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| author | Andrew Cagney <cagney@redhat.com> | 1997-10-14 09:39:05 +0000 |
|---|---|---|
| committer | Andrew Cagney <cagney@redhat.com> | 1997-10-14 09:39:05 +0000 |
| commit | 7456a10d9b80ae68b7df7a9e801b076acdb58fb2 (patch) | |
| tree | 40ffc9b6c1cfacd59e03781ecae074de1a37c08b /sim/common/sim-alu.h | |
| parent | 055ee2977fb1d20d8db53f48a62fcec279458631 (diff) | |
| download | gdb-7456a10d9b80ae68b7df7a9e801b076acdb58fb2.zip gdb-7456a10d9b80ae68b7df7a9e801b076acdb58fb2.tar.gz gdb-7456a10d9b80ae68b7df7a9e801b076acdb58fb2.tar.bz2 | |
* sim-alu.h (ALU64_HAD_OVERFLOW): Define.
(ALU64_SUB): Define.
* Make-common.in (all): Build SIM_EXTRA_ALL first.
(.gdbinit): Remove dependencies, generate once per build.
Diffstat (limited to 'sim/common/sim-alu.h')
| -rw-r--r-- | sim/common/sim-alu.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/sim/common/sim-alu.h b/sim/common/sim-alu.h index 46306c9..98bbfd2 100644 --- a/sim/common/sim-alu.h +++ b/sim/common/sim-alu.h @@ -132,7 +132,7 @@ do { \ #define ALU64_ADD(VAL) \ do { \ unsigned64 val = (VAL); \ - unsigned64 alu_lo = alu_val + val); \ + unsigned64 alu_lo = alu_val + val; \ signed alu_carry = ((alu_lo & LSBIT64 (31)) != 0); \ alu_carry_val = (alu_carry_val \ + MSEXTRACTED64 (val, 0, 31) \ @@ -186,7 +186,8 @@ do { \ #define ALU64_SUB(VAL) \ do { \ - error("ALU_SUB64"); \ + signed64 subval = -(VAL); /* -MININT? */ \ + ALU64_ADD (subval); \ } while (0) #define ALU_SUB(VAL) XCONCAT3(ALU,WITH_TARGET_WORD_BITSIZE,_SUB)(VAL) @@ -334,11 +335,15 @@ do { \ (!(alu_overflow_val & MSBIT32 (0)) != !(alu_overflow_val & MSBIT32 (16))) #define ALU32_HAD_OVERFLOW \ - ((((unsigned64)(alu_overflow_val & BIT64(0))) >> 32) \ - != (alu_overflow_val & MSBIT64(32))) + ((((unsigned64)(alu_overflow_val & MSBIT64(0))) >> 32) \ + != (unsigned64)(alu_overflow_val & MSBIT64(32))) + +#define ALU64_HAD_OVERFLOW \ + ((alu_val & MSBIT64 (0)) != (alu_overflow_val & MSBIT64 (0))) #define ALU_HAD_OVERFLOW XCONCAT3(ALU,WITH_TARGET_WORD_BITSIZE,_HAD_OVERFLOW) + /* carry found in bit before sign */ #define ALU16_HAD_CARRY \ |