URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
Compare Revisions
- This comparison shows the changes necessary to convert path
/openrisc
- from Rev 618 to Rev 619
- ↔ Reverse comparison
Rev 618 → Rev 619
/trunk/orpsocv2/rtl/verilog/or1200/or1200_alu.v
127,10 → 127,14
`endif |
`ifdef OR1200_IMPL_ALU_COMP3 |
assign a_eq_b = !(|result_sum); |
// signed compare when comp_op[3] is set |
assign a_lt_b = comp_op[3] ? ((a[width-1] & !b[width-1]) | |
(!a[width-1] & !b[width-1] & result_sum[width-1])| |
(a[width-1] & b[width-1] & result_sum[width-1])): |
result_sum[width-1]; |
// a < b if (a - b) subtraction wrapped and a[width-1] wasn't set |
(result_sum[width-1] & !a[width-1]) | |
// or if (a - b) wrapped and both a[width-1] and b[width-1] were set |
(result_sum[width-1] & a[width-1] & b[width-1] ); |
`endif |
|
`ifdef OR1200_IMPL_SUB |
/trunk/orpsocv2/sw/tests/or1200/sim/or1200-sf.S
64,8 → 64,10
|
/* =================================================== [ start ] === */ |
|
#define SHOULD_BE_SET l.bnf _fail |
#define SHOULDNT_BE_SET l.bf _fail |
#define SHOULD_BE_SET l.bnf _fail ; \ |
l.nop 0 |
#define SHOULDNT_BE_SET l.bf _fail ; \ |
l.nop 0 |
|
#define MOVE_TO_R4R5_AND_REPORT(a,b) \ |
l.movhi r3,hi(a) ; \ |
206,8 → 208,20
|
SHOULD_BE_GREATER_THAN_UNSIGNED(UINT_MAX,UINT_MAX_MIN1) |
|
SHOULD_BE_GREATER_THAN_UNSIGNED(UINT_MAX,0) |
|
SHOULD_BE_GREATER_THAN_UNSIGNED(0x80000001, 0x80000000) |
|
SHOULD_BE_LESS_THAN_UNSIGNED(0x80000000, 0x80000001) |
|
SHOULD_BE_GREATER_THAN_UNSIGNED(0x80000000,0x7fffffff) |
|
SHOULD_BE_LESS_THAN_UNSIGNED(0x7fffffff, 0x80000000) |
|
SHOULD_BE_GREATER_THAN_UNSIGNED(0x7fffffff, 0x7ffffffe) |
|
SHOULD_BE_LESS_THAN_UNSIGNED(0x7ffffffe, 0x7fffffff) |
|
_finish: |
l.movhi r3, hi(0x8000000d) |
l.ori r3, r3, lo(0x8000000d) |