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charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::634; envelope-from=alex.bennee@linaro.org; helo=mail-ej1-x634.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , keithp@keithp.com, qemu-arm@nongnu.org, qemu-riscv@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Query the SYS_HEAPINFO semicall and do some basic verification of the information via libc calls. Signed-off-by: Alex Benn=C3=A9e --- v5 - drop asnprintf, just mix printf output - don't use brk() but do sanity check --- .../multiarch/arm-compat-semi/semihosting.c | 44 ++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) diff --git a/tests/tcg/multiarch/arm-compat-semi/semihosting.c b/tests/tcg/= multiarch/arm-compat-semi/semihosting.c index b3fd16cd12..8e9cfb578c 100644 --- a/tests/tcg/multiarch/arm-compat-semi/semihosting.c +++ b/tests/tcg/multiarch/arm-compat-semi/semihosting.c @@ -8,9 +8,13 @@ */ =20 #define SYS_WRITE0 0x04 +#define SYS_HEAPINFO 0x16 #define SYS_REPORTEXC 0x18 =20 #include +#include +#include +#include #include "semicall.h" =20 int main(int argc, char *argv[argc]) @@ -21,8 +25,46 @@ int main(int argc, char *argv[argc]) uintptr_t exit_block[2] =3D {0x20026, 0}; uintptr_t exit_code =3D (uintptr_t) &exit_block; #endif + struct { + void *heap_base; + void *heap_limit; + void *stack_base; + void *stack_limit; + } info; + void *ptr_to_info =3D (void *) &info; =20 - __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 =3D=3D NULL || info.heap_limit =3D=3D NULL) { + printf("null heap: %p -> %p\n", info.heap_base, info.heap_limit); + exit(1); + } else if (info.heap_base !=3D NULL && info.heap_limit !=3D NULL) { + /* Error if heap base is above limit */ + if ((uintptr_t) info.heap_base >=3D (uintptr_t) info.heap_limit) { + printf("heap base %p >=3D heap_limit %p\n", + info.heap_base, info.heap_limit); + exit(2); + } + } + + if (info.stack_base =3D=3D NULL) { + printf("null stack: %p -> %p\n", info.stack_base, info.stack_limit= ); + exit(3); + } else if (info.stack_base !=3D NULL && info.stack_limit !=3D NULL) { + /* Error if stack base is below limit */ + if ((uintptr_t) info.stack_base < (uintptr_t) info.stack_limit) { + printf("stack base %p < stack_limit %p\n", + info.stack_base, info.stack_limit); + exit(4); + } + } + 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; --=20 2.20.1