wash
edfb3e24a3
bshell: the front-end binary bshell.runtime: contains the parser, compiler, and classes needed to run bshell scripts bshell.core: contains the builtin commandlets and aliases
27 lines
594 B
C
27 lines
594 B
C
#include <bshell/runtime/opcode.h>
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#include <fx/int.h>
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#define BSHELL_OPCODE_MAX 0xFF
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#define ARG_MAX 0xFFFFFF
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bshell_instruction bshell_instruction_encode(
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enum bshell_opcode opcode,
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uint32_t arg)
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{
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if (opcode > BSHELL_OPCODE_MAX) {
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return BSHELL_INSTRUCTION_INVALID;
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}
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return fx_u32_htob((opcode & BSHELL_OPCODE_MAX) | (arg & ARG_MAX) << 8);
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}
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void bshell_instruction_decode(
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bshell_instruction instr,
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enum bshell_opcode *out_opcode,
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uint32_t *out_arg)
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{
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instr = fx_u32_btoh(instr);
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*out_opcode = (instr & BSHELL_OPCODE_MAX);
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*out_arg = ((instr >> 8) & ARG_MAX);
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}
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