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[gamecode] Add an enum for the different branch types

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While it doesn't cover the addressing modes, it does match the bit
pattern used in the Ruamoko instruction set. It will make selecting
branch instructions easier (especially for Ruamoko).
This commit is contained in:
Bill Currie 2022-01-09 13:56:09 +09:00
parent 86e81ba250
commit 09002c17e6
1 changed files with 14 additions and 0 deletions
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14
include/QF/progs/pr_comp.h
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@ -430,6 +430,20 @@ typedef enum {
#include "QF/progs/pr_opcode.hinc"
} pr_opcode_e;
// Used for both branch and comparison, with jump and call being ignored for
// comparison. For branches, the test is against zero, while for comparison,
// it's a cmp b (where cmp takes the place of "branch" in the enum names).
typedef enum {
pr_branch_eq,
pr_branch_lt,
pr_branch_gt,
pr_branch_jump,
pr_branch_ne,
pr_branch_ge,
pr_branch_le,
pr_branch_call,
} pr_branch_e;
#define OP_A_SHIFT (9)
#define OP_B_SHIFT (11)
#define OP_C_SHIFT (13)