xous-kernel/asm.S

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ArmAsm
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#if __riscv_xlen == 64
# define STORE sd
# define LOAD ld
# define LOG_REGBYTES 3
#else
# define STORE sw
# define LOAD lw
# define LOG_REGBYTES 2
#endif
#define REGBYTES (1 << LOG_REGBYTES)
.global return_from_interrupt
.text
return_from_interrupt:
la sp, _estack
mret // Return to kmain
.global read_satp
.text
read_satp:
csrr a0, satp
ret