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Task #5720

closed

Aliases for arrays of registers

Added by Mikhail Chupilko about 9 years ago. Updated almost 9 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Andrei Tatarnikov
Category:
nML Translator
Target version:
2.2
Start date:
03/18/2015
Due date:
% Done:

100%

Estimated time:
Detected in build:
2.1.5-beta-150305
Published in build:
150522

Description

It would be very convenient and useful to have aliases for arrays of regs. The example follows.

reg GPR [32, DWORD]
reg X [32, DWORD] alias = GPR // expected
reg W [32, WORD] alias = GPR // expected

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 #1

Updated by Alexander Kamkin about 9 years ago

  • Target version changed from 2.1 to 2.2
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 #2

Updated by Andrei Tatarnikov almost 9 years ago

  • Status changed from New to Open

Started - r3619 (grammar rules + sketch of runtime library code).

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 #3

Updated by Andrei Tatarnikov almost 9 years ago

  • % Done changed from 0 to 30

In progress: r3624.

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 #4

Updated by Andrei Tatarnikov almost 9 years ago

r3625.
r3626
r3627
r3628

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 #5

Updated by Andrei Tatarnikov almost 9 years ago

Sketch implementation is done - r3630.

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 #6

Updated by Andrei Tatarnikov almost 9 years ago

  • % Done changed from 30 to 70
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 #7

Updated by Andrei Tatarnikov almost 9 years ago

needs testing

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 #8

Updated by Andrei Tatarnikov almost 9 years ago

  • Status changed from Open to Resolved

Done. r3633.

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 #9

Updated by Andrei Tatarnikov almost 9 years ago

Examples:

The structure reg Y [N, T] alias = X [MIN..MAX] allows interpreting a part of the X array from MIN to MAX as an array of type T that includes N items.
Precondition: sizeof(Type of array X) must be divisible to sizeof(T).

reg GPR   [32,  WORD]
reg GPRS1 [2,  SHORT] alias = GPR         // Interpret GPR[0] as an array of 2 SHORTs
reg GPRS2 [64, SHORT] alias = GPR[0..31]  // Interpret GPR (entire) as an array of 64 SHORTs
reg GPRS3 [32, SHORT] alias = GPR[16..31] // Interpret the second half of GPR as an array of 32 SHORTs
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 #10

Updated by Andrei Tatarnikov almost 9 years ago

  • Status changed from Resolved to Closed
  • % Done changed from 70 to 100
  • Published in build set to 150522
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