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Re: [PATCH 12/14] S390: Fix utf32 to utf16 handling of low surrogates (disable cu42).
- From: Stefan Liebler <stli at linux dot vnet dot ibm dot com>
- To: libc-alpha at sourceware dot org
- Date: Thu, 21 Apr 2016 16:50:22 +0200
- Subject: Re: [PATCH 12/14] S390: Fix utf32 to utf16 handling of low surrogates (disable cu42).
- Authentication-results: sourceware.org; auth=none
- References: <1456219278-5258-1-git-send-email-stli at linux dot vnet dot ibm dot com> <1456219278-5258-13-git-send-email-stli at linux dot vnet dot ibm dot com>
Here is an updated patch, where the labels in inline assemblies are
out-dented as suggested by Florian.
On 02/23/2016 10:21 AM, Stefan Liebler wrote:
According to the latest Unicode standard, a conversion from/to UTF-xx has
to report an error if the character value is in range of an utf16 surrogate
(0xd800..0xdfff). See https://sourceware.org/ml/libc-help/2015-12/msg00015.html.
Thus the cu42 instruction, which converts from utf32 to utf16, has to be
disabled because it does not report an error in case of a value in range of
a low surrogate (0xdc00..0xdfff). The etf3eh variant is removed and the c,
vector variant is adjusted to handle the value in range of an utf16 low
surrogate correctly.
ChangeLog:
* sysdeps/s390/utf16-utf32-z9.c: Disable cu42 instruction and report
an error in case of a value in range of an utf16 low surrogate.
---
sysdeps/s390/utf16-utf32-z9.c | 155 +++++++++++++++++-------------------------
1 file changed, 62 insertions(+), 93 deletions(-)
diff --git a/sysdeps/s390/utf16-utf32-z9.c b/sysdeps/s390/utf16-utf32-z9.c
index ecf06bd..70aa640 100644
--- a/sysdeps/s390/utf16-utf32-z9.c
+++ b/sysdeps/s390/utf16-utf32-z9.c
@@ -145,42 +145,6 @@ gconv_end (struct __gconv_step *data)
free (data->__data);
}
-/* The macro for the hardware loop. This is used for both
- directions. */
-#define HARDWARE_CONVERT(INSTRUCTION) \
- { \
- 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 cc = 0; \
- \
- __asm__ __volatile__ (".machine push \n\t" \
- ".machine \"z9-109\" \n\t" \
- ".machinemode \"zarch_nohighgprs\"\n\t" \
- "0: " INSTRUCTION " \n\t" \
- ".machine pop \n\t" \
- " jo 0b \n\t" \
- " ipm %2 \n" \
- : "+a" (pOutput), "+a" (pInput), "+d" (cc), \
- "+d" (outlen), "+d" (inlen) \
- : \
- : "cc", "memory"); \
- \
- inptr = pInput; \
- outptr = pOutput; \
- cc >>= 28; \
- \
- if (cc == 1) \
- { \
- result = __GCONV_FULL_OUTPUT; \
- } \
- else if (cc == 2) \
- { \
- result = __GCONV_ILLEGAL_INPUT; \
- } \
- }
-
#define PREPARE_LOOP \
enum direction dir = ((struct utf16_data *) step->__data)->dir; \
int emit_bom = ((struct utf16_data *) step->__data)->emit_bom; \
@@ -310,7 +274,7 @@ gconv_end (struct __gconv_step *data)
"slgr %[R_OUTLEN],%[R_TMP3]\n\t" \
/* Calculate remaining uint16_t values in loaded vrs. */ \
"12: lghi %[R_TMP2],16\n\t" \
- "sgr %[R_TMP2],%[R_TMP]\n\t" \
+ "slgr %[R_TMP2],%[R_TMP]\n\t" \
"srl %[R_TMP2],1\n\t" \
"llh %[R_TMP],0(%[R_IN])\n\t" \
"aghi %[R_OUTLEN],-4\n\t" \
@@ -437,7 +401,7 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
uint32_t c = get32 (inptr); \
\
if (__builtin_expect (c <= 0xd7ff, 1) \
- || (c >=0xdc00 && c <= 0xffff)) \
+ || (c > 0xdfff && c <= 0xffff)) \
{ \
/* Two UTF-16 chars. */ \
put16 (outptr, c); \
@@ -475,29 +439,10 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
inptr += 4; \
}
-#define BODY_TO_ETF3EH \
- { \
- HARDWARE_CONVERT ("cu42 %0, %1"); \
- \
- 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); \
- }
-
#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; \
+ 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" \
@@ -509,8 +454,8 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
CONVERT_32BIT_SIZE_T ([R_OUTLEN]) \
/* Loop which handles UTF-16 chars \
ch < 0xd800 || (ch > 0xdfff && ch < 0x10000). */ \
- "0: clgijl %[R_INLEN],32,20f\n\t" \
- "clgijl %[R_OUTLEN],16,20f\n\t" \
+ "0: clgijl %[R_INLEN],32,2f\n\t" \
+ "clgijl %[R_OUTLEN],16,2f\n\t" \
"1: vlm %%v16,%%v17,0(%[R_IN])\n\t" \
"lghi %[R_TMP2],0\n\t" \
/* Shorten to UTF-16. */ \
@@ -526,9 +471,15 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
"aghi %[R_INLEN],-32\n\t" \
"aghi %[R_OUTLEN],-16\n\t" \
"la %[R_OUT],16(%[R_OUT])\n\t" \
- "clgijl %[R_INLEN],32,20f\n\t" \
- "clgijl %[R_OUTLEN],16,20f\n\t" \
+ "clgijl %[R_INLEN],32,2f\n\t" \
+ "clgijl %[R_OUTLEN],16,2f\n\t" \
"j 1b\n\t" \
+ /* Calculate remaining uint32_t values in inptr. */ \
+ "2:\n\t" \
+ "clgije %[R_INLEN],0,99f\n\t" \
+ "clgijl %[R_INLEN],4,92f\n\t" \
+ "srlg %[R_TMP2],%[R_INLEN],2\n\t" \
+ "j 20f\n\t" \
/* Setup to check for ch >= 0xd800 && ch <= 0xdfff \
and check for ch >= 0x10000. (v30, v31) */ \
"9: .long 0xd800,0xdfff,0x10000,0x10000\n\t" \
@@ -540,21 +491,59 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
"agr %[R_TMP],%[R_TMP2]\n\t" \
"srlg %[R_TMP3],%[R_TMP],1\n\t" /* Number of out bytes. */ \
"ahik %[R_TMP2],%[R_TMP3],-1\n\t" /* Highest index to store. */ \
- "jl 20f\n\t" \
+ "jl 12f\n\t" \
"vstl %%v18,%[R_TMP2],0(%[R_OUT])\n\t" \
/* Update pointers. */ \
"la %[R_IN],0(%[R_TMP],%[R_IN])\n\t" \
"slgr %[R_INLEN],%[R_TMP]\n\t" \
"la %[R_OUT],0(%[R_TMP3],%[R_OUT])\n\t" \
"slgr %[R_OUTLEN],%[R_TMP3]\n\t" \
- /* Handles UTF16 surrogates with convert instruction. */ \
- "20: cu42 %[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. */ \
+ /* Calculate remaining uint32_t values in vrs. */ \
+ "12: lghi %[R_TMP2],8\n\t" \
+ "srlg %[R_TMP3],%[R_TMP3],1\n\t" \
+ "slgr %[R_TMP2],%[R_TMP3]\n\t" \
+ /* Handle remaining UTF-32 characters. */ \
+ "20: l %[R_TMP],0(%[R_IN])\n\t" \
+ "aghi %[R_INLEN],-4\n\t" \
+ /* Test if ch is 2byte UTF-16 char. */ \
+ "clfi %[R_TMP],0xffff\n\t" \
+ "jh 21f\n\t" \
+ /* Handle 2 byte UTF16 char. */ \
+ "lgr %[R_TMP3],%[R_TMP]\n\t" \
+ "nilf %[R_TMP],0xf800\n\t" \
+ "clfi %[R_TMP],0xd800\n\t" \
+ "je 91f\n\t" /* Do not accept UTF-16 surrogates. */ \
+ "slgfi %[R_OUTLEN],2\n\t" \
+ "jl 90f \n\t" \
+ "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 4byte UTF-16 char. */ \
+ "21: clfi %[R_TMP],0x10ffff\n\t" \
+ "jh 91f\n\t" /* ch > 0x10ffff is not allowed! */ \
+ /* Handle 4 byte UTF16 char. */ \
+ "slgfi %[R_OUTLEN],4\n\t" \
+ "jl 90f \n\t" \
+ "slfi %[R_TMP],0x10000\n\t" /* zabcd = uvwxy - 1. */ \
+ "llilf %[R_TMP3],0xd800dc00\n\t" \
+ "la %[R_IN],4(%[R_IN])\n\t" \
+ "risbgn %[R_TMP3],%[R_TMP],38,47,6\n\t" /* High surrogate. */ \
+ "risbgn %[R_TMP3],%[R_TMP],54,63,0\n\t" /* Low surrogate. */ \
+ "st %[R_TMP3],0(%[R_OUT])\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) \
+ : /* outputs */ [R_IN] "+a" (inptr) \
+ , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (outptr) \
, [R_OUTLEN] "+d" (outlen), [R_TMP] "=a" (tmp) \
, [R_TMP2] "=d" (tmp2), [R_TMP3] "=a" (tmp3) \
, [R_RES] "+d" (result) \
@@ -567,17 +556,10 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19") \
ASM_CLOBBER_VR ("v30") ASM_CLOBBER_VR ("v31") \
); \
- inptr = pInput; \
- outptr = pOutput; \
- \
if (__glibc_likely (inptr == inend) \
- || result == __GCONV_FULL_OUTPUT) \
+ || result != __GCONV_ILLEGAL_INPUT) \
break; \
- if (inptr + 4 > inend) \
- { \
- result = __GCONV_INCOMPLETE_INPUT; \
- break; \
- } \
+ \
STANDARD_TO_LOOP_ERR_HANDLER (4); \
}
@@ -590,15 +572,6 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
#define BODY BODY_TO_C
#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_utf16_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 instructions. */
# define MIN_NEEDED_INPUT MIN_NEEDED_TO
@@ -623,10 +596,6 @@ __to_utf16_loop_resolver (unsigned long int dl_hwcap)
return __to_utf16_loop_vx;
else
#endif
- if (dl_hwcap & HWCAP_S390_ZARCH && dl_hwcap & HWCAP_S390_HIGH_GPRS
- && dl_hwcap & HWCAP_S390_ETF3EH)
- return __to_utf16_loop_etf3eh;
- else
return __to_utf16_loop_c;
}
>From 9af543d67eca5e22c79c590ff82a0d517c9fb3bf Mon Sep 17 00:00:00 2001
From: Stefan Liebler <stli@linux.vnet.ibm.com>
Date: Thu, 21 Apr 2016 12:42:49 +0200
Subject: [PATCH 12/14] S390: Fix utf32 to utf16 handling of low surrogates
(disable cu42).
According to the latest Unicode standard, a conversion from/to UTF-xx has
to report an error if the character value is in range of an utf16 surrogate
(0xd800..0xdfff). See https://sourceware.org/ml/libc-help/2015-12/msg00015.html.
Thus the cu42 instruction, which converts from utf32 to utf16, has to be
disabled because it does not report an error in case of a value in range of
a low surrogate (0xdc00..0xdfff). The etf3eh variant is removed and the c,
vector variant is adjusted to handle the value in range of an utf16 low
surrogate correctly.
ChangeLog:
* sysdeps/s390/utf16-utf32-z9.c: Disable cu42 instruction and report
an error in case of a value in range of an utf16 low surrogate.
---
sysdeps/s390/utf16-utf32-z9.c | 155 +++++++++++++++++-------------------------
1 file changed, 62 insertions(+), 93 deletions(-)
diff --git a/sysdeps/s390/utf16-utf32-z9.c b/sysdeps/s390/utf16-utf32-z9.c
index 8d42ab8..5d2ac44 100644
--- a/sysdeps/s390/utf16-utf32-z9.c
+++ b/sysdeps/s390/utf16-utf32-z9.c
@@ -145,42 +145,6 @@ gconv_end (struct __gconv_step *data)
free (data->__data);
}
-/* The macro for the hardware loop. This is used for both
- directions. */
-#define HARDWARE_CONVERT(INSTRUCTION) \
- { \
- 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 cc = 0; \
- \
- __asm__ __volatile__ (".machine push \n\t" \
- ".machine \"z9-109\" \n\t" \
- ".machinemode \"zarch_nohighgprs\"\n\t" \
- "0: " INSTRUCTION " \n\t" \
- ".machine pop \n\t" \
- " jo 0b \n\t" \
- " ipm %2 \n" \
- : "+a" (pOutput), "+a" (pInput), "+d" (cc), \
- "+d" (outlen), "+d" (inlen) \
- : \
- : "cc", "memory"); \
- \
- inptr = pInput; \
- outptr = pOutput; \
- cc >>= 28; \
- \
- if (cc == 1) \
- { \
- result = __GCONV_FULL_OUTPUT; \
- } \
- else if (cc == 2) \
- { \
- result = __GCONV_ILLEGAL_INPUT; \
- } \
- }
-
#define PREPARE_LOOP \
enum direction dir = ((struct utf16_data *) step->__data)->dir; \
int emit_bom = ((struct utf16_data *) step->__data)->emit_bom; \
@@ -310,7 +274,7 @@ gconv_end (struct __gconv_step *data)
" slgr %[R_OUTLEN],%[R_TMP3]\n\t" \
/* Calculate remaining uint16_t values in loaded vrs. */ \
"12: lghi %[R_TMP2],16\n\t" \
- " sgr %[R_TMP2],%[R_TMP]\n\t" \
+ " slgr %[R_TMP2],%[R_TMP]\n\t" \
" srl %[R_TMP2],1\n\t" \
" llh %[R_TMP],0(%[R_IN])\n\t" \
" aghi %[R_OUTLEN],-4\n\t" \
@@ -437,7 +401,7 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
uint32_t c = get32 (inptr); \
\
if (__builtin_expect (c <= 0xd7ff, 1) \
- || (c >=0xdc00 && c <= 0xffff)) \
+ || (c > 0xdfff && c <= 0xffff)) \
{ \
/* Two UTF-16 chars. */ \
put16 (outptr, c); \
@@ -475,29 +439,10 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
inptr += 4; \
}
-#define BODY_TO_ETF3EH \
- { \
- HARDWARE_CONVERT ("cu42 %0, %1"); \
- \
- 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); \
- }
-
#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; \
+ 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" \
@@ -509,8 +454,8 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
CONVERT_32BIT_SIZE_T ([R_OUTLEN]) \
/* Loop which handles UTF-16 chars \
ch < 0xd800 || (ch > 0xdfff && ch < 0x10000). */ \
- "0: clgijl %[R_INLEN],32,20f\n\t" \
- " clgijl %[R_OUTLEN],16,20f\n\t" \
+ "0: clgijl %[R_INLEN],32,2f\n\t" \
+ " clgijl %[R_OUTLEN],16,2f\n\t" \
"1: vlm %%v16,%%v17,0(%[R_IN])\n\t" \
" lghi %[R_TMP2],0\n\t" \
/* Shorten to UTF-16. */ \
@@ -526,9 +471,15 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
" aghi %[R_INLEN],-32\n\t" \
" aghi %[R_OUTLEN],-16\n\t" \
" la %[R_OUT],16(%[R_OUT])\n\t" \
- " clgijl %[R_INLEN],32,20f\n\t" \
- " clgijl %[R_OUTLEN],16,20f\n\t" \
+ " clgijl %[R_INLEN],32,2f\n\t" \
+ " clgijl %[R_OUTLEN],16,2f\n\t" \
" j 1b\n\t" \
+ /* Calculate remaining uint32_t values in inptr. */ \
+ "2: \n\t" \
+ " clgije %[R_INLEN],0,99f\n\t" \
+ " clgijl %[R_INLEN],4,92f\n\t" \
+ " srlg %[R_TMP2],%[R_INLEN],2\n\t" \
+ " j 20f\n\t" \
/* Setup to check for ch >= 0xd800 && ch <= 0xdfff \
and check for ch >= 0x10000. (v30, v31) */ \
"9: .long 0xd800,0xdfff,0x10000,0x10000\n\t" \
@@ -540,21 +491,59 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
" agr %[R_TMP],%[R_TMP2]\n\t" \
" srlg %[R_TMP3],%[R_TMP],1\n\t" /* Number of out bytes. */ \
" ahik %[R_TMP2],%[R_TMP3],-1\n\t" /* Highest index to store. */ \
- " jl 20f\n\t" \
+ " jl 12f\n\t" \
" vstl %%v18,%[R_TMP2],0(%[R_OUT])\n\t" \
/* Update pointers. */ \
" la %[R_IN],0(%[R_TMP],%[R_IN])\n\t" \
" slgr %[R_INLEN],%[R_TMP]\n\t" \
" la %[R_OUT],0(%[R_TMP3],%[R_OUT])\n\t" \
" slgr %[R_OUTLEN],%[R_TMP3]\n\t" \
- /* Handles UTF16 surrogates with convert instruction. */ \
- "20: cu42 %[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. */ \
+ /* Calculate remaining uint32_t values in vrs. */ \
+ "12: lghi %[R_TMP2],8\n\t" \
+ " srlg %[R_TMP3],%[R_TMP3],1\n\t" \
+ " slgr %[R_TMP2],%[R_TMP3]\n\t" \
+ /* Handle remaining UTF-32 characters. */ \
+ "20: l %[R_TMP],0(%[R_IN])\n\t" \
+ " aghi %[R_INLEN],-4\n\t" \
+ /* Test if ch is 2byte UTF-16 char. */ \
+ " clfi %[R_TMP],0xffff\n\t" \
+ " jh 21f\n\t" \
+ /* Handle 2 byte UTF16 char. */ \
+ " lgr %[R_TMP3],%[R_TMP]\n\t" \
+ " nilf %[R_TMP],0xf800\n\t" \
+ " clfi %[R_TMP],0xd800\n\t" \
+ " je 91f\n\t" /* Do not accept UTF-16 surrogates. */ \
+ " slgfi %[R_OUTLEN],2\n\t" \
+ " jl 90f \n\t" \
+ " 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 4byte UTF-16 char. */ \
+ "21: clfi %[R_TMP],0x10ffff\n\t" \
+ " jh 91f\n\t" /* ch > 0x10ffff is not allowed! */ \
+ /* Handle 4 byte UTF16 char. */ \
+ " slgfi %[R_OUTLEN],4\n\t" \
+ " jl 90f \n\t" \
+ " slfi %[R_TMP],0x10000\n\t" /* zabcd = uvwxy - 1. */ \
+ " llilf %[R_TMP3],0xd800dc00\n\t" \
+ " la %[R_IN],4(%[R_IN])\n\t" \
+ " risbgn %[R_TMP3],%[R_TMP],38,47,6\n\t" /* High surrogate. */ \
+ " risbgn %[R_TMP3],%[R_TMP],54,63,0\n\t" /* Low surrogate. */ \
+ " st %[R_TMP3],0(%[R_OUT])\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) \
+ : /* outputs */ [R_IN] "+a" (inptr) \
+ , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (outptr) \
, [R_OUTLEN] "+d" (outlen), [R_TMP] "=a" (tmp) \
, [R_TMP2] "=d" (tmp2), [R_TMP3] "=a" (tmp3) \
, [R_RES] "+d" (result) \
@@ -567,17 +556,10 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19") \
ASM_CLOBBER_VR ("v30") ASM_CLOBBER_VR ("v31") \
); \
- inptr = pInput; \
- outptr = pOutput; \
- \
if (__glibc_likely (inptr == inend) \
- || result == __GCONV_FULL_OUTPUT) \
+ || result != __GCONV_ILLEGAL_INPUT) \
break; \
- if (inptr + 4 > inend) \
- { \
- result = __GCONV_INCOMPLETE_INPUT; \
- break; \
- } \
+ \
STANDARD_TO_LOOP_ERR_HANDLER (4); \
}
@@ -590,15 +572,6 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
#define BODY BODY_TO_C
#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_utf16_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 instructions. */
# define MIN_NEEDED_INPUT MIN_NEEDED_TO
@@ -623,10 +596,6 @@ __to_utf16_loop_resolver (unsigned long int dl_hwcap)
return __to_utf16_loop_vx;
else
#endif
- if (dl_hwcap & HWCAP_S390_ZARCH && dl_hwcap & HWCAP_S390_HIGH_GPRS
- && dl_hwcap & HWCAP_S390_ETF3EH)
- return __to_utf16_loop_etf3eh;
- else
return __to_utf16_loop_c;
}
--
2.5.5