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author | Alex Bennée <alex.bennee@linaro.org> | 2021-03-23 16:52:55 +0000 |
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committer | Alex Bennée <alex.bennee@linaro.org> | 2021-03-24 14:25:19 +0000 |
commit | 4593f4d7fa4460d082417cb50d7e5b49dad88f7e (patch) | |
tree | 514d6ba3bccf9b66b6d15dfb79f76696fa3dc12b /tests | |
parent | 7967d1da7af01c49661241c47708caa6dec78adb (diff) | |
download | qemu-4593f4d7fa4460d082417cb50d7e5b49dad88f7e.zip qemu-4593f4d7fa4460d082417cb50d7e5b49dad88f7e.tar.gz qemu-4593f4d7fa4460d082417cb50d7e5b49dad88f7e.tar.bz2 |
tests/tcg: add HeapInfo checking to semihosting test
Query the SYS_HEAPINFO semicall and do some basic verification of the
information via libc calls.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210323165308.15244-10-alex.bennee@linaro.org>
Diffstat (limited to 'tests')
-rw-r--r-- | tests/tcg/multiarch/arm-compat-semi/semihosting.c | 55 |
1 files changed, 54 insertions, 1 deletions
diff --git a/tests/tcg/multiarch/arm-compat-semi/semihosting.c b/tests/tcg/multiarch/arm-compat-semi/semihosting.c index b3fd16c..8627eee 100644 --- a/tests/tcg/multiarch/arm-compat-semi/semihosting.c +++ b/tests/tcg/multiarch/arm-compat-semi/semihosting.c @@ -8,9 +8,13 @@ */ #define SYS_WRITE0 0x04 +#define SYS_HEAPINFO 0x16 #define SYS_REPORTEXC 0x18 #include <stdint.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> #include "semicall.h" int main(int argc, char *argv[argc]) @@ -21,8 +25,57 @@ int main(int argc, char *argv[argc]) uintptr_t exit_block[2] = {0x20026, 0}; uintptr_t exit_code = (uintptr_t) &exit_block; #endif + struct { + void *heap_base; + void *heap_limit; + void *stack_base; + void *stack_limit; + } info; + void *ptr_to_info = (void *) &info; - __semi_call(SYS_WRITE0, (uintptr_t) "Hello World"); + __semi_call(SYS_WRITE0, (uintptr_t) "Checking HeapInfo\n"); + + memset(&info, 0, sizeof(info)); + __semi_call(SYS_HEAPINFO, (uintptr_t) &ptr_to_info); + + if (info.heap_base == NULL || info.heap_limit == NULL) { + printf("null heap: %p -> %p\n", info.heap_base, info.heap_limit); + exit(1); + } + + /* Error if heap base is above limit */ + if ((uintptr_t) info.heap_base >= (uintptr_t) info.heap_limit) { + printf("heap base %p >= heap_limit %p\n", + info.heap_base, info.heap_limit); + exit(2); + } + + if (info.stack_base == NULL || info.stack_limit) { + printf("null stack: %p -> %p\n", info.stack_base, info.stack_limit); + exit(3); + } + + /* check our local variables are indeed inside the reported stack */ + if (ptr_to_info > info.stack_base) { + printf("info appears to be above stack: %p > %p\n", ptr_to_info, + info.stack_base); + exit(4); + } else if (ptr_to_info < info.stack_limit) { + printf("info appears to be outside stack: %p < %p\n", ptr_to_info, + info.stack_limit); + exit(5); + } + + if (ptr_to_info > info.heap_base && ptr_to_info < info.heap_limit) { + printf("info appears to be inside the heap: %p in %p:%p\n", + ptr_to_info, info.heap_base, info.heap_limit); + exit(6); + } + + printf("heap: %p -> %p\n", info.heap_base, info.heap_limit); + printf("stack: %p -> %p\n", info.stack_base, info.stack_limit); + + __semi_call(SYS_WRITE0, (uintptr_t) "Passed HeapInfo checks"); __semi_call(SYS_REPORTEXC, exit_code); /* if we get here we failed */ return -1; |