While qtest_get_arch() returns the target architecture name,
such "i386" or "x86_64", qtest_get_base_arch() return the
"base" (or real underlying) architecture, in this example
that is "x86".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 tests/qtest/libqtest.h |  7 +++++++
 tests/qtest/libqtest.c | 28 ++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/tests/qtest/libqtest.h b/tests/qtest/libqtest.h
index 1e1b42241d..54071e74ec 100644
--- a/tests/qtest/libqtest.h
+++ b/tests/qtest/libqtest.h
@@ -654,6 +654,13 @@ bool qtest_big_endian(QTestState *s);
  */
 const char *qtest_get_arch(void);
 
+/**
+ * qtest_get_base_arch:
+ *
+ * Returns: The base architecture for the QEMU executable under test.
+ */
+const char *qtest_get_base_arch(void);
+
 /**
  * qtest_get_arch_bits:
  *
diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
index a643a6309c..51cc92af21 100644
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -925,6 +925,34 @@ const char *qtest_get_arch(void)
     return end + 1;
 }
 
+const char *qtest_get_base_arch(void)
+{
+    static const struct {
+        const char *const arch;
+        const char *const base;
+    } basearch[] = {
+        { "aarch64", "arm" },
+        { "i386", "x86" },
+        { "loongarch64", "loongarch" },
+        { "mipsel", "mips" },
+        { "mips64", "mips" },
+        { "mips64el", "mips" },
+        { "ppc64", "ppc" },
+        { "riscv32", "riscv" },
+        { "riscv64", "riscv" },
+        { "sparc64", "sparc" },
+        { "x86_64", "x86" },
+    };
+    const char *arch = qtest_get_arch();
+
+    for (unsigned i = 0; i < ARRAY_SIZE(basearch); i++) {
+        if (!strcmp(arch, basearch[i].arch)) {
+            return basearch[i].base;
+        }
+    }
+    g_assert_not_reached();
+}
+
 unsigned qtest_get_arch_bits(void)
 {
     static const char *const arch64[] = {
-- 
2.41.0

On 10/10/23 09:49, Philippe Mathieu-Daudé wrote:
> While qtest_get_arch() returns the target architecture name,
> such "i386" or "x86_64", qtest_get_base_arch() return the
> "base" (or real underlying) architecture, in this example
> that is "x86".
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   tests/qtest/libqtest.h |  7 +++++++
>   tests/qtest/libqtest.c | 28 ++++++++++++++++++++++++++++
>   2 files changed, 35 insertions(+)
> 
> diff --git a/tests/qtest/libqtest.h b/tests/qtest/libqtest.h
> index 1e1b42241d..54071e74ec 100644
> --- a/tests/qtest/libqtest.h
> +++ b/tests/qtest/libqtest.h
> @@ -654,6 +654,13 @@ bool qtest_big_endian(QTestState *s);
>    */
>   const char *qtest_get_arch(void);
>   
> +/**
> + * qtest_get_base_arch:
> + *
> + * Returns: The base architecture for the QEMU executable under test.
> + */
> +const char *qtest_get_base_arch(void);
> +
>   /**
>    * qtest_get_arch_bits:
>    *
> diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
> index a643a6309c..51cc92af21 100644
> --- a/tests/qtest/libqtest.c
> +++ b/tests/qtest/libqtest.c
> @@ -925,6 +925,34 @@ const char *qtest_get_arch(void)
>       return end + 1;
>   }
>   
> +const char *qtest_get_base_arch(void)
> +{
> +    static const struct {
> +        const char *const arch;
> +        const char *const base;
> +    } basearch[] = {
> +        { "aarch64", "arm" },
> +        { "i386", "x86" },
> +        { "loongarch64", "loongarch" },
> +        { "mipsel", "mips" },
> +        { "mips64", "mips" },
> +        { "mips64el", "mips" },
> +        { "ppc64", "ppc" },
> +        { "riscv32", "riscv" },
> +        { "riscv64", "riscv" },
> +        { "sparc64", "sparc" },
> +        { "x86_64", "x86" },
> +    };
> +    const char *arch = qtest_get_arch();
> +
> +    for (unsigned i = 0; i < ARRAY_SIZE(basearch); i++) {
> +        if (!strcmp(arch, basearch[i].arch)) {
> +            return basearch[i].base;
> +        }
> +    }
> +    g_assert_not_reached();

Sorry, I forgot to commit this change:

-- >8 --
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -950,7 +950,8 @@ const char *qtest_get_base_arch(void)
              return basearch[i].base;
          }
      }
-    g_assert_not_reached();
+
+    return arch;
  }

---

> +}
> +
>   unsigned qtest_get_arch_bits(void)
>   {
>       static const char *const arch64[] = {