diff options
| -rw-r--r-- | bsd-user/freebsd/os-sys.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/bsd-user/freebsd/os-sys.c b/bsd-user/freebsd/os-sys.c index 1676ec10f8..a4f3fd8091 100644 --- a/bsd-user/freebsd/os-sys.c +++ b/bsd-user/freebsd/os-sys.c @@ -21,6 +21,92 @@ #include "qemu.h" #include "target_arch_sysarch.h" +#include <sys/sysctl.h> + +/* + * Length for the fixed length types. + * 0 means variable length for strings and structures + * Compare with sys/kern_sysctl.c ctl_size + * Note: Not all types appear to be used in-tree. + */ +static const int G_GNUC_UNUSED guest_ctl_size[CTLTYPE + 1] = { + [CTLTYPE_INT] = sizeof(abi_int), + [CTLTYPE_UINT] = sizeof(abi_uint), + [CTLTYPE_LONG] = sizeof(abi_long), + [CTLTYPE_ULONG] = sizeof(abi_ulong), + [CTLTYPE_S8] = sizeof(int8_t), + [CTLTYPE_S16] = sizeof(int16_t), + [CTLTYPE_S32] = sizeof(int32_t), + [CTLTYPE_S64] = sizeof(int64_t), + [CTLTYPE_U8] = sizeof(uint8_t), + [CTLTYPE_U16] = sizeof(uint16_t), + [CTLTYPE_U32] = sizeof(uint32_t), + [CTLTYPE_U64] = sizeof(uint64_t), +}; + +static const int G_GNUC_UNUSED host_ctl_size[CTLTYPE + 1] = { + [CTLTYPE_INT] = sizeof(int), + [CTLTYPE_UINT] = sizeof(u_int), + [CTLTYPE_LONG] = sizeof(long), + [CTLTYPE_ULONG] = sizeof(u_long), + [CTLTYPE_S8] = sizeof(int8_t), + [CTLTYPE_S16] = sizeof(int16_t), + [CTLTYPE_S32] = sizeof(int32_t), + [CTLTYPE_S64] = sizeof(int64_t), + [CTLTYPE_U8] = sizeof(uint8_t), + [CTLTYPE_U16] = sizeof(uint16_t), + [CTLTYPE_U32] = sizeof(uint32_t), + [CTLTYPE_U64] = sizeof(uint64_t), +}; + +#ifdef TARGET_ABI32 +/* + * Limit the amount of available memory to be most of the 32-bit address + * space. 0x100c000 was arrived at through trial and error as a good + * definition of 'most'. + */ +static const abi_ulong guest_max_mem = UINT32_MAX - 0x100c000 + 1; + +static abi_ulong G_GNUC_UNUSED cap_memory(uint64_t mem) +{ + return MIN(guest_max_mem, mem); +} +#endif + +static abi_ulong G_GNUC_UNUSED scale_to_guest_pages(uint64_t pages) +{ + /* Scale pages from host to guest */ + pages = muldiv64(pages, qemu_real_host_page_size(), TARGET_PAGE_SIZE); +#ifdef TARGET_ABI32 + /* cap pages if need be */ + pages = MIN(pages, guest_max_mem / (abi_ulong)TARGET_PAGE_SIZE); +#endif + return pages; +} + +#ifdef TARGET_ABI32 +/* Used only for TARGET_ABI32 */ +static abi_long G_GNUC_UNUSED h2g_long_sat(long l) +{ + if (l > INT32_MAX) { + l = INT32_MAX; + } else if (l < INT32_MIN) { + l = INT32_MIN; + } + return l; +} + +static abi_ulong G_GNUC_UNUSED h2g_ulong_sat(u_long ul) +{ + return MIN(ul, UINT32_MAX); +} +#endif + +/* + * placeholder until bsd-user downstream upstreams this with its thread support + */ +#define bsd_get_ncpu() 1 + /* sysarch() is architecture dependent. */ abi_long do_freebsd_sysarch(void *cpu_env, abi_long arg1, abi_long arg2) { |