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linux-user: Implement stracing madvise()

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The default implementation has several problems: the first argument is
not displayed as a pointer, making it harder to grep; the third
argument is not symbolized; and there are several extra unused
arguments.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220906000839.1672934-4-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Ilya Leoshkevich 2022-09-06 02:08:37 +02:00 committed by Laurent Vivier
parent 8655b4c709
commit 375ce49be2
2 changed files with 42 additions and 1 deletions
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41
linux-user/strace.c
View File

@ -18,6 +18,7 @@
#include "user-internals.h"
#include "strace.h"
#include "signal-common.h"
#include "target_mman.h"
struct syscallname {
int nr;
@ -3019,6 +3020,46 @@ print_stat(CPUArchState *cpu_env, const struct syscallname *name,
#define print_lstat64 print_stat
#endif
#if defined(TARGET_NR_madvise)
static struct enums madvise_advice[] = {
ENUM_TARGET(MADV_NORMAL),
ENUM_TARGET(MADV_RANDOM),
ENUM_TARGET(MADV_SEQUENTIAL),
ENUM_TARGET(MADV_WILLNEED),
ENUM_TARGET(MADV_DONTNEED),
ENUM_TARGET(MADV_FREE),
ENUM_TARGET(MADV_REMOVE),
ENUM_TARGET(MADV_DONTFORK),
ENUM_TARGET(MADV_DOFORK),
ENUM_TARGET(MADV_MERGEABLE),
ENUM_TARGET(MADV_UNMERGEABLE),
ENUM_TARGET(MADV_HUGEPAGE),
ENUM_TARGET(MADV_NOHUGEPAGE),
ENUM_TARGET(MADV_DONTDUMP),
ENUM_TARGET(MADV_DODUMP),
ENUM_TARGET(MADV_WIPEONFORK),
ENUM_TARGET(MADV_KEEPONFORK),
ENUM_TARGET(MADV_COLD),
ENUM_TARGET(MADV_PAGEOUT),
ENUM_TARGET(MADV_POPULATE_READ),
ENUM_TARGET(MADV_POPULATE_WRITE),
ENUM_TARGET(MADV_DONTNEED_LOCKED),
ENUM_END,
};
static void
print_madvise(CPUArchState *cpu_env, const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_pointer(arg0, 0);
print_raw_param("%d", arg1, 0);
print_enums(madvise_advice, arg2, 1);
print_syscall_epilogue(name);
}
#endif
#if defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64)
static void
print_fstat(CPUArchState *cpu_env, const struct syscallname *name,

2
linux-user/strace.list
View File

@ -542,7 +542,7 @@
{ TARGET_NR_lstat64, "lstat64" , NULL, print_lstat64, NULL },
#endif
#ifdef TARGET_NR_madvise
{ TARGET_NR_madvise, "madvise" , NULL, NULL, NULL },
{ TARGET_NR_madvise, "madvise" , NULL, print_madvise, NULL },
#endif
#ifdef TARGET_NR_madvise1
{ TARGET_NR_madvise1, "madvise1" , NULL, NULL, NULL },