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[gamecode] Change address mode B to entity.field

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It turned out that address mode B was redundant as C with 0 offset
(immediate) was the same (except for the underlying C code of course,
but adding st->b is very cheap). This allowed B to be used for
entity.field for all transfer operations. Thus instructions 0-3 are now
free as load E became load B, and other than the specifics of format
codes for statement printing, transfers+lea are unified.
This commit is contained in:
Bill Currie 2022-01-20 14:55:29 +09:00
parent 6ae9daf4b7
commit e20aed5c5a
6 changed files with 82 additions and 117 deletions
Download patch file Download diff file Expand all files Collapse all files

26
libs/gamecode/test/test-stack.c
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@ -81,11 +81,11 @@ static dstatement_t stack_AB_statements[] = {
{OP(0, 0, 0, OP_PUSH_A_2), 20, 0, 0},
{OP(0, 0, 0, OP_PUSH_A_2), 22, 0, 0},
{OP(0, 0, 0, OP_POP_B_2), 0, 0, 0},
{OP(0, 0, 0, OP_POP_B_2), 1, 0, 0},
{OP(0, 0, 0, OP_POP_B_1), 2, 0, 0},
{OP(0, 0, 0, OP_POP_B_3), 3, 0, 0},
{OP(0, 0, 0, OP_POP_B_4), 4, 0, 0},
{OP(0, 0, 0, OP_POP_B_2), 7, 5, 0},
{OP(0, 0, 0, OP_POP_B_2), 7, 6, 0},
{OP(0, 0, 0, OP_POP_B_1), 7, 7, 0},
{OP(0, 0, 0, OP_POP_B_3), 7, 8, 0},
{OP(0, 0, 0, OP_POP_B_4), 7, 9, 0},
};
static dstatement_t stack_AC_statements[] = {
@ -117,11 +117,11 @@ static dstatement_t stack_AD_statements[] = {
};
static dstatement_t stack_BA_statements[] = {
{OP(0, 0, 0, OP_PUSH_B_2), 0, 0, 0},
{OP(0, 0, 0, OP_PUSH_B_2), 1, 0, 0},
{OP(0, 0, 0, OP_PUSH_B_1), 2, 0, 0},
{OP(0, 0, 0, OP_PUSH_B_3), 3, 0, 0},
{OP(0, 0, 0, OP_PUSH_B_4), 4, 0, 0},
{OP(0, 0, 0, OP_PUSH_B_2), 7, 5, 0},
{OP(0, 0, 0, OP_PUSH_B_2), 7, 6, 0},
{OP(0, 0, 0, OP_PUSH_B_1), 7, 7, 0},
{OP(0, 0, 0, OP_PUSH_B_3), 7, 8, 0},
{OP(0, 0, 0, OP_PUSH_B_4), 7, 9, 0},
{OP(0, 0, 0, OP_POP_A_4), 12, 0, 0},
{OP(0, 0, 0, OP_POP_A_3), 16, 0, 0},
@ -176,6 +176,9 @@ test_t tests[] = {
.statements = stack_AB_statements,
.init_globals = test_globals_init1,
.expect_globals = test_globals_expect1,
// FIXME negative field offsets are not official but work because all
// offset calculations are done in 32-bit and thus wrap anyway
.edict_area = 28,
},
{
.desc = "stack push A pop C",
@ -203,6 +206,9 @@ test_t tests[] = {
.statements = stack_BA_statements,
.init_globals = test_globals_init2,
.expect_globals = test_globals_expect2,
// FIXME negative field offsets are not official but work because all
// offset calculations are done in 32-bit and thus wrap anyway
.edict_area = 28,
},
{
.desc = "stack push C pop A",