Quantum
d5d92555ae
Just ecall wrapper for now TODO: Build system changes are lazy and need to be figured out TODO: Looks like kernel.cpp was indented with tabs, fix
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
#include <cstdint>
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#include <opensbi.h>
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namespace drivers {
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namespace opensbi {
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sbiret_t call(
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uintmax_t extension,
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uintmax_t function,
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uintmax_t a0,
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uintmax_t a1,
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uintmax_t a2,
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uintmax_t a3,
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uintmax_t a4,
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uintmax_t a5) {
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register uintmax_t r_a7 asm("a7") = extension;
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register uintmax_t r_a6 asm("a6") = function;
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register uintmax_t r_a0 asm("a0") = a0;
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register uintmax_t r_a1 asm("a1") = a1;
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register uintmax_t r_a2 asm("a2") = a2;
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register uintmax_t r_a3 asm("a3") = a3;
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register uintmax_t r_a4 asm("a4") = a4;
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register uintmax_t r_a5 asm("a5") = a5;
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asm volatile("ecall" : // Instruction
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"=r"(r_a0), "=r"(r_a1) : // Inputs
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"r"(r_a7), "r"(r_a6), // Outputs
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"r"(r_a0), "r"(r_a1), "r"(r_a2),
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"r"(r_a3), "r"(r_a4), "r"(r_a5));
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return {.error = a0, .value = a1};
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}
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sbiret_t call(
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uintmax_t extension,
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uintmax_t function,
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uintmax_t a0,
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uintmax_t a1,
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uintmax_t a2,
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uintmax_t a3,
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uintmax_t a4) {
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return call(extension, function, a0, a1, a2, a3, a4, 0);
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}
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sbiret_t call(
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uintmax_t extension,
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uintmax_t function,
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uintmax_t a0,
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uintmax_t a1,
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uintmax_t a2,
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uintmax_t a3) {
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return call(extension, function, a0, a1, a2, a3, 0, 0);
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}
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sbiret_t call(
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uintmax_t extension,
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uintmax_t function,
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uintmax_t a0,
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uintmax_t a1,
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uintmax_t a2) {
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return call(extension, function, a0, a1, a2, 0, 0, 0);
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}
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sbiret_t call(
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uintmax_t extension,
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uintmax_t function,
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uintmax_t a0,
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uintmax_t a1) {
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return call(extension, function, a0, a1, 0, 0, 0, 0);
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}
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sbiret_t call(
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uintmax_t extension,
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uintmax_t function,
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uintmax_t a0) {
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return call(extension, function, a0, 0, 0, 0, 0, 0);
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}
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} // End namespace opensbi
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} // End namespace drivers
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