calculate remaining uint32_t values in loaded vrs. */ \ + "16: lghi %[R_TMP2],16\n\t" \ + " sgr %[R_TMP2],%[R_TMP]\n\t" \ + " l %[R_TMP],0(%[R_IN])\n\t" \ + " aghi %[R_INLEN],-4\n\t" \ + " j 22f\n\t" \ + /* Handle remaining bytes. */ \ + "2: clgije %[R_INLEN],0,99f\n\t" \ + " clgijl %[R_INLEN],4,92f\n\t" \ + /* Calculate remaining uint32_t values in inptr. */ \ + " srlg %[R_TMP2],%[R_INLEN],2\n\t" \ + /* Handle multibyte utf8-char. */ \ + "20: l %[R_TMP],0(%[R_IN])\n\t" \ + " aghi %[R_INLEN],-4\n\t" \ + /* Test if ch is 1byte UTF-8 char. */ \ + "21: clijh %[R_TMP],0x7f,22f\n\t" \ + /* Handle 1-byte UTF-8 char. */ \ + "31: slgfi %[R_OUTLEN],1\n\t" \ + " jl 90f \n\t" \ + " stc %[R_TMP],0(%[R_OUT])\n\t" \ + " la %[R_IN],4(%[R_IN])\n\t" \ + " la %[R_OUT],1(%[R_OUT])\n\t" \ + " brctg %[R_TMP2],20b\n\t" \ + " j 0b\n\t" /* Switch to vx-loop. */ \ + /* Test if ch is 2byte UTF-8 char. */ \ + "22: clfi %[R_TMP],0x7ff\n\t" \ + " jh 23f\n\t" \ + /* Handle 2-byte UTF-8 char. */ \ + "32: slgfi %[R_OUTLEN],2\n\t" \ + " jl 90f \n\t" \ + " llill %[R_TMP3],0xc080\n\t" \ + " risbgn %[R_TMP3],%[R_TMP],51,55,2\n\t" /* 1. byte. */ \ + " risbgn %[R_TMP3],%[R_TMP],58,63,0\n\t" /* 2. byte. */ \ + " sth %[R_TMP3],0(%[R_OUT])\n\t" \ + " la %[R_IN],4(%[R_IN])\n\t" \ + " la %[R_OUT],2(%[R_OUT])\n\t" \ + " brctg %[R_TMP2],20b\n\t" \ + " j 0b\n\t" /* Switch to vx-loop. */ \ + /* Test if ch is 3-byte UTF-8 char. */ \ + "23: clfi %[R_TMP],0xffff\n\t" \ + " jh 24f\n\t" \ + /* Handle 3-byte UTF-8 char. */ \ + "33: slgfi %[R_OUTLEN],3\n\t" \ + " jl 90f \n\t" \ + " llilf %[R_TMP3],0xe08080\n\t" \ + " risbgn %[R_TMP3],%[R_TMP],44,47,4\n\t" /* 1. byte. */ \ + " risbgn %[R_TMP3],%[R_TMP],50,55,2\n\t" /* 2. byte. */ \ + " risbgn %[R_TMP3],%[R_TMP],58,63,0\n\t" /* 3. byte. */ \ + /* Test if ch is a UTF-16 surrogate: ch & 0xf800 == 0xd800 */ \ + " nilf %[R_TMP],0xf800\n\t" \ + " clfi %[R_TMP],0xd800\n\t" \ + " je 91f\n\t" /* Do not accept UTF-16 surrogates. */ \ + " stcm %[R_TMP3],7,0(%[R_OUT])\n\t" \ + " la %[R_IN],4(%[R_IN])\n\t" \ + " la %[R_OUT],3(%[R_OUT])\n\t" \ + " brctg %[R_TMP2],20b\n\t" \ + " j 0b\n\t" /* Switch to vx-loop. */ \ + /* Test if ch is 4-byte UTF-8 char. */ \ + "24: clfi %[R_TMP],0x10ffff\n\t" \ + " jh 91f\n\t" /* ch > 0x10ffff is not allowed! */ \ + /* Handle 4-byte UTF-8 char. */ \ + "34: slgfi %[R_OUTLEN],4\n\t" \ + " jl 90f \n\t" \ + " llilf %[R_TMP3],0xf0808080\n\t" \ + " risbgn %[R_TMP3],%[R_TMP],37,39,6\n\t" /* 1. byte. */ \ + " risbgn %[R_TMP3],%[R_TMP],42,47,4\n\t" /* 2. byte. */ \ + " risbgn %[R_TMP3],%[R_TMP],50,55,2\n\t" /* 3. byte. */ \ + " risbgn %[R_TMP3],%[R_TMP],58,63,0\n\t" /* 4. byte. */ \ + " st %[R_TMP3],0(%[R_OUT])\n\t" \ + " la %[R_IN],4(%[R_IN])\n\t" \ + " la %[R_OUT],4(%[R_OUT])\n\t" \ + " brctg %[R_TMP2],20b\n\t" \ + " j 0b\n\t" /* Switch to vx-loop. */ \ + "92: lghi %[R_RES],%[RES_IN_FULL]\n\t" \ + " j 99f\n\t" \ + "91: lghi %[R_RES],%[RES_IN_ILL]\n\t" \ + " j 99f\n\t" \ + "90: lghi %[R_RES],%[RES_OUT_FULL]\n\t" \ + "99: \n\t" \ ".machine pop" \ - : /* outputs */ [R_IN] "+a" (pInput) \ - , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (pOutput) \ - , [R_OUTLEN] "+d" (outlen), [R_TMP] "=d" (tmp) \ - , [R_I] "=a" (tmp2) \ + : /* outputs */ [R_IN] "+a" (inptr) \ + , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (outptr) \ + , [R_OUTLEN] "+d" (outlen), [R_TMP] "=a" (tmp) \ + , [R_TMP2] "=a" (tmp2), [R_TMP3] "=d" (tmp3) \ , [R_RES] "+d" (result) \ : /* inputs */ \ [RES_OUT_FULL] "i" (__GCONV_FULL_OUTPUT) \ , [RES_IN_ILL] "i" (__GCONV_ILLEGAL_INPUT) \ + , [RES_IN_FULL] "i" (__GCONV_INCOMPLETE_INPUT) \ : /* clobber list */ "memory", "cc" \ ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v17") \ ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19") \ @@ -761,8 +813,11 @@ strong_alias (__from_utf8_loop_c_single, ASM_CLOBBER_VR ("v22") ASM_CLOBBER_VR ("v23") \ ASM_CLOBBER_VR ("v24") \ ); \ - inptr = pInput; \ - outptr = pOutput; \ + if (__glibc_likely (inptr == inend) \ + || result != __GCONV_ILLEGAL_INPUT) \ + break; \ + \ + STANDARD_TO_LOOP_ERR_HANDLER (4); \ } /* Generate loop-function with software routing. */ @@ -774,15 +829,6 @@ strong_alias (__from_utf8_loop_c_single, #define LOOP_NEED_FLAGS #include <iconv/loop.c> -/* Generate loop-function with hardware utf-convert instruction. */ -#define MIN_NEEDED_INPUT MIN_NEEDED_TO -#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM -#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM -#define LOOPFCT __to_utf8_loop_etf3eh -#define LOOP_NEED_FLAGS -#define BODY BODY_TO_ETF3EH -#include <iconv/loop.c> - #if defined HAVE_S390_VX_ASM_SUPPORT /* Generate loop-function with hardware vector and utf-convert instructions. */ # define MIN_NEEDED_INPUT MIN_NEEDED_TO @@ -807,10 +853,6 @@ __to_utf8_loop_resolver (unsigned long i return __to_utf8_loop_vx; else #endif - if (dl_hwcap & HWCAP_S390_ZARCH && dl_hwcap & HWCAP_S390_HIGH_GPRS - && dl_hwcap & HWCAP_S390_ETF3EH) - return __to_utf8_loop_etf3eh; - else return __to_utf8_loop_c; }
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