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| H A D | packet.cc | 12652:bae1a1865204 Tue Mar 06 10:36:00 EST 2018 Andreas Sandberg <andreas.sandberg@arm.com> mem: Add a helper function to get a word of variable length There are many devices that need to handle reads/writes of different word sizes. A common pattern is a switch statement that check for the size of a packet and then calls the corresponding Packet::(get|set)<uintXX_t> methods. Simplify this by implementing Packet::(get|set)UintX helper functions. The getter reads a word of the size specified in the packet and the specified endianness. The word is then zero-extended to 64 bits. Conversely, the setter truncates the word down to the size required in the packet and then byte-swaps it to the desired endianness. Change-Id: I2f0c27fe3903abf3859bea13b07c7f5f0fb0809f Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/9761 Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com> |
| H A D | packet.hh | 12652:bae1a1865204 Tue Mar 06 10:36:00 EST 2018 Andreas Sandberg <andreas.sandberg@arm.com> mem: Add a helper function to get a word of variable length There are many devices that need to handle reads/writes of different word sizes. A common pattern is a switch statement that check for the size of a packet and then calls the corresponding Packet::(get|set)<uintXX_t> methods. Simplify this by implementing Packet::(get|set)UintX helper functions. The getter reads a word of the size specified in the packet and the specified endianness. The word is then zero-extended to 64 bits. Conversely, the setter truncates the word down to the size required in the packet and then byte-swaps it to the desired endianness. Change-Id: I2f0c27fe3903abf3859bea13b07c7f5f0fb0809f Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/9761 Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com> |
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