gdb: move all tests to userland

userland/arch/aarch64/gdb_tests/README.adoc

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+https://github.com/cirosantilli/linux-kernel-module-cheat#gdb-tests

userland/arch/aarch64/gdb_tests/floating_registers.S

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+/* https://github.com/cirosantilli/arm-assembly-cheat/blob/c19e187e98e99f2f4a042783ca238aa4eb2292ab/v8/floating_point.S */
+
+#include <lkmc.h>
+
+LKMC_PROLOGUE
+    /* 1.5 + 2.5 == 4.0 */
+    fmov d0, 1.5
+    /* test-gdb-d0 */
+    fmov d1, 2.5
+    /* test-gdb-d1 */
+    fadd d2, d0, d1
+    /* test-gdb-d2 */
+    fmov d3, 4.0
+    fcmp d2, d3
+    LKMC_ASSERT(beq)
+
+    /* Now in 32-bit. */
+    fmov s0, 1.5
+    /* test-gdb-s0 */
+    fmov s1, 2.5
+    /* test-gdb-s1 */
+    fadd s2, s0, s1
+    /* test-gdb-s2 */
+    fadd s2, s0, s1
+    fmov s3, 4.0
+    fcmp s2, s3
+    LKMC_ASSERT(beq)
+
+    /* Higher registers. */
+    fmov d28, 1.5
+    /* test-gdb-d28 */
+    fmov d29, 2.5
+    /* test-gdb-d29 */
+    fadd d30, d28, d29
+    /* test-gdb-d30 */
+    fmov d31, 4.0
+    /* test-gdb-d31 */
+    fcmp d30, d31
+    LKMC_ASSERT(beq)
+
+LKMC_EPILOGUE

userland/arch/aarch64/gdb_tests/floating_registers.py

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+def test(self):
+    self.sendline('tbreak main')
+    self.sendline('continue')
+
+    # Double.
+    self.continue_to('d0')
+    assert self.get_float('$d0') == 1.5
+    self.continue_to('d1')
+    assert self.get_float('$d1') == 2.5
+    self.continue_to('d2')
+    assert self.get_float('$d2') == 4.0
+
+    # Single.
+    self.continue_to('s0')
+    assert self.get_float('$s0') == 1.5
+    self.continue_to('s1')
+    assert self.get_float('$s1') == 2.5
+    self.continue_to('s2')
+    assert self.get_float('$s2') == 4.0
+
+    # High registers..
+    self.continue_to('d28')
+    assert self.get_float('$d28') == 1.5
+    self.continue_to('d29')
+    assert self.get_float('$d29') == 2.5
+    self.continue_to('d30')
+    assert self.get_float('$d30') == 4.0
+    self.continue_to('d31')
+    assert self.get_float('$d31') == 4.0
+

userland/arch/aarch64/gdb_tests/integer_registers.S

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+#include <lkmc.h>
+
+LKMC_PROLOGUE
+    /* 1 + 2 == 3 */
+    mov x0, 1
+    /* test-gdb-op1 */
+    add x1, x0, 2
+    /* test-gdb-result */
+    LKMC_ASSERT_EQ(x1, =3)
+LKMC_EPILOGUE

userland/arch/aarch64/gdb_tests/integer_registers.py

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+def test(self):
+    self.sendline('tbreak main')
+    self.sendline('continue')
+    self.continue_to('op1')
+    assert self.get_int('$x0') == 1
+    self.continue_to('result')
+    assert self.get_int('$x1') == 3

userland/arch/aarch64/gdb_tests/set_registers.S

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+/* Test that we can set registers from GDB. */
+
+#include <lkmc.h>
+
+LKMC_PROLOGUE
+    mov x0, 1
+    /* test-gdb-x0 */
+    mov x1, 2
+    /* test-gdb-x1 */
+
+    mov x29, 1
+    /* test-gdb-x29 */
+    mov x30, 2
+    /* test-gdb-x30 */
+
+    fmov d0, 1.5
+    /* test-gdb-d0 */
+    fmov d1, 2.5
+    /* test-gdb-d1 */
+
+    fmov d30, 1.5
+    /* test-gdb-d30 */
+    fmov d31, 2.5
+    /* test-gdb-d31 */
+
+    /* Exit required since we messed up with x30 which is the lr. */
+    mov x0, 0
+    bl exit
+
+LKMC_EPILOGUE

userland/arch/aarch64/gdb_tests/set_registers.py

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+def test(self):
+    self.sendline('tbreak main')
+    self.sendline('continue')
+
+    self.continue_to('x0')
+    self.sendline('set $x0 = 3')
+    self.continue_to('x1')
+    assert self.get_int('$x0') == 3
+    assert self.get_int('$x1') == 2
+    self.sendline('set $x30 = 3')
+    self.continue_to('x29')
+    assert self.get_int('$x29') == 1
+    assert self.get_int('$x30') == 3
+    self.continue_to('x30')
+    assert self.get_int('$x30') == 2
+
+    self.continue_to('d0')
+    self.sendline('set $d0 = 3.5')
+    self.continue_to('d1')
+    assert self.get_float('$d0') == 3.5
+    assert self.get_float('$d1') == 2.5
+    self.sendline('set $d31 = 3.5')
+    self.continue_to('d30')
+    assert self.get_float('$d30') == 1.5
+    assert self.get_float('$d31') == 3.5
+    self.continue_to('d31')
+    assert self.get_float('$d31') == 2.5

userland/arch/arm/gdb_tests/README.adoc

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+https://github.com/cirosantilli/linux-kernel-module-cheat#gdb-tests

userland/arch/arm/gdb_tests/integer_registers.S

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+#include <lkmc.h>
+
+LKMC_PROLOGUE
+    /* 1 + 2 == 3 */
+    mov r0, 1
+    /* test-gdb-op1 */
+    add r1, r0, 2
+    /* test-gdb-result */
+    LKMC_ASSERT_EQ(r1, =3)
+LKMC_EPILOGUE

userland/arch/arm/gdb_tests/integer_registers.py

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+def test(self):
+    self.sendline('tbreak main')
+    self.sendline('continue')
+    self.continue_to('op1')
+    assert self.get_int('$r0') == 1
+    self.continue_to('result')
+    assert self.get_int('$r1') == 3

userland/arch/arm/gdb_tests/set_registers.S

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+#include <lkmc.h>
+
+LKMC_PROLOGUE
+    mov r0, 1
+    /* test-gdb-r0 */
+    mov r1, 2
+    /* test-gdb-r1 */
+LKMC_EPILOGUE

userland/arch/arm/gdb_tests/set_registers.py

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+def test(self):
+    self.sendline('tbreak main')
+    self.sendline('continue')
+    self.continue_to('r0')
+    self.sendline('set $r0 = 3')
+    self.continue_to('r1')
+    assert self.get_int('$r0') == 3
+    assert self.get_int('$r1') == 2