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xen/arm: smccc-1.1: Make return values unsigned long
An unfortunate consequence of having a strong typing for the input
values to the SMC call is that it also affects the type of the
return values, limiting r0 to 32 bits and r{1,2,3} to whatever
was passed as an input.
Let's turn everything into "unsigned long", which satisfies the
requirements of both architectures, and allows for the full
range of return values.
Reported-by: Stefano Stabellini <stefanos@xilinx.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Marc Zyngier authored and 
Julien Grall committed
1 parent
dcc18294ff
commit
35fc608612
1 file changed
+11
-11
+11
-11
@@ -119,35 +119,35 @@ struct arm_smccc_res {
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#define __declare_arg_0(a0, res) \
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struct arm_smccc_res *___res = res; \
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register uin32_t r0 asm("r0") = a0; \
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register unsigned long r0 asm("r0") = (uint32_t)a0;\
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register unsigned long r1 asm("r1"); \
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register unsigned long r2 asm("r2"); \
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register unsigned long r3 asm("r3")
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#define __declare_arg_1(a0, a1, res) \
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struct arm_smccc_res *___res = res; \
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register uint32_t r0 asm("r0") = a0; \
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register typeof(a1) r1 asm("r1") = a1; \
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register unsigned long r0 asm("r0") = (uint32_t)a0;\
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register unsigned long r1 asm("r1") = a1; \
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register unsigned long r2 asm("r2"); \
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register unsigned long r3 asm("r3")
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#define __declare_arg_2(a0, a1, a2, res) \
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struct arm_smccc_res *___res = res; \
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register u32 r0 asm("r0") = a0; \
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register typeof(a1) r1 asm("r1") = a1; \
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register typeof(a2) r2 asm("r2") = a2; \
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register unsigned long r0 asm("r0") = (uint32_t)a0;\
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register unsigned long r1 asm("r1") = a1; \
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register unsigned long r2 asm("r2") = a2; \
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register unsigned long r3 asm("r3")
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#define __declare_arg_3(a0, a1, a2, a3, res) \
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struct arm_smccc_res *___res = res; \
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register u32 r0 asm("r0") = a0; \
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register typeof(a1) r1 asm("r1") = a1; \
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register typeof(a2) r2 asm("r2") = a2; \
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register typeof(a3) r3 asm("r3") = a3
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register unsigned long r0 asm("r0") = (uint32_t)a0;\
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register unsigned long r1 asm("r1") = a1; \
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register unsigned long r2 asm("r2") = a2; \
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register unsigned long r3 asm("r3") = a3
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#define __declare_arg_4(a0, a1, a2, a3, a4, res) \
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__declare_arg_3(a0, a1, a2, a3, res); \
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register typeof(a4) r4 asm("r4") = a4
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register unsigned long r4 asm("r4") = a4
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#define __declare_arg_5(a0, a1, a2, a3, a4, a5, res) \
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__declare_arg_4(a0, a1, a2, a3, a4, res); \
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