Sun Microsystems UltraSPARC-I User Manual page 242

13.6.2 Short Floating-Point Load and Store Instructions
Opcode imm_asi
LDDFA
ASI_FL8_P
STDFA
LDDFA
ASI_FL8_S
STDFA
LDDFA
ASI_FL8_PL
STDFA
LDDFA
ASI_FL8_SL
STDFA
LDDFA
ASI_FL16_P
STDFA
LDDFA
ASI_FL16_S
STDFA
LDDFA
ASI_FL16_PL
STDFA
LDDFA
ASI_FL16_SL
STDFA
Format (3) LDDFA
11 rd
11 rd
31 30 29 25
Format (3) STDFA
11 rd
11 rd
31 30 29 25
Suggested Assembly Language Syntax
ldda
ldda
stda
stda
Description:
Short floating-point load and store instructions are selected by using one of the
short ASIs with the LDDA and STDA instructions.
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ASI Value
D0
8-bit load/store from/to primary address space
16
D1
8-bit load/store from/to secondary address space
16
8-bit load/store from/to primary address space, lit-
D8
16
tle-endian
8-bit load/store from/to secondary address space,
D9
16
little-endian
D2
16-bit load/store from/to primary address space
16
D3
16-bit load/store from/to secondary address space
16
16-bit load/store from/to primary address space, lit-
DA
16
tle-endian
16-bit load/store from/to secondary address space,
DB
16
little-endian
11 0011 rs1
11 0011 rs1
24 19 18
11 0111 rs1
11 0111 rs1
24 19 18
[ reg_addr ] imm_asi , freg
rd
[ reg_plus_imm ] %asi, freg
rd
freg , [ reg_addr ] imm_asi
rd
freg , [ reg_plus_imm ] %asi
rd
13. UltraSPARC Extended Instructions
Operation
imm_asi
i=0
simm_13
i=1
14 13 5
12
imm_asi
i=0
i=1 simm_13
14 13 12 5
Sun Microelectronics
rs2
4 0
rs2
4 0
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