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-rw-r--r--include/elf.h73
-rw-r--r--include/qemu/cache-utils.h4
-rw-r--r--include/qemu/osdep.h25
-rw-r--r--linux-user/main.c35
-rw-r--r--tcg/arm/tcg-target.c14
-rw-r--r--tcg/ppc64/tcg-target.c11
-rw-r--r--tcg/s390/tcg-target.c95
-rw-r--r--util/Makefile.objs1
-rw-r--r--util/cache-utils.c51
-rw-r--r--util/getauxval.c74
-rw-r--r--vl.c3
11 files changed, 224 insertions, 162 deletions
diff --git a/include/elf.h b/include/elf.h
index b818091c7b..667af6fc63 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -411,6 +411,65 @@ typedef struct {
#define R_SPARC_5 44
#define R_SPARC_6 45
+/* Bits present in AT_HWCAP for ARM. */
+
+#define HWCAP_ARM_SWP (1 << 0)
+#define HWCAP_ARM_HALF (1 << 1)
+#define HWCAP_ARM_THUMB (1 << 2)
+#define HWCAP_ARM_26BIT (1 << 3)
+#define HWCAP_ARM_FAST_MULT (1 << 4)
+#define HWCAP_ARM_FPA (1 << 5)
+#define HWCAP_ARM_VFP (1 << 6)
+#define HWCAP_ARM_EDSP (1 << 7)
+#define HWCAP_ARM_JAVA (1 << 8)
+#define HWCAP_ARM_IWMMXT (1 << 9)
+#define HWCAP_ARM_CRUNCH (1 << 10)
+#define HWCAP_ARM_THUMBEE (1 << 11)
+#define HWCAP_ARM_NEON (1 << 12)
+#define HWCAP_ARM_VFPv3 (1 << 13)
+#define HWCAP_ARM_VFPv3D16 (1 << 14) /* also set for VFPv4-D16 */
+#define HWCAP_ARM_TLS (1 << 15)
+#define HWCAP_ARM_VFPv4 (1 << 16)
+#define HWCAP_ARM_IDIVA (1 << 17)
+#define HWCAP_ARM_IDIVT (1 << 18)
+#define HWCAP_IDIV (HWCAP_IDIVA | HWCAP_IDIVT)
+#define HWCAP_VFPD32 (1 << 19) /* set if VFP has 32 regs */
+#define HWCAP_LPAE (1 << 20)
+
+/* Bits present in AT_HWCAP for PowerPC. */
+
+#define PPC_FEATURE_32 0x80000000
+#define PPC_FEATURE_64 0x40000000
+#define PPC_FEATURE_601_INSTR 0x20000000
+#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
+#define PPC_FEATURE_HAS_FPU 0x08000000
+#define PPC_FEATURE_HAS_MMU 0x04000000
+#define PPC_FEATURE_HAS_4xxMAC 0x02000000
+#define PPC_FEATURE_UNIFIED_CACHE 0x01000000
+#define PPC_FEATURE_HAS_SPE 0x00800000
+#define PPC_FEATURE_HAS_EFP_SINGLE 0x00400000
+#define PPC_FEATURE_HAS_EFP_DOUBLE 0x00200000
+#define PPC_FEATURE_NO_TB 0x00100000
+#define PPC_FEATURE_POWER4 0x00080000
+#define PPC_FEATURE_POWER5 0x00040000
+#define PPC_FEATURE_POWER5_PLUS 0x00020000
+#define PPC_FEATURE_CELL 0x00010000
+#define PPC_FEATURE_BOOKE 0x00008000
+#define PPC_FEATURE_SMT 0x00004000
+#define PPC_FEATURE_ICACHE_SNOOP 0x00002000
+#define PPC_FEATURE_ARCH_2_05 0x00001000
+#define PPC_FEATURE_PA6T 0x00000800
+#define PPC_FEATURE_HAS_DFP 0x00000400
+#define PPC_FEATURE_POWER6_EXT 0x00000200
+#define PPC_FEATURE_ARCH_2_06 0x00000100
+#define PPC_FEATURE_HAS_VSX 0x00000080
+
+#define PPC_FEATURE_PSERIES_PERFMON_COMPAT \
+ 0x00000040
+
+#define PPC_FEATURE_TRUE_LE 0x00000002
+#define PPC_FEATURE_PPC_LE 0x00000001
+
/* Bits present in AT_HWCAP, primarily for Sparc32. */
#define HWCAP_SPARC_FLUSH 1 /* CPU supports flush instruction. */
@@ -420,6 +479,20 @@ typedef struct {
#define HWCAP_SPARC_V9 16
#define HWCAP_SPARC_ULTRA3 32
+/* Bits present in AT_HWCAP for s390. */
+
+#define HWCAP_S390_ESAN3 1
+#define HWCAP_S390_ZARCH 2
+#define HWCAP_S390_STFLE 4
+#define HWCAP_S390_MSA 8
+#define HWCAP_S390_LDISP 16
+#define HWCAP_S390_EIMM 32
+#define HWCAP_S390_DFP 64
+#define HWCAP_S390_HPAGE 128
+#define HWCAP_S390_ETF3EH 256
+#define HWCAP_S390_HIGH_GPRS 512
+#define HWCAP_S390_TE 1024
+
/*
* 68k ELF relocation types
*/
diff --git a/include/qemu/cache-utils.h b/include/qemu/cache-utils.h
index 2c57f78fc1..211245bea0 100644
--- a/include/qemu/cache-utils.h
+++ b/include/qemu/cache-utils.h
@@ -12,7 +12,7 @@ struct qemu_cache_conf {
extern struct qemu_cache_conf qemu_cache_conf;
-void qemu_cache_utils_init(char **envp);
+void qemu_cache_utils_init(void);
/* mildly adjusted code from tcg-dyngen.c */
static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
@@ -38,7 +38,7 @@ static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
}
#else
-#define qemu_cache_utils_init(envp) do { (void) (envp); } while (0)
+#define qemu_cache_utils_init() do { } while (0)
#endif
#endif /* QEMU_CACHE_UTILS_H */
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 26136f16ec..b3e2b6d8ea 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -215,4 +215,29 @@ bool fips_get_state(void);
*/
char *qemu_get_local_state_pathname(const char *relative_pathname);
+/**
+ * qemu_getauxval:
+ * @type: the auxiliary vector key to lookup
+ *
+ * Search the auxiliary vector for @type, returning the value
+ * or 0 if @type is not present.
+ */
+#if defined(CONFIG_GETAUXVAL) || defined(__linux__)
+unsigned long qemu_getauxval(unsigned long type);
+#else
+static inline unsigned long qemu_getauxval(unsigned long type) { return 0; }
+#endif
+
+/**
+ * qemu_init_auxval:
+ * @envp: the third argument to main
+ *
+ * If supported and required, locate the auxiliary vector at program startup.
+ */
+#if defined(CONFIG_GETAUXVAL) || !defined(__linux__)
+static inline void qemu_init_auxval(char **envp) { }
+#else
+void qemu_init_auxval(char **envp);
+#endif
+
#endif
diff --git a/linux-user/main.c b/linux-user/main.c
index 6b4ab0930e..54f71fe8f6 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3663,26 +3663,6 @@ static int parse_args(int argc, char **argv)
return optind;
}
-static int get_execfd(char **envp)
-{
- typedef struct {
- long a_type;
- long a_val;
- } auxv_t;
- auxv_t *auxv;
-
- while (*envp++ != NULL) {
- ;
- }
-
- for (auxv = (auxv_t *)envp; auxv->a_type != AT_NULL; auxv++) {
- if (auxv->a_type == AT_EXECFD) {
- return auxv->a_val;
- }
- }
- return -1;
-}
-
int main(int argc, char **argv, char **envp)
{
struct target_pt_regs regs1, *regs = &regs1;
@@ -3701,7 +3681,8 @@ int main(int argc, char **argv, char **envp)
module_call_init(MODULE_INIT_QOM);
- qemu_cache_utils_init(envp);
+ qemu_init_auxval(envp);
+ qemu_cache_utils_init();
if ((envlist = envlist_create()) == NULL) {
(void) fprintf(stderr, "Unable to allocate envlist\n");
@@ -3875,13 +3856,13 @@ int main(int argc, char **argv, char **envp)
env->opaque = ts;
task_settid(ts);
- execfd = get_execfd(envp);
- if (execfd < 0) {
+ execfd = qemu_getauxval(AT_EXECFD);
+ if (execfd == 0) {
execfd = open(filename, O_RDONLY);
- }
- if (execfd < 0) {
- printf("Error while loading %s: %s\n", filename, strerror(-execfd));
- _exit(1);
+ if (execfd < 0) {
+ printf("Error while loading %s: %s\n", filename, strerror(errno));
+ _exit(1);
+ }
}
ret = loader_exec(execfd, filename, target_argv, target_environ, regs,
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c
index e93a4a237b..82658a170c 100644
--- a/tcg/arm/tcg-target.c
+++ b/tcg/arm/tcg-target.c
@@ -22,6 +22,7 @@
* THE SOFTWARE.
*/
+#include "elf.h"
#include "tcg-be-ldst.h"
/* The __ARM_ARCH define is provided by gcc 4.8. Construct it otherwise. */
@@ -58,9 +59,6 @@ static int arm_arch = __ARM_ARCH;
#ifndef use_idiv_instructions
bool use_idiv_instructions;
#endif
-#ifdef CONFIG_GETAUXVAL
-# include <sys/auxv.h>
-#endif
#ifndef NDEBUG
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
@@ -2036,22 +2034,20 @@ static const TCGTargetOpDef arm_op_defs[] = {
static void tcg_target_init(TCGContext *s)
{
-#if defined(CONFIG_GETAUXVAL)
/* Only probe for the platform and capabilities if we havn't already
determined maximum values at compile time. */
-# if !defined(use_idiv_instructions)
+#ifndef use_idiv_instructions
{
- unsigned long hwcap = getauxval(AT_HWCAP);
+ unsigned long hwcap = qemu_getauxval(AT_HWCAP);
use_idiv_instructions = (hwcap & HWCAP_ARM_IDIVA) != 0;
}
-# endif
+#endif
if (__ARM_ARCH < 7) {
- const char *pl = (const char *)getauxval(AT_PLATFORM);
+ const char *pl = (const char *)qemu_getauxval(AT_PLATFORM);
if (pl != NULL && pl[0] == 'v' && pl[1] >= '4' && pl[1] <= '9') {
arm_arch = pl[1] - '0';
}
}
-#endif /* GETAUXVAL */
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff);
tcg_regset_set32(tcg_target_call_clobber_regs, 0,
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index 6109d862db..06e440f9bc 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -45,15 +45,10 @@ static uint8_t *tb_ret_addr;
#define GUEST_BASE 0
#endif
-#ifdef CONFIG_GETAUXVAL
-#include <sys/auxv.h>
+#include "elf.h"
static bool have_isa_2_06;
#define HAVE_ISA_2_06 have_isa_2_06
#define HAVE_ISEL have_isa_2_06
-#else
-#define HAVE_ISA_2_06 0
-#define HAVE_ISEL 0
-#endif
#ifdef CONFIG_USE_GUEST_BASE
#define TCG_GUEST_BASE_REG 30
@@ -2132,12 +2127,10 @@ static const TCGTargetOpDef ppc_op_defs[] = {
static void tcg_target_init(TCGContext *s)
{
-#ifdef CONFIG_GETAUXVAL
- unsigned long hwcap = getauxval(AT_HWCAP);
+ unsigned long hwcap = qemu_getauxval(AT_HWCAP);
if (hwcap & PPC_FEATURE_ARCH_2_06) {
have_isa_2_06 = true;
}
-#endif
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff);
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
diff --git a/tcg/s390/tcg-target.c b/tcg/s390/tcg-target.c
index 0a4f3be0e9..248726e82f 100644
--- a/tcg/s390/tcg-target.c
+++ b/tcg/s390/tcg-target.c
@@ -31,6 +31,8 @@
#error "unsupported code generation mode"
#endif
+#include "elf.h"
+
/* ??? The translation blocks produced by TCG are generally small enough to
be entirely reachable with a 16-bit displacement. Leaving the option for
a 32-bit displacement here Just In Case. */
@@ -2233,91 +2235,18 @@ static void sigill_handler(int sig)
static void query_facilities(void)
{
- struct sigaction sa_old, sa_new;
- register int r0 __asm__("0");
- register void *r1 __asm__("1");
- int fail;
-
- memset(&sa_new, 0, sizeof(sa_new));
- sa_new.sa_handler = sigill_handler;
- sigaction(SIGILL, &sa_new, &sa_old);
-
- /* First, try STORE FACILITY LIST EXTENDED. If this is present, then
- we need not do any more probing. Unfortunately, this itself is an
- extension and the original STORE FACILITY LIST instruction is
- kernel-only, storing its results at absolute address 200. */
- /* stfle 0(%r1) */
- r1 = &facilities;
- asm volatile(".word 0xb2b0,0x1000"
- : "=r"(r0) : "0"(0), "r"(r1) : "memory", "cc");
-
- if (got_sigill) {
- /* STORE FACILITY EXTENDED is not available. Probe for one of each
- kind of instruction that we're interested in. */
- /* ??? Possibly some of these are in practice never present unless
- the store-facility-extended facility is also present. But since
- that isn't documented it's just better to probe for each. */
-
- /* Test for z/Architecture. Required even in 31-bit mode. */
- got_sigill = 0;
- /* agr %r0,%r0 */
- asm volatile(".word 0xb908,0x0000" : "=r"(r0) : : "cc");
- if (!got_sigill) {
- facilities |= FACILITY_ZARCH_ACTIVE;
- }
-
- /* Test for long displacement. */
- got_sigill = 0;
- /* ly %r0,0(%r1) */
- r1 = &facilities;
- asm volatile(".word 0xe300,0x1000,0x0058"
- : "=r"(r0) : "r"(r1) : "cc");
- if (!got_sigill) {
- facilities |= FACILITY_LONG_DISP;
- }
-
- /* Test for extended immediates. */
- got_sigill = 0;
- /* afi %r0,0 */
- asm volatile(".word 0xc209,0x0000,0x0000" : : : "cc");
- if (!got_sigill) {
- facilities |= FACILITY_EXT_IMM;
- }
-
- /* Test for general-instructions-extension. */
- got_sigill = 0;
- /* msfi %r0,1 */
- asm volatile(".word 0xc201,0x0000,0x0001");
- if (!got_sigill) {
- facilities |= FACILITY_GEN_INST_EXT;
- }
- }
-
- sigaction(SIGILL, &sa_old, NULL);
+ unsigned long hwcap = qemu_getauxval(AT_HWCAP);
- /* The translator currently uses these extensions unconditionally.
- Pruning this back to the base ESA/390 architecture doesn't seem
- worthwhile, since even the KVM target requires z/Arch. */
- fail = 0;
- if ((facilities & FACILITY_ZARCH_ACTIVE) == 0) {
- fprintf(stderr, "TCG: z/Arch facility is required.\n");
- fprintf(stderr, "TCG: Boot with a 64-bit enabled kernel.\n");
- fail = 1;
- }
- if ((facilities & FACILITY_LONG_DISP) == 0) {
- fprintf(stderr, "TCG: long-displacement facility is required.\n");
- fail = 1;
- }
+ /* Is STORE FACILITY LIST EXTENDED available? Honestly, I believe this
+ is present on all 64-bit systems, but let's check for it anyway. */
+ if (hwcap & HWCAP_S390_STFLE) {
+ register int r0 __asm__("0");
+ register void *r1 __asm__("1");
- /* So far there's just enough support for 31-bit mode to let the
- compile succeed. This is good enough to run QEMU with KVM. */
- if (sizeof(void *) != 8) {
- fprintf(stderr, "TCG: 31-bit mode is not supported.\n");
- fail = 1;
- }
-
- if (fail) {
- exit(-1);
+ /* stfle 0(%r1) */
+ r1 = &facilities;
+ asm volatile(".word 0xb2b0,0x1000"
+ : "=r"(r0) : "0"(0), "r"(r1) : "memory", "cc");
}
}
diff --git a/util/Makefile.objs b/util/Makefile.objs
index 2bb13a2a59..af3e5cb157 100644
--- a/util/Makefile.objs
+++ b/util/Makefile.objs
@@ -12,3 +12,4 @@ util-obj-y += qemu-option.o qemu-progress.o
util-obj-y += hexdump.o
util-obj-y += crc32c.o
util-obj-y += throttle.o
+util-obj-y += getauxval.o
diff --git a/util/cache-utils.c b/util/cache-utils.c
index b94013a8cb..047003008b 100644
--- a/util/cache-utils.c
+++ b/util/cache-utils.c
@@ -1,3 +1,4 @@
+#include "qemu-common.h"
#include "qemu/cache-utils.h"
#if defined(_ARCH_PPC)
@@ -9,31 +10,33 @@ struct qemu_cache_conf qemu_cache_conf = {
#if defined _AIX
#include <sys/systemcfg.h>
-static void ppc_init_cacheline_sizes(void)
+void qemu_cache_utils_init(void)
{
qemu_cache_conf.icache_bsize = _system_configuration.icache_line;
qemu_cache_conf.dcache_bsize = _system_configuration.dcache_line;
}
#elif defined __linux__
+#include "qemu/osdep.h"
+#include "elf.h"
-#define QEMU_AT_NULL 0
-#define QEMU_AT_DCACHEBSIZE 19
-#define QEMU_AT_ICACHEBSIZE 20
-
-static void ppc_init_cacheline_sizes(char **envp)
+void qemu_cache_utils_init(void)
{
- unsigned long *auxv;
-
- while (*envp++);
+ unsigned long dsize = qemu_getauxval(AT_DCACHEBSIZE);
+ unsigned long isize = qemu_getauxval(AT_ICACHEBSIZE);
- for (auxv = (unsigned long *) envp; *auxv != QEMU_AT_NULL; auxv += 2) {
- switch (*auxv) {
- case QEMU_AT_DCACHEBSIZE: qemu_cache_conf.dcache_bsize = auxv[1]; break;
- case QEMU_AT_ICACHEBSIZE: qemu_cache_conf.icache_bsize = auxv[1]; break;
- default: break;
+ if (dsize == 0 || isize == 0) {
+ if (dsize == 0) {
+ fprintf(stderr, "getauxval AT_DCACHEBSIZE failed\n");
+ }
+ if (isize == 0) {
+ fprintf(stderr, "getauxval AT_ICACHEBSIZE failed\n");
}
+ exit(1);
+
}
+ qemu_cache_conf.dcache_bsize = dsize;
+ qemu_cache_conf.icache_bsize = isize;
}
#elif defined __APPLE__
@@ -41,7 +44,7 @@ static void ppc_init_cacheline_sizes(char **envp)
#include <sys/types.h>
#include <sys/sysctl.h>
-static void ppc_init_cacheline_sizes(void)
+void qemu_cache_utils_init(void)
{
size_t len;
unsigned cacheline;
@@ -55,9 +58,8 @@ static void ppc_init_cacheline_sizes(void)
qemu_cache_conf.icache_bsize = cacheline;
}
}
-#endif
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
@@ -65,7 +67,7 @@ static void ppc_init_cacheline_sizes(void)
#include <sys/types.h>
#include <sys/sysctl.h>
-static void ppc_init_cacheline_sizes(void)
+void qemu_cache_utils_init(void)
{
size_t len = 4;
unsigned cacheline;
@@ -81,17 +83,4 @@ static void ppc_init_cacheline_sizes(void)
}
#endif
-#ifdef __linux__
-void qemu_cache_utils_init(char **envp)
-{
- ppc_init_cacheline_sizes(envp);
-}
-#else
-void qemu_cache_utils_init(char **envp)
-{
- (void) envp;
- ppc_init_cacheline_sizes();
-}
-#endif
-
#endif /* _ARCH_PPC */
diff --git a/util/getauxval.c b/util/getauxval.c
new file mode 100644
index 0000000000..476c883b32
--- /dev/null
+++ b/util/getauxval.c
@@ -0,0 +1,74 @@
+/*
+ * QEMU access to the auxiliary vector
+ *
+ * Copyright (C) 2013 Red Hat, Inc
+ *
+ * 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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#include "qemu-common.h"
+#include "qemu/osdep.h"
+
+#ifdef CONFIG_GETAUXVAL
+/* Don't inline this in qemu/osdep.h, because pulling in <sys/auxv.h> for
+ the system declaration of getauxval pulls in the system <elf.h>, which
+ conflicts with qemu's version. */
+
+#include <sys/auxv.h>
+
+unsigned long qemu_getauxval(unsigned long key)
+{
+ return getauxval(key);
+}
+#elif defined(__linux__)
+#include "elf.h"
+
+/* Our elf.h doesn't contain Elf32_auxv_t and Elf64_auxv_t, which is ok because
+ that just makes it easier to define it properly for the host here. */
+typedef struct {
+ unsigned long a_type;
+ unsigned long a_val;
+} ElfW_auxv_t;
+
+static const ElfW_auxv_t *auxv;
+
+void qemu_init_auxval(char **envp)
+{
+ /* The auxiliary vector is located just beyond the initial environment. */
+ while (*envp++ != NULL) {
+ continue;
+ }
+ auxv = (const ElfW_auxv_t *)envp;
+}
+
+unsigned long qemu_getauxval(unsigned long type)
+{
+ /* If we were able to find the auxiliary vector, use it. */
+ if (auxv) {
+ const ElfW_auxv_t *a;
+ for (a = auxv; a->a_type != 0; a++) {
+ if (a->a_type == type) {
+ return a->a_val;
+ }
+ }
+ }
+
+ return 0;
+}
+#endif
diff --git a/vl.c b/vl.c
index 8d5d874e68..e2c94bf75d 100644
--- a/vl.c
+++ b/vl.c
@@ -2894,7 +2894,8 @@ int main(int argc, char **argv, char **envp)
init_clocks();
rtc_clock = QEMU_CLOCK_HOST;
- qemu_cache_utils_init(envp);
+ qemu_init_auxval(envp);
+ qemu_cache_utils_init();
QLIST_INIT (&vm_change_state_head);
os_setup_early_signal_handling();
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-13 10:46:09 +0000