diff options
Diffstat (limited to 'src/gallium/auxiliary/util')
| -rw-r--r-- | src/gallium/auxiliary/util/Makefile | 4 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/SConscript | 2 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/p_debug.c | 107 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/p_tile.h | 18 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_cpu_detect.c | 506 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_cpu_detect.h | 78 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_handle_table.c | 207 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_handle_table.h | 96 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_snprintf.c | 1478 |
9 files changed, 2484 insertions, 12 deletions
diff --git a/src/gallium/auxiliary/util/Makefile b/src/gallium/auxiliary/util/Makefile index 906a46d6b4..2abbe9500e 100644 --- a/src/gallium/auxiliary/util/Makefile +++ b/src/gallium/auxiliary/util/Makefile @@ -7,7 +7,9 @@ C_SOURCES = \ p_debug.c \ p_tile.c \ p_util.c \ - u_mm.c + u_handle_table.c \ + u_mm.c \ + u_snprintf.c include ../../Makefile.template diff --git a/src/gallium/auxiliary/util/SConscript b/src/gallium/auxiliary/util/SConscript index 4717941434..2030214aa7 100644 --- a/src/gallium/auxiliary/util/SConscript +++ b/src/gallium/auxiliary/util/SConscript @@ -6,7 +6,9 @@ util = env.ConvenienceLibrary( 'p_debug.c', 'p_tile.c', 'p_util.c', + 'u_handle_table.c', 'u_mm.c', + 'u_snprintf.c', ]) auxiliaries.insert(0, util) diff --git a/src/gallium/auxiliary/util/p_debug.c b/src/gallium/auxiliary/util/p_debug.c index b9607a6ba7..09cabdae25 100644 --- a/src/gallium/auxiliary/util/p_debug.c +++ b/src/gallium/auxiliary/util/p_debug.c @@ -36,14 +36,37 @@ #include <stdlib.h> #endif -#include "pipe/p_debug.h" #include "pipe/p_compiler.h" +#include "pipe/p_util.h" +#include "pipe/p_debug.h" + + +#ifdef WIN32 +static INLINE void +rpl_EngDebugPrint(const char *format, ...) +{ + va_list ap; + va_start(ap, format); + EngDebugPrint("", (PCHAR)format, ap); + va_end(ap); +} + +int rpl_vsnprintf(char *, size_t, const char *, va_list); +#endif void debug_vprintf(const char *format, va_list ap) { #ifdef WIN32 - EngDebugPrint("Gallium3D: ", (PCHAR)format, ap); +#ifndef WINCE + /* EngDebugPrint does not handle float point arguments, so we need to use + * our own vsnprintf implementation */ + char buf[512 + 1]; + rpl_vsnprintf(buf, sizeof(buf), format, ap); + rpl_EngDebugPrint("%s", buf); +#else + /* TODO: Implement debug print for WINCE */ +#endif #else vfprintf(stderr, format, ap); #endif @@ -59,18 +82,92 @@ void debug_printf(const char *format, ...) } -static INLINE void debug_abort(void) +/* TODO: implement a debug_abort that calls EngBugCheckEx on WIN32 */ + + +static INLINE void debug_break(void) { -#ifdef WIN32 +#if (defined(__i386__) || defined(__386__)) && defined(__GNUC__) + __asm("int3"); +#elif (defined(__i386__) || defined(__386__)) && defined(__MSC__) + _asm {int 3}; +#elif defined(WIN32) && !defined(WINCE) EngDebugBreak(); #else abort(); #endif } +#if defined(WIN32) +ULONG_PTR debug_config_file = 0; +void *mapped_config_file = 0; + +enum { + eAssertAbortEn = 0x1, +}; + +/* Check for aborts enabled. */ +static unsigned abort_en() +{ + if (!mapped_config_file) + { + /* Open an 8 byte file for configuration data. */ + mapped_config_file = EngMapFile(L"\\??\\c:\\gaDebug.cfg", 8, &debug_config_file); + } + /* An value of "0" (ascii) in the configuration file will clear the first 8 bits in the test byte. */ + /* An value of "1" (ascii) in the configuration file will set the first bit in the test byte. */ + /* An value of "2" (ascii) in the configuration file will set the second bit in the test byte. */ + return ((((char *)mapped_config_file)[0]) - 0x30) & eAssertAbortEn; +} +#else /* WIN32 */ +static unsigned abort_en() +{ + return !GETENV("GALLIUM_ABORT_ON_ASSERT"); +} +#endif void debug_assert_fail(const char *expr, const char *file, unsigned line) { debug_printf("%s:%i: Assertion `%s' failed.\n", file, line, expr); - debug_abort(); + if (abort_en()) + { + debug_break(); + } else + { + debug_printf("continuing...\n"); + } +} + + +#define DEBUG_MASK_TABLE_SIZE 256 + + +/** + * Mask hash table. + * + * For now we just take the lower bits of the key, and do no attempt to solve + * collisions. Use a proper hash table when we have dozens of drivers. + */ +static uint32_t debug_mask_table[DEBUG_MASK_TABLE_SIZE]; + + +void debug_mask_set(uint32_t uuid, uint32_t mask) +{ + unsigned hash = uuid & (DEBUG_MASK_TABLE_SIZE - 1); + debug_mask_table[hash] = mask; +} + + +uint32_t debug_mask_get(uint32_t uuid) +{ + unsigned hash = uuid & (DEBUG_MASK_TABLE_SIZE - 1); + return debug_mask_table[hash]; +} + + +void debug_mask_vprintf(uint32_t uuid, uint32_t what, const char *format, va_list ap) +{ + uint32_t mask = debug_mask_get(uuid); + if(mask & what) + debug_vprintf(format, ap); } diff --git a/src/gallium/auxiliary/util/p_tile.h b/src/gallium/auxiliary/util/p_tile.h index 318b6d11a6..fdc80a13b3 100644 --- a/src/gallium/auxiliary/util/p_tile.h +++ b/src/gallium/auxiliary/util/p_tile.h @@ -52,44 +52,50 @@ pipe_clip_tile(uint x, uint y, uint *w, uint *h, const struct pipe_surface *ps) return FALSE; } +#ifdef __cplusplus +extern "C" { +#endif -extern void +void pipe_get_tile_raw(struct pipe_context *pipe, struct pipe_surface *ps, uint x, uint y, uint w, uint h, void *p, int dst_stride); -extern void +void pipe_put_tile_raw(struct pipe_context *pipe, struct pipe_surface *ps, uint x, uint y, uint w, uint h, const void *p, int src_stride); -extern void +void pipe_get_tile_rgba(struct pipe_context *pipe, struct pipe_surface *ps, uint x, uint y, uint w, uint h, float *p); -extern void +void pipe_put_tile_rgba(struct pipe_context *pipe, struct pipe_surface *ps, uint x, uint y, uint w, uint h, const float *p); -extern void +void pipe_get_tile_z(struct pipe_context *pipe, struct pipe_surface *ps, uint x, uint y, uint w, uint h, uint *z); -extern void +void pipe_put_tile_z(struct pipe_context *pipe, struct pipe_surface *ps, uint x, uint y, uint w, uint h, const uint *z); +#ifdef __cplusplus +} +#endif #endif diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c new file mode 100644 index 0000000000..d9f2f8fc28 --- /dev/null +++ b/src/gallium/auxiliary/util/u_cpu_detect.c @@ -0,0 +1,506 @@ +/************************************************************************** + * + * Copyright 2008 Dennis Smit + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * AUTHORS, COPYRIGHT HOLDERS, AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* + * Based on the work of Eric Anholt <anholt@FreeBSD.org> + */ + +/* FIXME: clean this entire file up */ + +#include "u_cpu_detect.h" + +#ifdef __linux__ +#define OS_LINUX +#endif +#ifdef WIN32 +#define OS_WIN32 +#endif + +#if defined(ARCH_POWERPC) +#if defined(OS_DARWIN) +#include <sys/sysctl.h> +#else +#include <signal.h> +#include <setjmp.h> +#endif +#endif + +#if defined(OS_NETBSD) || defined(OS_OPENBSD) +#include <sys/param.h> +#include <sys/sysctl.h> +#include <machine/cpu.h> +#endif + +#if defined(OS_FREEBSD) +#include <sys/types.h> +#include <sys/sysctl.h> +#endif + +#if defined(OS_LINUX) +#include <signal.h> +#endif + +#if defined(OS_WIN32) +#include <windows.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> + + +static struct cpu_detect_caps __cpu_detect_caps; +static int __cpu_detect_initialized = 0; + +static int has_cpuid(void); +static int cpuid(unsigned int ax, unsigned int *p); + +/* The sigill handlers */ +#if defined(ARCH_X86) /* x86 (linux katmai handler check thing) */ +#if defined(OS_LINUX) && defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC) +static void sigill_handler_sse(int signal, struct sigcontext sc) +{ + /* Both the "xorps %%xmm0,%%xmm0" and "divps %xmm0,%%xmm1" + * instructions are 3 bytes long. We must increment the instruction + * pointer manually to avoid repeated execution of the offending + * instruction. + * + * If the SIGILL is caused by a divide-by-zero when unmasked + * exceptions aren't supported, the SIMD FPU status and control + * word will be restored at the end of the test, so we don't need + * to worry about doing it here. Besides, we may not be able to... + */ + sc.eip += 3; + + __cpu_detect_caps.hasSSE=0; +} + +static void sigfpe_handler_sse(int signal, struct sigcontext sc) +{ + if (sc.fpstate->magic != 0xffff) { + /* Our signal context has the extended FPU state, so reset the + * divide-by-zero exception mask and clear the divide-by-zero + * exception bit. + */ + sc.fpstate->mxcsr |= 0x00000200; + sc.fpstate->mxcsr &= 0xfffffffb; + } else { + /* If we ever get here, we're completely hosed. + */ + } +} +#endif +#endif /* OS_LINUX && _POSIX_SOURCE && X86_FXSR_MAGIC */ + +#if defined(OS_WIN32) +LONG CALLBACK win32_sig_handler_sse(EXCEPTION_POINTERS* ep) +{ + if(ep->ExceptionRecord->ExceptionCode==EXCEPTION_ILLEGAL_INSTRUCTION){ + ep->ContextRecord->Eip +=3; + __cpu_detect_caps.hasSSE=0; + return EXCEPTION_CONTINUE_EXECUTION; + } + return EXCEPTION_CONTINUE_SEARCH; +} +#endif /* OS_WIN32 */ + + +#if defined(ARCH_POWERPC) && !defined(OS_DARWIN) +static sigjmp_buf __lv_powerpc_jmpbuf; +static volatile sig_atomic_t __lv_powerpc_canjump = 0; + +static void sigill_handler (int sig); + +static void sigill_handler (int sig) +{ + if (!__lv_powerpc_canjump) { + signal (sig, SIG_DFL); + raise (sig); + } + + __lv_powerpc_canjump = 0; + siglongjmp(__lv_powerpc_jmpbuf, 1); +} + +static void check_os_altivec_support(void) +{ +#if defined(OS_DARWIN) + int sels[2] = {CTL_HW, HW_VECTORUNIT}; + int has_vu = 0; + int len = sizeof (has_vu); + int err; + + err = sysctl(sels, 2, &has_vu, &len, NULL, 0); + + if (err == 0) { + if (has_vu != 0) { + __cpu_detect_caps.hasAltiVec = 1; + } + } +#else /* !OS_DARWIN */ + /* no Darwin, do it the brute-force way */ + /* this is borrowed from the libmpeg2 library */ + signal(SIGILL, sigill_handler); + if (sigsetjmp(__lv_powerpc_jmpbuf, 1)) { + signal(SIGILL, SIG_DFL); + } else { + __lv_powerpc_canjump = 1; + + __asm __volatile + ("mtspr 256, %0\n\t" + "vand %%v0, %%v0, %%v0" + : + : "r" (-1)); + + signal(SIGILL, SIG_DFL); + __cpu_detect_caps.hasAltiVec = 1; + } +#endif +} +#endif + +/* If we're running on a processor that can do SSE, let's see if we + * are allowed to or not. This will catch 2.4.0 or later kernels that + * haven't been configured for a Pentium III but are running on one, + * and RedHat patched 2.2 kernels that have broken exception handling + * support for user space apps that do SSE. + */ +static void check_os_katmai_support(void) +{ +#if defined(ARCH_X86) +#if defined(OS_FREEBSD) + int has_sse=0, ret; + int len = sizeof (has_sse); + + ret = sysctlbyname("hw.instruction_sse", &has_sse, &len, NULL, 0); + if (ret || !has_sse) + __cpu_detect_caps.hasSSE=0; + +#elif defined(OS_NETBSD) || defined(OS_OPENBSD) + int has_sse, has_sse2, ret, mib[2]; + int varlen; + + mib[0] = CTL_MACHDEP; + mib[1] = CPU_SSE; + varlen = sizeof (has_sse); + + ret = sysctl(mib, 2, &has_sse, &varlen, NULL, 0); + if (ret < 0 || !has_sse) { + __cpu_detect_caps.hasSSE = 0; + } else { + __cpu_detect_caps.hasSSE = 1; + } + + mib[1] = CPU_SSE2; + varlen = sizeof (has_sse2); + ret = sysctl(mib, 2, &has_sse2, &varlen, NULL, 0); + if (ret < 0 || !has_sse2) { + __cpu_detect_caps.hasSSE2 = 0; + } else { + __cpu_detect_caps.hasSSE2 = 1; + } + __cpu_detect_caps.hasSSE = 0; /* FIXME ?!?!? */ + +#elif defined(OS_WIN32) + LPTOP_LEVEL_EXCEPTION_FILTER exc_fil; + if (__cpu_detect_caps.hasSSE) { + exc_fil = SetUnhandledExceptionFilter(win32_sig_handler_sse); + __asm __volatile ("xorps %xmm0, %xmm0"); + SetUnhandledExceptionFilter(exc_fil); + } +#elif defined(OS_LINUX) + struct sigaction saved_sigill; + struct sigaction saved_sigfpe; + + /* Save the original signal handlers. + */ + sigaction(SIGILL, NULL, &saved_sigill); + sigaction(SIGFPE, NULL, &saved_sigfpe); + + signal(SIGILL, (void (*)(int))sigill_handler_sse); + signal(SIGFPE, (void (*)(int))sigfpe_handler_sse); + + /* Emulate test for OSFXSR in CR4. The OS will set this bit if it + * supports the extended FPU save and restore required for SSE. If + * we execute an SSE instruction on a PIII and get a SIGILL, the OS + * doesn't support Streaming SIMD Exceptions, even if the processor + * does. + */ + if (__cpu_detect_caps.hasSSE) { + __asm __volatile ("xorps %xmm1, %xmm0"); + } + + /* Emulate test for OSXMMEXCPT in CR4. The OS will set this bit if + * it supports unmasked SIMD FPU exceptions. If we unmask the + * exceptions, do a SIMD divide-by-zero and get a SIGILL, the OS + * doesn't support unmasked SIMD FPU exceptions. If we get a SIGFPE + * as expected, we're okay but we need to clean up after it. + * + * Are we being too stringent in our requirement that the OS support + * unmasked exceptions? Certain RedHat 2.2 kernels enable SSE by + * setting CR4.OSFXSR but don't support unmasked exceptions. Win98 + * doesn't even support them. We at least know the user-space SSE + * support is good in kernels that do support unmasked exceptions, + * and therefore to be safe I'm going to leave this test in here. + */ + if (__cpu_detect_caps.hasSSE) { + // test_os_katmai_exception_support(); + } + + /* Restore the original signal handlers. + */ + sigaction(SIGILL, &saved_sigill, NULL); + sigaction(SIGFPE, &saved_sigfpe, NULL); + +#else + /* We can't use POSIX signal handling to test the availability of + * SSE, so we disable it by default. + */ + __cpu_detect_caps.hasSSE = 0; +#endif /* __linux__ */ +#endif +} + + +static int has_cpuid(void) +{ +#if defined(ARCH_X86) + int a, c; + + __asm __volatile + ("pushf\n" + "popl %0\n" + "movl %0, %1\n" + "xorl $0x200000, %0\n" + "push %0\n" + "popf\n" + "pushf\n" + "popl %0\n" + : "=a" (a), "=c" (c) + : + : "cc"); + + return a != c; +#else + return 0; +#endif +} + +static int cpuid(unsigned int ax, unsigned int *p) +{ +#if defined(ARCH_X86) + unsigned int flags; + + __asm __volatile + ("movl %%ebx, %%esi\n\t" + "cpuid\n\t" + "xchgl %%ebx, %%esi" + : "=a" (p[0]), "=S" (p[1]), + "=c" (p[2]), "=d" (p[3]) + : "0" (ax)); + + return 0; +#else + return -1; +#endif +} + +void cpu_detect_initialize() +{ + unsigned int regs[4]; + unsigned int regs2[4]; + + int mib[2], ncpu; + int len; + + memset(&__cpu_detect_caps, 0, sizeof (struct cpu_detect_caps)); + + /* Check for arch type */ +#if defined(ARCH_MIPS) + __cpu_detect_caps.type = CPU_DETECT_TYPE_MIPS; +#elif defined(ARCH_ALPHA) + __cpu_detect_caps.type = CPU_DETECT_TYPE_ALPHA; +#elif defined(ARCH_SPARC) + __cpu_detect_caps.type = CPU_DETECT_TYPE_SPARC; +#elif defined(ARCH_X86) + __cpu_detect_caps.type = CPU_DETECT_TYPE_X86; +#elif defined(ARCH_POWERPC) + __cpu_detect_caps.type = CPU_DETECT_TYPE_POWERPC; +#else + __cpu_detect_caps.type = CPU_DETECT_TYPE_OTHER; +#endif + + /* Count the number of CPUs in system */ +#if !defined(OS_WIN32) && !defined(OS_UNKNOWN) && defined(_SC_NPROCESSORS_ONLN) + __cpu_detect_caps.nrcpu = sysconf(_SC_NPROCESSORS_ONLN); + if (__cpu_detect_caps.nrcpu == -1) + __cpu_detect_caps.nrcpu = 1; + +#elif defined(OS_NETBSD) || defined(OS_FREEBSD) || defined(OS_OPENBSD) + + mib[0] = CTL_HW; + mib[1] = HW_NCPU; + + len = sizeof (ncpu); + sysctl(mib, 2, &ncpu, &len, NULL, 0); + __cpu_detect_caps.nrcpu = ncpu; + +#else + __cpu_detect_caps.nrcpu = 1; +#endif + +#if defined(ARCH_X86) + /* No cpuid, old 486 or lower */ + if (has_cpuid() == 0) + return; + + __cpu_detect_caps.cacheline = 32; + + /* Get max cpuid level */ + cpuid(0x00000000, regs); + + if (regs[0] >= 0x00000001) { + unsigned int cacheline; + + cpuid (0x00000001, regs2); + + __cpu_detect_caps.x86cpuType = (regs2[0] >> 8) & 0xf; + if (__cpu_detect_caps.x86cpuType == 0xf) + __cpu_detect_caps.x86cpuType = 8 + ((regs2[0] >> 20) & 255); /* use extended family (P4, IA64) */ + + /* general feature flags */ + __cpu_detect_caps.hasTSC = (regs2[3] & (1 << 8 )) >> 8; /* 0x0000010 */ + __cpu_detect_caps.hasMMX = (regs2[3] & (1 << 23 )) >> 23; /* 0x0800000 */ + __cpu_detect_caps.hasSSE = (regs2[3] & (1 << 25 )) >> 25; /* 0x2000000 */ + __cpu_detect_caps.hasSSE2 = (regs2[3] & (1 << 26 )) >> 26; /* 0x4000000 */ + __cpu_detect_caps.hasSSE3 = (regs2[2] & (1)); /* 0x0000001 */ + __cpu_detect_caps.hasSSSE3 = (regs2[2] & (1 << 9 )) >> 9; /* 0x0000020 */ + __cpu_detect_caps.hasMMX2 = __cpu_detect_caps.hasSSE; /* SSE cpus supports mmxext too */ + + cacheline = ((regs2[1] >> 8) & 0xFF) * 8; + if (cacheline > 0) + __cpu_detect_caps.cacheline = cacheline; + } + + cpuid(0x80000000, regs); + + if (regs[0] >= 0x80000001) { + + cpuid(0x80000001, regs2); + + __cpu_detect_caps.hasMMX |= (regs2[3] & (1 << 23 )) >> 23; /* 0x0800000 */ + __cpu_detect_caps.hasMMX2 |= (regs2[3] & (1 << 22 )) >> 22; /* 0x400000 */ + __cpu_detect_caps.has3DNow = (regs2[3] & (1 << 31 )) >> 31; /* 0x80000000 */ + __cpu_detect_caps.has3DNowExt = (regs2[3] & (1 << 30 )) >> 30; + } + + if (regs[0] >= 0x80000006) { + cpuid(0x80000006, regs2); + __cpu_detect_caps.cacheline = regs2[2] & 0xFF; + } + + +#if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_NETBSD) || defined(OS_CYGWIN) || defined(OS_OPENBSD) + if (__cpu_detect_caps.hasSSE) + check_os_katmai_support(); + + if (!__cpu_detect_caps.hasSSE) { + __cpu_detect_caps.hasSSE2 = 0; + __cpu_detect_caps.hasSSE3 = 0; + __cpu_detect_caps.hasSSSE3 = 0; + } +#else + __cpu_detect_caps.hasSSE = 0; + __cpu_detect_caps.hasSSE2 = 0; + __cpu_detect_caps.hasSSE3 = 0; + __cpu_detect_caps.hasSSSE3 = 0; +#endif +#endif /* ARCH_X86 */ + +#if defined(ARCH_POWERPC) + check_os_altivec_support(); +#endif /* ARCH_POWERPC */ + + __cpu_detect_initialized = 1; +} + +struct cpu_detect_caps *cpu_detect_get_caps() +{ + return &__cpu_detect_caps; +} + +/* The getters and setters for feature flags */ +int cpu_detect_get_tsc() +{ + return __cpu_detect_caps.hasTSC; +} + +int cpu_detect_get_mmx() +{ + return __cpu_detect_caps.hasMMX; +} + +int cpu_detect_get_mmx2() +{ + return __cpu_detect_caps.hasMMX2; +} + +int cpu_detect_get_sse() +{ + return __cpu_detect_caps.hasSSE; +} + +int cpu_detect_get_sse2() +{ + return __cpu_detect_caps.hasSSE2; +} + +int cpu_detect_get_sse3() +{ + return __cpu_detect_caps.hasSSE3; +} + +int cpu_detect_get_ssse3() +{ + return __cpu_detect_caps.hasSSSE3; +} + +int cpu_detect_get_3dnow() +{ + return __cpu_detect_caps.has3DNow; +} + +int cpu_detect_get_3dnow2() +{ + return __cpu_detect_caps.has3DNowExt; +} + +int cpu_detect_get_altivec() +{ + return __cpu_detect_caps.hasAltiVec; +} + diff --git a/src/gallium/auxiliary/util/u_cpu_detect.h b/src/gallium/auxiliary/util/u_cpu_detect.h new file mode 100644 index 0000000000..1612d49286 --- /dev/null +++ b/src/gallium/auxiliary/util/u_cpu_detect.h @@ -0,0 +1,78 @@ +/************************************************************************** + * + * Copyright 2008 Dennis Smit + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * AUTHORS, COPYRIGHT HOLDERS, AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + ***************************************************************************/ + +/* + * Based on the work of Eric Anholt <anholt@FreeBSD.org> + */ + +#ifndef _CPU_DETECT_H +#define _CPU_DETECT_H + +typedef enum { + CPU_DETECT_TYPE_MIPS, + CPU_DETECT_TYPE_ALPHA, + CPU_DETECT_TYPE_SPARC, + CPU_DETECT_TYPE_X86, + CPU_DETECT_TYPE_POWERPC, + CPU_DETECT_TYPE_OTHER +} cpu_detect_type; + +struct cpu_detect_caps { + cpu_detect_type type; + int nrcpu; + + /* Feature flags */ + int x86cpuType; + int cacheline; + + int hasTSC; + int hasMMX; + int hasMMX2; + int hasSSE; + int hasSSE2; + int hasSSE3; + int hasSSSE3; + int has3DNow; + int has3DNowExt; + int hasAltiVec; +}; + +/* prototypes */ +void cpu_detect_initialize(void); +struct cpu_detect_caps *cpu_detect_get_caps(void); + +int cpu_detect_get_tsc(void); +int cpu_detect_get_mmx(void); +int cpu_detect_get_mmx2(void); +int cpu_detect_get_sse(void); +int cpu_detect_get_sse2(void); +int cpu_detect_get_sse3(void); +int cpu_detect_get_ssse3(void); +int cpu_detect_get_3dnow(void); +int cpu_detect_get_3dnow2(void); +int cpu_detect_get_altivec(void); + +#endif /* _CPU_DETECT_H */ diff --git a/src/gallium/auxiliary/util/u_handle_table.c b/src/gallium/auxiliary/util/u_handle_table.c new file mode 100644 index 0000000000..8a298f7c41 --- /dev/null +++ b/src/gallium/auxiliary/util/u_handle_table.c @@ -0,0 +1,207 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * Generic handle table implementation. + * + * @author José Fonseca <jrfonseca@tungstengraphics.com> + */ + + +#include "pipe/p_compiler.h" +#include "pipe/p_debug.h" +#include "pipe/p_util.h" + +#include "u_handle_table.h" + + +#define HANDLE_TABLE_INITIAL_SIZE 16 + + +struct handle_table +{ + /** Object array. Empty handles have a null object */ + void **objects; + + /** Number of objects the handle can currently hold */ + unsigned size; + /** Number of consecutive objects allocated at the start of the table */ + unsigned filled; + + /** Optional object destructor */ + void (*destroy)(void *object); +}; + + +struct handle_table * +handle_table_create(void) +{ + struct handle_table *ht; + + ht = MALLOC_STRUCT(handle_table); + if(!ht) + return NULL; + + ht->objects = (void **)CALLOC(HANDLE_TABLE_INITIAL_SIZE, sizeof(void *)); + if(!ht->objects) { + FREE(ht); + return NULL; + } + + ht->size = HANDLE_TABLE_INITIAL_SIZE; + ht->filled = 0; + + ht->destroy = NULL; + + return ht; +} + + +void +handle_table_set_destroy(struct handle_table *ht, + void (*destroy)(void *object)) +{ + assert(ht); + ht->destroy = destroy; +} + + +unsigned +handle_table_add(struct handle_table *ht, + void *object) +{ + unsigned index; + unsigned handle; + + assert(ht); + assert(object); + if(!object) + return 0; + + /* linear search for an empty handle */ + while(ht->filled < ht->size) { + if(!ht->objects[ht->filled]) + break; + ++ht->filled; + } + + /* grow the table */ + if(ht->filled == ht->size) { + unsigned new_size; + void **new_objects; + + new_size = ht->size*2; + assert(new_size); + + new_objects = (void **)REALLOC((void *)ht->objects, + ht->size*sizeof(void *), + new_size*sizeof(void *)); + if(!new_objects) + return 0; + + memset(new_objects + ht->size, 0, (new_size - ht->size)*sizeof(void *)); + + ht->size = new_size; + ht->objects = new_objects; + } + + index = ht->filled; + + handle = index + 1; + + /* check integer overflow */ + if(!handle) + return 0; + + assert(!ht->objects[index]); + ht->objects[index] = object; + ++ht->filled; + + return handle; +} + + +void * +handle_table_get(struct handle_table *ht, + unsigned handle) +{ + void *object; + + assert(ht); + assert(handle > 0); + assert(handle <= ht->size); + if(!handle || handle > ht->size) + return NULL; + + object = ht->objects[handle - 1]; + assert(object); + + return object; +} + + +void +handle_table_remove(struct handle_table *ht, + unsigned handle) +{ + void *object; + unsigned index; + + assert(ht); + assert(handle > 0); + assert(handle <= ht->size); + if(!handle || handle > ht->size) + return; + + index = handle - 1; + object = ht->objects[index]; + assert(object); + + if(object && ht->destroy) + ht->destroy(object); + + ht->objects[index] = NULL; + if(index < ht->filled) + ht->filled = index; +} + + +void +handle_table_destroy(struct handle_table *ht) +{ + unsigned index; + assert(ht); + + if(ht->destroy) + for(index = 0; index < ht->size; ++index) + if(ht->objects[index]) + ht->destroy(ht->objects[index]); + + FREE(ht->objects); + FREE(ht); +} + diff --git a/src/gallium/auxiliary/util/u_handle_table.h b/src/gallium/auxiliary/util/u_handle_table.h new file mode 100644 index 0000000000..51fc273865 --- /dev/null +++ b/src/gallium/auxiliary/util/u_handle_table.h @@ -0,0 +1,96 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * Generic handle table. + * + * @author José Fonseca <jrfonseca@tungstengraphics.com> + */ + +#ifndef U_HANDLE_TABLE_H_ +#define U_HANDLE_TABLE_H_ + + +#ifdef __cplusplus +extern "C" { +#endif + + +/** + * Abstract data type to map integer handles to objects. + */ +struct handle_table; + + +struct handle_table * +handle_table_create(void); + + +/** + * Set an optional destructor callback. + * + * If set, it will be called during handle_table_remove and + * handle_table_destroy calls. + */ +void +handle_table_set_destroy(struct handle_table *ht, + void (*destroy)(void *object)); + + +/** + * Add a new object. + * + * Returns a zero handle on failure (out of memory). + */ +unsigned +handle_table_add(struct handle_table *ht, + void *object); + +/** + * Fetch an existing object. + * + * Returns NULL for an invalid handle. + */ +void * +handle_table_get(struct handle_table *ht, + unsigned handle); + + +void +handle_table_remove(struct handle_table *ht, + unsigned handle); + + +void +handle_table_destroy(struct handle_table *ht); + + +#ifdef __cplusplus +} +#endif + +#endif /* U_HANDLE_TABLE_H_ */ diff --git a/src/gallium/auxiliary/util/u_snprintf.c b/src/gallium/auxiliary/util/u_snprintf.c new file mode 100644 index 0000000000..61c20b48f7 --- /dev/null +++ b/src/gallium/auxiliary/util/u_snprintf.c @@ -0,0 +1,1478 @@ +/* + * Copyright (c) 1995 Patrick Powell. + * + * This code is based on code written by Patrick Powell <papowell@astart.com>. + * It may be used for any purpose as long as this notice remains intact on all + * source code distributions. + */ + +/* + * Copyright (c) 2008 Holger Weiss. + * + * This version of the code is maintained by Holger Weiss <holger@jhweiss.de>. + * My changes to the code may freely be used, modified and/or redistributed for + * any purpose. It would be nice if additions and fixes to this file (including + * trivial code cleanups) would be sent back in order to let me include them in + * the version available at <http://www.jhweiss.de/software/snprintf.html>. + * However, this is not a requirement for using or redistributing (possibly + * modified) versions of this file, nor is leaving this notice intact mandatory. + */ + +/* + * History + * + * 2008-01-20 Holger Weiss <holger@jhweiss.de> for C99-snprintf 1.1: + * + * Fixed the detection of infinite floating point values on IRIX (and + * possibly other systems) and applied another few minor cleanups. + * + * 2008-01-06 Holger Weiss <holger@jhweiss.de> for C99-snprintf 1.0: + * + * Added a lot of new features, fixed many bugs, and incorporated various + * improvements done by Andrew Tridgell <tridge@samba.org>, Russ Allbery + * <rra@stanford.edu>, Hrvoje Niksic <hniksic@xemacs.org>, Damien Miller + * <djm@mindrot.org>, and others for the Samba, INN, Wget, and OpenSSH + * projects. The additions include: support the "e", "E", "g", "G", and + * "F" conversion specifiers (and use conversion style "f" or "F" for the + * still unsupported "a" and "A" specifiers); support the "hh", "ll", "j", + * "t", and "z" length modifiers; support the "#" flag and the (non-C99) + * "'" flag; use localeconv(3) (if available) to get both the current + * locale's decimal point character and the separator between groups of + * digits; fix the handling of various corner cases of field width and + * precision specifications; fix various floating point conversion bugs; + * handle infinite and NaN floating point values; don't attempt to write to + * the output buffer (which may be NULL) if a size of zero was specified; + * check for integer overflow of the field width, precision, and return + * values and during the floating point conversion; use the OUTCHAR() macro + * instead of a function for better performance; provide asprintf(3) and + * vasprintf(3) functions; add new test cases. The replacement functions + * have been renamed to use an "rpl_" prefix, the function calls in the + * main project (and in this file) must be redefined accordingly for each + * replacement function which is needed (by using Autoconf or other means). + * Various other minor improvements have been applied and the coding style + * was cleaned up for consistency. + * + * 2007-07-23 Holger Weiss <holger@jhweiss.de> for Mutt 1.5.13: + * + * C99 compliant snprintf(3) and vsnprintf(3) functions return the number + * of characters that would have been written to a sufficiently sized + * buffer (excluding the '\0'). The original code simply returned the + * length of the resulting output string, so that's been fixed. + * + * 1998-03-05 Michael Elkins <me@mutt.org> for Mutt 0.90.8: + * + * The original code assumed that both snprintf(3) and vsnprintf(3) were + * missing. Some systems only have snprintf(3) but not vsnprintf(3), so + * the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF. + * + * 1998-01-27 Thomas Roessler <roessler@does-not-exist.org> for Mutt 0.89i: + * + * The PGP code was using unsigned hexadecimal formats. Unfortunately, + * unsigned formats simply didn't work. + * + * 1997-10-22 Brandon Long <blong@fiction.net> for Mutt 0.87.1: + * + * Ok, added some minimal floating point support, which means this probably + * requires libm on most operating systems. Don't yet support the exponent + * (e,E) and sigfig (g,G). Also, fmtint() was pretty badly broken, it just + * wasn't being exercised in ways which showed it, so that's been fixed. + * Also, formatted the code to Mutt conventions, and removed dead code left + * over from the original. Also, there is now a builtin-test, run with: + * gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm && ./snprintf + * + * 2996-09-15 Brandon Long <blong@fiction.net> for Mutt 0.43: + * + * This was ugly. It is still ugly. I opted out of floating point + * numbers, but the formatter understands just about everything from the + * normal C string format, at least as far as I can tell from the Solaris + * 2.5 printf(3S) man page. + */ + +/* + * ToDo + * + * - Add wide character support. + * - Add support for "%a" and "%A" conversions. + * - Create test routines which predefine the expected results. Our test cases + * usually expose bugs in system implementations rather than in ours :-) + */ + +/* + * Usage + * + * 1) The following preprocessor macros should be defined to 1 if the feature or + * file in question is available on the target system (by using Autoconf or + * other means), though basic functionality should be available as long as + * HAVE_STDARG_H and HAVE_STDLIB_H are defined correctly: + * + * HAVE_VSNPRINTF + * HAVE_SNPRINTF + * HAVE_VASPRINTF + * HAVE_ASPRINTF + * HAVE_STDARG_H + * HAVE_STDDEF_H + * HAVE_STDINT_H + * HAVE_STDLIB_H + * HAVE_INTTYPES_H + * HAVE_LOCALE_H + * HAVE_LOCALECONV + * HAVE_LCONV_DECIMAL_POINT + * HAVE_LCONV_THOUSANDS_SEP + * HAVE_LONG_DOUBLE + * HAVE_LONG_LONG_INT + * HAVE_UNSIGNED_LONG_LONG_INT + * HAVE_INTMAX_T + * HAVE_UINTMAX_T + * HAVE_UINTPTR_T + * HAVE_PTRDIFF_T + * HAVE_VA_COPY + * HAVE___VA_COPY + * + * 2) The calls to the functions which should be replaced must be redefined + * throughout the project files (by using Autoconf or other means): + * + * #define vsnprintf rpl_vsnprintf + * #define snprintf rpl_snprintf + * #define vasprintf rpl_vasprintf + * #define asprintf rpl_asprintf + * + * 3) The required replacement functions should be declared in some header file + * included throughout the project files: + * + * #if HAVE_CONFIG_H + * #include <config.h> + * #endif + * #if HAVE_STDARG_H + * #include <stdarg.h> + * #if !HAVE_VSNPRINTF + * int rpl_vsnprintf(char *, size_t, const char *, va_list); + * #endif + * #if !HAVE_SNPRINTF + * int rpl_snprintf(char *, size_t, const char *, ...); + * #endif + * #if !HAVE_VASPRINTF + * int rpl_vasprintf(char **, const char *, va_list); + * #endif + * #if !HAVE_ASPRINTF + * int rpl_asprintf(char **, const char *, ...); + * #endif + * #endif + * + * Autoconf macros for handling step 1 and step 2 are available at + * <http://www.jhweiss.de/software/snprintf.html>. + */ + +#if HAVE_CONFIG_H +#include <config.h> +#else +#ifdef WIN32 +#define vsnprintf rpl_vsnprintf +#define snprintf rpl_snprintf +#define HAVE_VSNPRINTF 0 +#define HAVE_SNPRINTF 0 +#define HAVE_VASPRINTF 1 /* not needed */ +#define HAVE_ASPRINTF 1 /* not needed */ +#define HAVE_STDARG_H 1 +#define HAVE_STDDEF_H 1 +#define HAVE_STDINT_H 0 +#define HAVE_STDLIB_H 1 +#define HAVE_INTTYPES_H 0 +#define HAVE_LOCALE_H 0 +#define HAVE_LOCALECONV 0 +#define HAVE_LCONV_DECIMAL_POINT 0 +#define HAVE_LCONV_THOUSANDS_SEP 0 +#define HAVE_LONG_DOUBLE 0 +#define HAVE_LONG_LONG_INT 1 +#define HAVE_UNSIGNED_LONG_LONG_INT 1 +#define HAVE_INTMAX_T 0 +#define HAVE_UINTMAX_T 0 +#define HAVE_UINTPTR_T 1 +#define HAVE_PTRDIFF_T 1 +#define HAVE_VA_COPY 0 +#define HAVE___VA_COPY 0 +#else +#define HAVE_VSNPRINTF 1 +#define HAVE_SNPRINTF 1 +#define HAVE_VASPRINTF 1 +#define HAVE_ASPRINTF 1 +#endif +#endif /* HAVE_CONFIG_H */ + +#if !HAVE_SNPRINTF || !HAVE_VSNPRINTF || !HAVE_ASPRINTF || !HAVE_VASPRINTF +#include <stdio.h> /* For NULL, size_t, vsnprintf(3), and vasprintf(3). */ +#ifdef VA_START +#undef VA_START +#endif /* defined(VA_START) */ +#ifdef VA_SHIFT +#undef VA_SHIFT +#endif /* defined(VA_SHIFT) */ +#if HAVE_STDARG_H +#include <stdarg.h> +#define VA_START(ap, last) va_start(ap, last) +#define VA_SHIFT(ap, value, type) /* No-op for ANSI C. */ +#else /* Assume <varargs.h> is available. */ +#include <varargs.h> +#define VA_START(ap, last) va_start(ap) /* "last" is ignored. */ +#define VA_SHIFT(ap, value, type) value = va_arg(ap, type) +#endif /* HAVE_STDARG_H */ + +#if !HAVE_VASPRINTF +#if HAVE_STDLIB_H +#include <stdlib.h> /* For malloc(3). */ +#endif /* HAVE_STDLIB_H */ +#ifdef VA_COPY +#undef VA_COPY +#endif /* defined(VA_COPY) */ +#ifdef VA_END_COPY +#undef VA_END_COPY +#endif /* defined(VA_END_COPY) */ +#if HAVE_VA_COPY +#define VA_COPY(dest, src) va_copy(dest, src) +#define VA_END_COPY(ap) va_end(ap) +#elif HAVE___VA_COPY +#define VA_COPY(dest, src) __va_copy(dest, src) +#define VA_END_COPY(ap) va_end(ap) +#else +#define VA_COPY(dest, src) (void)mymemcpy(&dest, &src, sizeof(va_list)) +#define VA_END_COPY(ap) /* No-op. */ +#define NEED_MYMEMCPY 1 +static void *mymemcpy(void *, void *, size_t); +#endif /* HAVE_VA_COPY */ +#endif /* !HAVE_VASPRINTF */ + +#if !HAVE_VSNPRINTF +#include <limits.h> /* For *_MAX. */ +#if HAVE_INTTYPES_H +#include <inttypes.h> /* For intmax_t (if not defined in <stdint.h>). */ +#endif /* HAVE_INTTYPES_H */ +#if HAVE_LOCALE_H +#include <locale.h> /* For localeconv(3). */ +#endif /* HAVE_LOCALE_H */ +#if HAVE_STDDEF_H +#include <stddef.h> /* For ptrdiff_t. */ +#endif /* HAVE_STDDEF_H */ +#if HAVE_STDINT_H +#include <stdint.h> /* For intmax_t. */ +#endif /* HAVE_STDINT_H */ + +/* Support for unsigned long long int. We may also need ULLONG_MAX. */ +#ifndef ULONG_MAX /* We may need ULONG_MAX as a fallback. */ +#ifdef UINT_MAX +#define ULONG_MAX UINT_MAX +#else +#define ULONG_MAX INT_MAX +#endif /* defined(UINT_MAX) */ +#endif /* !defined(ULONG_MAX) */ +#ifdef ULLONG +#undef ULLONG +#endif /* defined(ULLONG) */ +#if HAVE_UNSIGNED_LONG_LONG_INT +#define ULLONG unsigned long long int +#ifndef ULLONG_MAX +#define ULLONG_MAX ULONG_MAX +#endif /* !defined(ULLONG_MAX) */ +#else +#define ULLONG unsigned long int +#ifdef ULLONG_MAX +#undef ULLONG_MAX +#endif /* defined(ULLONG_MAX) */ +#define ULLONG_MAX ULONG_MAX +#endif /* HAVE_LONG_LONG_INT */ + +/* Support for uintmax_t. We also need UINTMAX_MAX. */ +#ifdef UINTMAX_T +#undef UINTMAX_T +#endif /* defined(UINTMAX_T) */ +#if HAVE_UINTMAX_T || defined(uintmax_t) +#define UINTMAX_T uintmax_t +#ifndef UINTMAX_MAX +#define UINTMAX_MAX ULLONG_MAX +#endif /* !defined(UINTMAX_MAX) */ +#else +#define UINTMAX_T ULLONG +#ifdef UINTMAX_MAX +#undef UINTMAX_MAX +#endif /* defined(UINTMAX_MAX) */ +#define UINTMAX_MAX ULLONG_MAX +#endif /* HAVE_UINTMAX_T || defined(uintmax_t) */ + +/* Support for long double. */ +#ifndef LDOUBLE +#if HAVE_LONG_DOUBLE +#define LDOUBLE long double +#else +#define LDOUBLE double +#endif /* HAVE_LONG_DOUBLE */ +#endif /* !defined(LDOUBLE) */ + +/* Support for long long int. */ +#ifndef LLONG +#if HAVE_LONG_LONG_INT +#define LLONG long long int +#else +#define LLONG long int +#endif /* HAVE_LONG_LONG_INT */ +#endif /* !defined(LLONG) */ + +/* Support for intmax_t. */ +#ifndef INTMAX_T +#if HAVE_INTMAX_T || defined(intmax_t) +#define INTMAX_T intmax_t +#else +#define INTMAX_T LLONG +#endif /* HAVE_INTMAX_T || defined(intmax_t) */ +#endif /* !defined(INTMAX_T) */ + +/* Support for uintptr_t. */ +#ifndef UINTPTR_T +#if HAVE_UINTPTR_T || defined(uintptr_t) +#define UINTPTR_T uintptr_t +#else +#define UINTPTR_T unsigned long int +#endif /* HAVE_UINTPTR_T || defined(uintptr_t) */ +#endif /* !defined(UINTPTR_T) */ + +/* Support for ptrdiff_t. */ +#ifndef PTRDIFF_T +#if HAVE_PTRDIFF_T || defined(ptrdiff_t) +#define PTRDIFF_T ptrdiff_t +#else +#define PTRDIFF_T long int +#endif /* HAVE_PTRDIFF_T || defined(ptrdiff_t) */ +#endif /* !defined(PTRDIFF_T) */ + +/* + * We need an unsigned integer type corresponding to ptrdiff_t (cf. C99: + * 7.19.6.1, 7). However, we'll simply use PTRDIFF_T and convert it to an + * unsigned type if necessary. This should work just fine in practice. + */ +#ifndef UPTRDIFF_T +#define UPTRDIFF_T PTRDIFF_T +#endif /* !defined(UPTRDIFF_T) */ + +/* + * We need a signed integer type corresponding to size_t (cf. C99: 7.19.6.1, 7). + * However, we'll simply use size_t and convert it to a signed type if + * necessary. This should work just fine in practice. + */ +#ifndef SSIZE_T +#define SSIZE_T size_t +#endif /* !defined(SSIZE_T) */ + +/* Either ERANGE or E2BIG should be available everywhere. */ +#ifndef ERANGE +#define ERANGE E2BIG +#endif /* !defined(ERANGE) */ +#ifndef EOVERFLOW +#define EOVERFLOW ERANGE +#endif /* !defined(EOVERFLOW) */ + +/* + * Buffer size to hold the octal string representation of UINT128_MAX without + * nul-termination ("3777777777777777777777777777777777777777777"). + */ +#ifdef MAX_CONVERT_LENGTH +#undef MAX_CONVERT_LENGTH +#endif /* defined(MAX_CONVERT_LENGTH) */ +#define MAX_CONVERT_LENGTH 43 + +/* Format read states. */ +#define PRINT_S_DEFAULT 0 +#define PRINT_S_FLAGS 1 +#define PRINT_S_WIDTH 2 +#define PRINT_S_DOT 3 +#define PRINT_S_PRECISION 4 +#define PRINT_S_MOD 5 +#define PRINT_S_CONV 6 + +/* Format flags. */ +#define PRINT_F_MINUS (1 << 0) +#define PRINT_F_PLUS (1 << 1) +#define PRINT_F_SPACE (1 << 2) +#define PRINT_F_NUM (1 << 3) +#define PRINT_F_ZERO (1 << 4) +#define PRINT_F_QUOTE (1 << 5) +#define PRINT_F_UP (1 << 6) +#define PRINT_F_UNSIGNED (1 << 7) +#define PRINT_F_TYPE_G (1 << 8) +#define PRINT_F_TYPE_E (1 << 9) + +/* Conversion flags. */ +#define PRINT_C_CHAR 1 +#define PRINT_C_SHORT 2 +#define PRINT_C_LONG 3 +#define PRINT_C_LLONG 4 +#define PRINT_C_LDOUBLE 5 +#define PRINT_C_SIZE 6 +#define PRINT_C_PTRDIFF 7 +#define PRINT_C_INTMAX 8 + +#ifndef MAX +#define MAX(x, y) ((x >= y) ? x : y) +#endif /* !defined(MAX) */ +#ifndef CHARTOINT +#define CHARTOINT(ch) (ch - '0') +#endif /* !defined(CHARTOINT) */ +#ifndef ISDIGIT +#define ISDIGIT(ch) ('0' <= (unsigned char)ch && (unsigned char)ch <= '9') +#endif /* !defined(ISDIGIT) */ +#ifndef ISNAN +#define ISNAN(x) (x != x) +#endif /* !defined(ISNAN) */ +#ifndef ISINF +#define ISINF(x) (x != 0.0 && x + x == x) +#endif /* !defined(ISINF) */ + +#ifdef OUTCHAR +#undef OUTCHAR +#endif /* defined(OUTCHAR) */ +#define OUTCHAR(str, len, size, ch) \ +do { \ + if (len + 1 < size) \ + str[len] = ch; \ + (len)++; \ +} while (/* CONSTCOND */ 0) + +static void fmtstr(char *, size_t *, size_t, const char *, int, int, int); +static void fmtint(char *, size_t *, size_t, INTMAX_T, int, int, int, int); +static void fmtflt(char *, size_t *, size_t, LDOUBLE, int, int, int, int *); +static void printsep(char *, size_t *, size_t); +static int getnumsep(int); +static int getexponent(LDOUBLE); +static int convert(UINTMAX_T, char *, size_t, int, int); +static UINTMAX_T cast(LDOUBLE); +static UINTMAX_T myround(LDOUBLE); +static LDOUBLE mypow10(int); + +int +rpl_vsnprintf(char *str, size_t size, const char *format, va_list args) +{ + LDOUBLE fvalue; + INTMAX_T value; + unsigned char cvalue; + const char *strvalue; + INTMAX_T *intmaxptr; + PTRDIFF_T *ptrdiffptr; + SSIZE_T *sizeptr; + LLONG *llongptr; + long int *longptr; + int *intptr; + short int *shortptr; + signed char *charptr; + size_t len = 0; + int overflow = 0; + int base = 0; + int cflags = 0; + int flags = 0; + int width = 0; + int precision = -1; + int state = PRINT_S_DEFAULT; + char ch = *format++; + + /* + * C99 says: "If `n' is zero, nothing is written, and `s' may be a null + * pointer." (7.19.6.5, 2) We're forgiving and allow a NULL pointer + * even if a size larger than zero was specified. At least NetBSD's + * snprintf(3) does the same, as well as other versions of this file. + * (Though some of these versions will write to a non-NULL buffer even + * if a size of zero was specified, which violates the standard.) + */ + if (str == NULL && size != 0) + size = 0; + + while (ch != '\0') + switch (state) { + case PRINT_S_DEFAULT: + if (ch == '%') + state = PRINT_S_FLAGS; + else + OUTCHAR(str, len, size, ch); + ch = *format++; + break; + case PRINT_S_FLAGS: + switch (ch) { + case '-': + flags |= PRINT_F_MINUS; + ch = *format++; + break; + case '+': + flags |= PRINT_F_PLUS; + ch = *format++; + break; + case ' ': + flags |= PRINT_F_SPACE; + ch = *format++; + break; + case '#': + flags |= PRINT_F_NUM; + ch = *format++; + break; + case '0': + flags |= PRINT_F_ZERO; + ch = *format++; + break; + case '\'': /* SUSv2 flag (not in C99). */ + flags |= PRINT_F_QUOTE; + ch = *format++; + break; + default: + state = PRINT_S_WIDTH; + break; + } + break; + case PRINT_S_WIDTH: + if (ISDIGIT(ch)) { + ch = CHARTOINT(ch); + if (width > (INT_MAX - ch) / 10) { + overflow = 1; + goto out; + } + width = 10 * width + ch; + ch = *format++; + } else if (ch == '*') { + /* + * C99 says: "A negative field width argument is + * taken as a `-' flag followed by a positive + * field width." (7.19.6.1, 5) + */ + if ((width = va_arg(args, int)) < 0) { + flags |= PRINT_F_MINUS; + width = -width; + } + ch = *format++; + state = PRINT_S_DOT; + } else + state = PRINT_S_DOT; + break; + case PRINT_S_DOT: + if (ch == '.') { + state = PRINT_S_PRECISION; + ch = *format++; + } else + state = PRINT_S_MOD; + break; + case PRINT_S_PRECISION: + if (precision == -1) + precision = 0; + if (ISDIGIT(ch)) { + ch = CHARTOINT(ch); + if (precision > (INT_MAX - ch) / 10) { + overflow = 1; + goto out; + } + precision = 10 * precision + ch; + ch = *format++; + } else if (ch == '*') { + /* + * C99 says: "A negative precision argument is + * taken as if the precision were omitted." + * (7.19.6.1, 5) + */ + if ((precision = va_arg(args, int)) < 0) + precision = -1; + ch = *format++; + state = PRINT_S_MOD; + } else + state = PRINT_S_MOD; + break; + case PRINT_S_MOD: + switch (ch) { + case 'h': + ch = *format++; + if (ch == 'h') { /* It's a char. */ + ch = *format++; + cflags = PRINT_C_CHAR; + } else + cflags = PRINT_C_SHORT; + break; + case 'l': + ch = *format++; + if (ch == 'l') { /* It's a long long. */ + ch = *format++; + cflags = PRINT_C_LLONG; + } else + cflags = PRINT_C_LONG; + break; + case 'L': + cflags = PRINT_C_LDOUBLE; + ch = *format++; + break; + case 'j': + cflags = PRINT_C_INTMAX; + ch = *format++; + break; + case 't': + cflags = PRINT_C_PTRDIFF; + ch = *format++; + break; + case 'z': + cflags = PRINT_C_SIZE; + ch = *format++; + break; + } + state = PRINT_S_CONV; + break; + case PRINT_S_CONV: + switch (ch) { + case 'd': + /* FALLTHROUGH */ + case 'i': + switch (cflags) { + case PRINT_C_CHAR: + value = (signed char)va_arg(args, int); + break; + case PRINT_C_SHORT: + value = (short int)va_arg(args, int); + break; + case PRINT_C_LONG: + value = va_arg(args, long int); + break; + case PRINT_C_LLONG: + value = va_arg(args, LLONG); + break; + case PRINT_C_SIZE: + value = va_arg(args, SSIZE_T); + break; + case PRINT_C_INTMAX: + value = va_arg(args, INTMAX_T); + break; + case PRINT_C_PTRDIFF: + value = va_arg(args, PTRDIFF_T); + break; + default: + value = va_arg(args, int); + break; + } + fmtint(str, &len, size, value, 10, width, + precision, flags); + break; + case 'X': + flags |= PRINT_F_UP; + /* FALLTHROUGH */ + case 'x': + base = 16; + /* FALLTHROUGH */ + case 'o': + if (base == 0) + base = 8; + /* FALLTHROUGH */ + case 'u': + if (base == 0) + base = 10; + flags |= PRINT_F_UNSIGNED; + switch (cflags) { + case PRINT_C_CHAR: + value = (unsigned char)va_arg(args, + unsigned int); + break; + case PRINT_C_SHORT: + value = (unsigned short int)va_arg(args, + unsigned int); + break; + case PRINT_C_LONG: + value = va_arg(args, unsigned long int); + break; + case PRINT_C_LLONG: + value = va_arg(args, ULLONG); + break; + case PRINT_C_SIZE: + value = va_arg(args, size_t); + break; + case PRINT_C_INTMAX: + value = va_arg(args, UINTMAX_T); + break; + case PRINT_C_PTRDIFF: + value = va_arg(args, UPTRDIFF_T); + break; + default: + value = va_arg(args, unsigned int); + break; + } + fmtint(str, &len, size, value, base, width, + precision, flags); + break; + case 'A': + /* Not yet supported, we'll use "%F". */ + /* FALLTHROUGH */ + case 'F': + flags |= PRINT_F_UP; + case 'a': + /* Not yet supported, we'll use "%f". */ + /* FALLTHROUGH */ + case 'f': + if (cflags == PRINT_C_LDOUBLE) + fvalue = va_arg(args, LDOUBLE); + else + fvalue = va_arg(args, double); + fmtflt(str, &len, size, fvalue, width, + precision, flags, &overflow); + if (overflow) + goto out; + break; + case 'E': + flags |= PRINT_F_UP; + /* FALLTHROUGH */ + case 'e': + flags |= PRINT_F_TYPE_E; + if (cflags == PRINT_C_LDOUBLE) + fvalue = va_arg(args, LDOUBLE); + else + fvalue = va_arg(args, double); + fmtflt(str, &len, size, fvalue, width, + precision, flags, &overflow); + if (overflow) + goto out; + break; + case 'G': + flags |= PRINT_F_UP; + /* FALLTHROUGH */ + case 'g': + flags |= PRINT_F_TYPE_G; + if (cflags == PRINT_C_LDOUBLE) + fvalue = va_arg(args, LDOUBLE); + else + fvalue = va_arg(args, double); + /* + * If the precision is zero, it is treated as + * one (cf. C99: 7.19.6.1, 8). + */ + if (precision == 0) + precision = 1; + fmtflt(str, &len, size, fvalue, width, + precision, flags, &overflow); + if (overflow) + goto out; + break; + case 'c': + cvalue = (unsigned char)va_arg(args, int); + OUTCHAR(str, len, size, cvalue); + break; + case 's': + strvalue = va_arg(args, char *); + fmtstr(str, &len, size, strvalue, width, + precision, flags); + break; + case 'p': + /* + * C99 says: "The value of the pointer is + * converted to a sequence of printing + * characters, in an implementation-defined + * manner." (C99: 7.19.6.1, 8) + */ + if ((strvalue = va_arg(args, void *)) == NULL) + /* + * We use the glibc format. BSD prints + * "0x0", SysV "0". + */ + fmtstr(str, &len, size, "(nil)", width, + -1, flags); + else { + /* + * We use the BSD/glibc format. SysV + * omits the "0x" prefix (which we emit + * using the PRINT_F_NUM flag). + */ + flags |= PRINT_F_NUM; + flags |= PRINT_F_UNSIGNED; + fmtint(str, &len, size, + (UINTPTR_T)strvalue, 16, width, + precision, flags); + } + break; + case 'n': + switch (cflags) { + case PRINT_C_CHAR: + charptr = va_arg(args, signed char *); + *charptr = len; + break; + case PRINT_C_SHORT: + shortptr = va_arg(args, short int *); + *shortptr = len; + break; + case PRINT_C_LONG: + longptr = va_arg(args, long int *); + *longptr = len; + break; + case PRINT_C_LLONG: + llongptr = va_arg(args, LLONG *); + *llongptr = len; + break; + case PRINT_C_SIZE: + /* + * C99 says that with the "z" length + * modifier, "a following `n' conversion + * specifier applies to a pointer to a + * signed integer type corresponding to + * size_t argument." (7.19.6.1, 7) + */ + sizeptr = va_arg(args, SSIZE_T *); + *sizeptr = len; + break; + case PRINT_C_INTMAX: + intmaxptr = va_arg(args, INTMAX_T *); + *intmaxptr = len; + break; + case PRINT_C_PTRDIFF: + ptrdiffptr = va_arg(args, PTRDIFF_T *); + *ptrdiffptr = len; + break; + default: + intptr = va_arg(args, int *); + *intptr = len; + break; + } + break; + case '%': /* Print a "%" character verbatim. */ + OUTCHAR(str, len, size, ch); + break; + default: /* Skip other characters. */ + break; + } + ch = *format++; + state = PRINT_S_DEFAULT; + base = cflags = flags = width = 0; + precision = -1; + break; + } +out: + if (len < size) + str[len] = '\0'; + else if (size > 0) + str[size - 1] = '\0'; + + if (overflow || len >= INT_MAX) { + return -1; + } + return (int)len; +} + +static void +fmtstr(char *str, size_t *len, size_t size, const char *value, int width, + int precision, int flags) +{ + int padlen, strln; /* Amount to pad. */ + int noprecision = (precision == -1); + + if (value == NULL) /* We're forgiving. */ + value = "(null)"; + + /* If a precision was specified, don't read the string past it. */ + for (strln = 0; value[strln] != '\0' && + (noprecision || strln < precision); strln++) + continue; + + if ((padlen = width - strln) < 0) + padlen = 0; + if (flags & PRINT_F_MINUS) /* Left justify. */ + padlen = -padlen; + + while (padlen > 0) { /* Leading spaces. */ + OUTCHAR(str, *len, size, ' '); + padlen--; + } + while (*value != '\0' && (noprecision || precision-- > 0)) { + OUTCHAR(str, *len, size, *value); + value++; + } + while (padlen < 0) { /* Trailing spaces. */ + OUTCHAR(str, *len, size, ' '); + padlen++; + } +} + +static void +fmtint(char *str, size_t *len, size_t size, INTMAX_T value, int base, int width, + int precision, int flags) +{ + UINTMAX_T uvalue; + char iconvert[MAX_CONVERT_LENGTH]; + char sign = 0; + char hexprefix = 0; + int spadlen = 0; /* Amount to space pad. */ + int zpadlen = 0; /* Amount to zero pad. */ + int pos; + int separators = (flags & PRINT_F_QUOTE); + int noprecision = (precision == -1); + + if (flags & PRINT_F_UNSIGNED) + uvalue = value; + else { + uvalue = (value >= 0) ? value : -value; + if (value < 0) + sign = '-'; + else if (flags & PRINT_F_PLUS) /* Do a sign. */ + sign = '+'; + else if (flags & PRINT_F_SPACE) + sign = ' '; + } + + pos = convert(uvalue, iconvert, sizeof(iconvert), base, + flags & PRINT_F_UP); + + if (flags & PRINT_F_NUM && uvalue != 0) { + /* + * C99 says: "The result is converted to an `alternative form'. + * For `o' conversion, it increases the precision, if and only + * if necessary, to force the first digit of the result to be a + * zero (if the value and precision are both 0, a single 0 is + * printed). For `x' (or `X') conversion, a nonzero result has + * `0x' (or `0X') prefixed to it." (7.19.6.1, 6) + */ + switch (base) { + case 8: + if (precision <= pos) + precision = pos + 1; + break; + case 16: + hexprefix = (flags & PRINT_F_UP) ? 'X' : 'x'; + break; + } + } + + if (separators) /* Get the number of group separators we'll print. */ + separators = getnumsep(pos); + + zpadlen = precision - pos - separators; + spadlen = width /* Minimum field width. */ + - separators /* Number of separators. */ + - MAX(precision, pos) /* Number of integer digits. */ + - ((sign != 0) ? 1 : 0) /* Will we print a sign? */ + - ((hexprefix != 0) ? 2 : 0); /* Will we print a prefix? */ + + if (zpadlen < 0) + zpadlen = 0; + if (spadlen < 0) + spadlen = 0; + + /* + * C99 says: "If the `0' and `-' flags both appear, the `0' flag is + * ignored. For `d', `i', `o', `u', `x', and `X' conversions, if a + * precision is specified, the `0' flag is ignored." (7.19.6.1, 6) + */ + if (flags & PRINT_F_MINUS) /* Left justify. */ + spadlen = -spadlen; + else if (flags & PRINT_F_ZERO && noprecision) { + zpadlen += spadlen; + spadlen = 0; + } + while (spadlen > 0) { /* Leading spaces. */ + OUTCHAR(str, *len, size, ' '); + spadlen--; + } + if (sign != 0) /* Sign. */ + OUTCHAR(str, *len, size, sign); + if (hexprefix != 0) { /* A "0x" or "0X" prefix. */ + OUTCHAR(str, *len, size, '0'); + OUTCHAR(str, *len, size, hexprefix); + } + while (zpadlen > 0) { /* Leading zeros. */ + OUTCHAR(str, *len, size, '0'); + zpadlen--; + } + while (pos > 0) { /* The actual digits. */ + pos--; + OUTCHAR(str, *len, size, iconvert[pos]); + if (separators > 0 && pos > 0 && pos % 3 == 0) + printsep(str, len, size); + } + while (spadlen < 0) { /* Trailing spaces. */ + OUTCHAR(str, *len, size, ' '); + spadlen++; + } +} + +static void +fmtflt(char *str, size_t *len, size_t size, LDOUBLE fvalue, int width, + int precision, int flags, int *overflow) +{ + LDOUBLE ufvalue; + UINTMAX_T intpart; + UINTMAX_T fracpart; + UINTMAX_T mask; + const char *infnan = NULL; + char iconvert[MAX_CONVERT_LENGTH]; + char fconvert[MAX_CONVERT_LENGTH]; + char econvert[4]; /* "e-12" (without nul-termination). */ + char esign = 0; + char sign = 0; + int leadfraczeros = 0; + int exponent = 0; + int emitpoint = 0; + int omitzeros = 0; + int omitcount = 0; + int padlen = 0; + int epos = 0; + int fpos = 0; + int ipos = 0; + int separators = (flags & PRINT_F_QUOTE); + int estyle = (flags & PRINT_F_TYPE_E); +#if HAVE_LOCALECONV && HAVE_LCONV_DECIMAL_POINT + struct lconv *lc = localeconv(); +#endif /* HAVE_LOCALECONV && HAVE_LCONV_DECIMAL_POINT */ + + /* + * AIX' man page says the default is 0, but C99 and at least Solaris' + * and NetBSD's man pages say the default is 6, and sprintf(3) on AIX + * defaults to 6. + */ + if (precision == -1) + precision = 6; + + if (fvalue < 0.0) + sign = '-'; + else if (flags & PRINT_F_PLUS) /* Do a sign. */ + sign = '+'; + else if (flags & PRINT_F_SPACE) + sign = ' '; + + if (ISNAN(fvalue)) + infnan = (flags & PRINT_F_UP) ? "NAN" : "nan"; + else if (ISINF(fvalue)) + infnan = (flags & PRINT_F_UP) ? "INF" : "inf"; + + if (infnan != NULL) { + if (sign != 0) + iconvert[ipos++] = sign; + while (*infnan != '\0') + iconvert[ipos++] = *infnan++; + fmtstr(str, len, size, iconvert, width, ipos, flags); + return; + } + + /* "%e" (or "%E") or "%g" (or "%G") conversion. */ + if (flags & PRINT_F_TYPE_E || flags & PRINT_F_TYPE_G) { + if (flags & PRINT_F_TYPE_G) { + /* + * For "%g" (and "%G") conversions, the precision + * specifies the number of significant digits, which + * includes the digits in the integer part. The + * conversion will or will not be using "e-style" (like + * "%e" or "%E" conversions) depending on the precision + * and on the exponent. However, the exponent can be + * affected by rounding the converted value, so we'll + * leave this decision for later. Until then, we'll + * assume that we're going to do an "e-style" conversion + * (in order to get the exponent calculated). For + * "e-style", the precision must be decremented by one. + */ + precision--; + /* + * For "%g" (and "%G") conversions, trailing zeros are + * removed from the fractional portion of the result + * unless the "#" flag was specified. + */ + if (!(flags & PRINT_F_NUM)) + omitzeros = 1; + } + exponent = getexponent(fvalue); + estyle = 1; + } + +again: + /* + * Sorry, we only support 9, 19, or 38 digits (that is, the number of + * digits of the 32-bit, the 64-bit, or the 128-bit UINTMAX_MAX value + * minus one) past the decimal point due to our conversion method. + */ + switch (sizeof(UINTMAX_T)) { + case 16: + if (precision > 38) + precision = 38; + break; + case 8: + if (precision > 19) + precision = 19; + break; + default: + if (precision > 9) + precision = 9; + break; + } + + ufvalue = (fvalue >= 0.0) ? fvalue : -fvalue; + if (estyle) /* We want exactly one integer digit. */ + ufvalue /= mypow10(exponent); + + if ((intpart = cast(ufvalue)) == UINTMAX_MAX) { + *overflow = 1; + return; + } + + /* + * Factor of ten with the number of digits needed for the fractional + * part. For example, if the precision is 3, the mask will be 1000. + */ + mask = (UINTMAX_T)mypow10(precision); + /* + * We "cheat" by converting the fractional part to integer by + * multiplying by a factor of ten. + */ + if ((fracpart = myround(mask * (ufvalue - intpart))) >= mask) { + /* + * For example, ufvalue = 2.99962, intpart = 2, and mask = 1000 + * (because precision = 3). Now, myround(1000 * 0.99962) will + * return 1000. So, the integer part must be incremented by one + * and the fractional part must be set to zero. + */ + intpart++; + fracpart = 0; + if (estyle && intpart == 10) { + /* + * The value was rounded up to ten, but we only want one + * integer digit if using "e-style". So, the integer + * part must be set to one and the exponent must be + * incremented by one. + */ + intpart = 1; + exponent++; + } + } + + /* + * Now that we know the real exponent, we can check whether or not to + * use "e-style" for "%g" (and "%G") conversions. If we don't need + * "e-style", the precision must be adjusted and the integer and + * fractional parts must be recalculated from the original value. + * + * C99 says: "Let P equal the precision if nonzero, 6 if the precision + * is omitted, or 1 if the precision is zero. Then, if a conversion + * with style `E' would have an exponent of X: + * + * - if P > X >= -4, the conversion is with style `f' (or `F') and + * precision P - (X + 1). + * + * - otherwise, the conversion is with style `e' (or `E') and precision + * P - 1." (7.19.6.1, 8) + * + * Note that we had decremented the precision by one. + */ + if (flags & PRINT_F_TYPE_G && estyle && + precision + 1 > exponent && exponent >= -4) { + precision -= exponent; + estyle = 0; + goto again; + } + + if (estyle) { + if (exponent < 0) { + exponent = -exponent; + esign = '-'; + } else + esign = '+'; + + /* + * Convert the exponent. The sizeof(econvert) is 4. So, the + * econvert buffer can hold e.g. "e+99" and "e-99". We don't + * support an exponent which contains more than two digits. + * Therefore, the following stores are safe. + */ + epos = convert(exponent, econvert, 2, 10, 0); + /* + * C99 says: "The exponent always contains at least two digits, + * and only as many more digits as necessary to represent the + * exponent." (7.19.6.1, 8) + */ + if (epos == 1) + econvert[epos++] = '0'; + econvert[epos++] = esign; + econvert[epos++] = (flags & PRINT_F_UP) ? 'E' : 'e'; + } + + /* Convert the integer part and the fractional part. */ + ipos = convert(intpart, iconvert, sizeof(iconvert), 10, 0); + if (fracpart != 0) /* convert() would return 1 if fracpart == 0. */ + fpos = convert(fracpart, fconvert, sizeof(fconvert), 10, 0); + + leadfraczeros = precision - fpos; + + if (omitzeros) { + if (fpos > 0) /* Omit trailing fractional part zeros. */ + while (omitcount < fpos && fconvert[omitcount] == '0') + omitcount++; + else { /* The fractional part is zero, omit it completely. */ + omitcount = precision; + leadfraczeros = 0; + } + precision -= omitcount; + } + + /* + * Print a decimal point if either the fractional part is non-zero + * and/or the "#" flag was specified. + */ + if (precision > 0 || flags & PRINT_F_NUM) + emitpoint = 1; + if (separators) /* Get the number of group separators we'll print. */ + separators = getnumsep(ipos); + + padlen = width /* Minimum field width. */ + - ipos /* Number of integer digits. */ + - epos /* Number of exponent characters. */ + - precision /* Number of fractional digits. */ + - separators /* Number of group separators. */ + - (emitpoint ? 1 : 0) /* Will we print a decimal point? */ + - ((sign != 0) ? 1 : 0); /* Will we print a sign character? */ + + if (padlen < 0) + padlen = 0; + + /* + * C99 says: "If the `0' and `-' flags both appear, the `0' flag is + * ignored." (7.19.6.1, 6) + */ + if (flags & PRINT_F_MINUS) /* Left justifty. */ + padlen = -padlen; + else if (flags & PRINT_F_ZERO && padlen > 0) { + if (sign != 0) { /* Sign. */ + OUTCHAR(str, *len, size, sign); + sign = 0; + } + while (padlen > 0) { /* Leading zeros. */ + OUTCHAR(str, *len, size, '0'); + padlen--; + } + } + while (padlen > 0) { /* Leading spaces. */ + OUTCHAR(str, *len, size, ' '); + padlen--; + } + if (sign != 0) /* Sign. */ + OUTCHAR(str, *len, size, sign); + while (ipos > 0) { /* Integer part. */ + ipos--; + OUTCHAR(str, *len, size, iconvert[ipos]); + if (separators > 0 && ipos > 0 && ipos % 3 == 0) + printsep(str, len, size); + } + if (emitpoint) { /* Decimal point. */ +#if HAVE_LOCALECONV && HAVE_LCONV_DECIMAL_POINT + if (lc->decimal_point != NULL && *lc->decimal_point != '\0') + OUTCHAR(str, *len, size, *lc->decimal_point); + else /* We'll always print some decimal point character. */ +#endif /* HAVE_LOCALECONV && HAVE_LCONV_DECIMAL_POINT */ + OUTCHAR(str, *len, size, '.'); + } + while (leadfraczeros > 0) { /* Leading fractional part zeros. */ + OUTCHAR(str, *len, size, '0'); + leadfraczeros--; + } + while (fpos > omitcount) { /* The remaining fractional part. */ + fpos--; + OUTCHAR(str, *len, size, fconvert[fpos]); + } + while (epos > 0) { /* Exponent. */ + epos--; + OUTCHAR(str, *len, size, econvert[epos]); + } + while (padlen < 0) { /* Trailing spaces. */ + OUTCHAR(str, *len, size, ' '); + padlen++; + } +} + +static void +printsep(char *str, size_t *len, size_t size) +{ +#if HAVE_LOCALECONV && HAVE_LCONV_THOUSANDS_SEP + struct lconv *lc = localeconv(); + int i; + + if (lc->thousands_sep != NULL) + for (i = 0; lc->thousands_sep[i] != '\0'; i++) + OUTCHAR(str, *len, size, lc->thousands_sep[i]); + else +#endif /* HAVE_LOCALECONV && HAVE_LCONV_THOUSANDS_SEP */ + OUTCHAR(str, *len, size, ','); +} + +static int +getnumsep(int digits) +{ + int separators = (digits - ((digits % 3 == 0) ? 1 : 0)) / 3; +#if HAVE_LOCALECONV && HAVE_LCONV_THOUSANDS_SEP + int strln; + struct lconv *lc = localeconv(); + + /* We support an arbitrary separator length (including zero). */ + if (lc->thousands_sep != NULL) { + for (strln = 0; lc->thousands_sep[strln] != '\0'; strln++) + continue; + separators *= strln; + } +#endif /* HAVE_LOCALECONV && HAVE_LCONV_THOUSANDS_SEP */ + return separators; +} + +static int +getexponent(LDOUBLE value) +{ + LDOUBLE tmp = (value >= 0.0) ? value : -value; + int exponent = 0; + + /* + * We check for 99 > exponent > -99 in order to work around possible + * endless loops which could happen (at least) in the second loop (at + * least) if we're called with an infinite value. However, we checked + * for infinity before calling this function using our ISINF() macro, so + * this might be somewhat paranoid. + */ + while (tmp < 1.0 && tmp > 0.0 && --exponent > -99) + tmp *= 10; + while (tmp >= 10.0 && ++exponent < 99) + tmp /= 10; + + return exponent; +} + +static int +convert(UINTMAX_T value, char *buf, size_t size, int base, int caps) +{ + const char *digits = caps ? "0123456789ABCDEF" : "0123456789abcdef"; + size_t pos = 0; + + /* We return an unterminated buffer with the digits in reverse order. */ + do { + buf[pos++] = digits[value % base]; + value /= base; + } while (value != 0 && pos < size); + + return (int)pos; +} + +static UINTMAX_T +cast(LDOUBLE value) +{ + UINTMAX_T result; + + /* + * We check for ">=" and not for ">" because if UINTMAX_MAX cannot be + * represented exactly as an LDOUBLE value (but is less than LDBL_MAX), + * it may be increased to the nearest higher representable value for the + * comparison (cf. C99: 6.3.1.4, 2). It might then equal the LDOUBLE + * value although converting the latter to UINTMAX_T would overflow. + */ + if (value >= UINTMAX_MAX) + return UINTMAX_MAX; + + result = (UINTMAX_T)value; + /* + * At least on NetBSD/sparc64 3.0.2 and 4.99.30, casting long double to + * an integer type converts e.g. 1.9 to 2 instead of 1 (which violates + * the standard). Sigh. + */ + return (result <= value) ? result : result - 1; +} + +static UINTMAX_T +myround(LDOUBLE value) +{ + UINTMAX_T intpart = cast(value); + + return ((value -= intpart) < 0.5) ? intpart : intpart + 1; +} + +static LDOUBLE +mypow10(int exponent) +{ + LDOUBLE result = 1; + + while (exponent > 0) { + result *= 10; + exponent--; + } + while (exponent < 0) { + result /= 10; + exponent++; + } + return result; +} +#endif /* !HAVE_VSNPRINTF */ + +#if !HAVE_VASPRINTF +#if NEED_MYMEMCPY +void * +mymemcpy(void *dst, void *src, size_t len) +{ + const char *from = src; + char *to = dst; + + /* No need for optimization, we use this only to replace va_copy(3). */ + while (len-- > 0) + *to++ = *from++; + return dst; +} +#endif /* NEED_MYMEMCPY */ + +int +rpl_vasprintf(char **ret, const char *format, va_list ap) +{ + size_t size; + int len; + va_list aq; + + VA_COPY(aq, ap); + len = vsnprintf(NULL, 0, format, aq); + VA_END_COPY(aq); + if (len < 0 || (*ret = malloc(size = len + 1)) == NULL) + return -1; + return vsnprintf(*ret, size, format, ap); +} +#endif /* !HAVE_VASPRINTF */ + +#if !HAVE_SNPRINTF +#if HAVE_STDARG_H +int +rpl_snprintf(char *str, size_t size, const char *format, ...) +#else +int +rpl_snprintf(va_alist) va_dcl +#endif /* HAVE_STDARG_H */ +{ +#if !HAVE_STDARG_H + char *str; + size_t size; + char *format; +#endif /* HAVE_STDARG_H */ + va_list ap; + int len; + + VA_START(ap, format); + VA_SHIFT(ap, str, char *); + VA_SHIFT(ap, size, size_t); + VA_SHIFT(ap, format, const char *); + len = vsnprintf(str, size, format, ap); + va_end(ap); + return len; +} +#endif /* !HAVE_SNPRINTF */ + +#if !HAVE_ASPRINTF +#if HAVE_STDARG_H +int +rpl_asprintf(char **ret, const char *format, ...) +#else +int +rpl_asprintf(va_alist) va_dcl +#endif /* HAVE_STDARG_H */ +{ +#if !HAVE_STDARG_H + char **ret; + char *format; +#endif /* HAVE_STDARG_H */ + va_list ap; + int len; + + VA_START(ap, format); + VA_SHIFT(ap, ret, char **); + VA_SHIFT(ap, format, const char *); + len = vasprintf(ret, format, ap); + va_end(ap); + return len; +} +#endif /* !HAVE_ASPRINTF */ +#else /* Dummy declaration to avoid empty translation unit warnings. */ +int main(void); +#endif /* !HAVE_SNPRINTF || !HAVE_VSNPRINTF || !HAVE_ASPRINTF || [...] */ + + +/* vim: set joinspaces textwidth=80: */ |