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linux-user: Populate more bits in mmap_flags_tbl 

Fix translation of TARGET_MAP_SHARED and TARGET_MAP_PRIVATE,
which are types not single bits.  Add TARGET_MAP_SHARED_VALIDATE,
TARGET_MAP_SYNC, TARGET_MAP_NONBLOCK, TARGET_MAP_POPULATE,
TARGET_MAP_FIXED_NOREPLACE, and TARGET_MAP_UNINITIALIZED.

Update strace to match.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230707204054.8792-9-richard.henderson@linaro.org>
master
Richard Henderson 2023-07-07 21:40:36 +01:00
parent 6edfca9eae
commit 4b840f9609
2 changed files with 29 additions and 15 deletions
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23
linux-user/strace.c
View File

@ -1094,28 +1094,25 @@ UNUSED static const struct flags mmap_prot_flags[] = {
};
UNUSED static const struct flags mmap_flags[] = {
FLAG_TARGET(MAP_SHARED),
FLAG_TARGET(MAP_PRIVATE),
FLAG_TARGET_MASK(MAP_SHARED, MAP_TYPE),
FLAG_TARGET_MASK(MAP_PRIVATE, MAP_TYPE),
FLAG_TARGET_MASK(MAP_SHARED_VALIDATE, MAP_TYPE),
FLAG_TARGET(MAP_ANONYMOUS),
FLAG_TARGET(MAP_DENYWRITE),
FLAG_TARGET(MAP_FIXED),
FLAG_TARGET(MAP_GROWSDOWN),
FLAG_TARGET(MAP_EXECUTABLE),
#ifdef MAP_LOCKED
FLAG_TARGET(MAP_FIXED),
FLAG_TARGET(MAP_FIXED_NOREPLACE),
FLAG_TARGET(MAP_GROWSDOWN),
FLAG_TARGET(MAP_HUGETLB),
FLAG_TARGET(MAP_LOCKED),
#endif
#ifdef MAP_NONBLOCK
FLAG_TARGET(MAP_NONBLOCK),
#endif
FLAG_TARGET(MAP_NORESERVE),
#ifdef MAP_POPULATE
FLAG_TARGET(MAP_POPULATE),
#endif
#if defined(TARGET_MAP_UNINITIALIZED) && TARGET_MAP_UNINITIALIZED != 0
FLAG_TARGET(MAP_STACK),
FLAG_TARGET(MAP_SYNC),
#if TARGET_MAP_UNINITIALIZED != 0
FLAG_TARGET(MAP_UNINITIALIZED),
#endif
FLAG_TARGET(MAP_HUGETLB),
FLAG_TARGET(MAP_STACK),
FLAG_END,
};

21
linux-user/syscall.c
View File

@ -6012,9 +6012,19 @@ static const StructEntry struct_termios_def = {
.print = print_termios,
};
/* If the host does not provide these bits, they may be safely discarded. */
#ifndef MAP_SYNC
#define MAP_SYNC 0
#endif
#ifndef MAP_UNINITIALIZED
#define MAP_UNINITIALIZED 0
#endif
static const bitmask_transtbl mmap_flags_tbl[] = {
{ TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
{ TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
{ TARGET_MAP_TYPE, TARGET_MAP_SHARED, MAP_TYPE, MAP_SHARED },
{ TARGET_MAP_TYPE, TARGET_MAP_PRIVATE, MAP_TYPE, MAP_PRIVATE },
{ TARGET_MAP_TYPE, TARGET_MAP_SHARED_VALIDATE,
MAP_TYPE, MAP_SHARED_VALIDATE },
{ TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
{ TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
MAP_ANONYMOUS, MAP_ANONYMOUS },
@ -6032,6 +6042,13 @@ static const bitmask_transtbl mmap_flags_tbl[] = {
Recognize it for the target insofar as we do not want to pass
it through to the host. */
{ TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
{ TARGET_MAP_SYNC, TARGET_MAP_SYNC, MAP_SYNC, MAP_SYNC },
{ TARGET_MAP_NONBLOCK, TARGET_MAP_NONBLOCK, MAP_NONBLOCK, MAP_NONBLOCK },
{ TARGET_MAP_POPULATE, TARGET_MAP_POPULATE, MAP_POPULATE, MAP_POPULATE },
{ TARGET_MAP_FIXED_NOREPLACE, TARGET_MAP_FIXED_NOREPLACE,
MAP_FIXED_NOREPLACE, MAP_FIXED_NOREPLACE },
{ TARGET_MAP_UNINITIALIZED, TARGET_MAP_UNINITIALIZED,
MAP_UNINITIALIZED, MAP_UNINITIALIZED },
{ 0, 0, 0, 0 }
};