1.3.10 SPARC V9 Operators and Expressions

The following V9 64-bit operators and expressions in Table 1–4 ease the task of converting from V8/V8plus assembly code to V9 assembly code.

Table 1-4  V9 64-bit Operators and Expressions

Unary Calculation Operators %hh (address) >> 42 Extract bits 42-63 of a 64-bit word %hm ((address) >> 32) & 0x3ff Extract bits 32-41 of a 64-bit word %lm (((address) >> 10) & 0x3fffff) Extract bits 10-31 of a 64-bit word

For example:

sethi %hh (address), %l1
or %l1, %hm (address), %l1

sethi %lm (address), %12
or %12, %lo (address), %12

sllx %l1, 32, %l1
or %l1, %12, %l1

The V9 high 32-bit operators and expressions are identified in Table 1–5.

Table 1-5  V9 32-bit Operators and Expressions

Unary Calculation Operators %hix ((((address) ^ 0xffffffffffffffff >> 10) &0x4fffff) Invert every bit and extract bits 10-31 %lox ((address) & 0x3ff | 0x1c00 Extract bits 0-9 and sign extend that to 13 bits

For example:

%sethi %hix (address), %l1
or %l1, %lox (address), %l1

The V9 low 44-bit operators and expressions are identified in Table 1–6 .

Table 1-6  Low 44-Bit Operators and Expressions

Unary Calculation Operators %h44 ((address) >> 22) Extract bits 22-43 of a 64-bit word %m44 ((address) >> 12) & 0x3ff Extract bits 12-21 of a 64-bit word %l44 (address) & 0xfff Extract bits 0-11 of a 64-bit word

For example:

%sethi %h44 (address), %l1
or %l1, %m44 (address), %l1
sllx %l1, 12, %l1
or %l1, %

l44 (address), %l1