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Add LITTLE_ENDIAN and BIG_ENDIAN features

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This commit is contained in:
Karol Stasiak 2019-07-15 14:15:38 +02:00
parent e0cd000b99
commit 1d024eae76
2 changed files with 13 additions and 0 deletions
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4
docs/lang/preprocessor.md
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@ -57,6 +57,10 @@ The following features are defined based on the chosen CPU and compilation optio
* `INIT_RW_MEMORY` – 1 if the option `ram_init_segment` is defined, 0 otherwise.
See [the ROM vs RAM guide](../api/rom-vs-ram.md) for more information.
* `BIG_ENDIAN` – 1 if the platform is big-endian, 0 otherwise (currently all supported platforms are little-endian)
* `LITTLE_ENDIAN` – 1 if the platform is little-endian, 0 otherwise (currently all supported platforms are little-endian)
* `OPTIMIZE_FOR_SIZE`, `OPTIMIZE_FOR_SPEED`, `OPTIMIZE_INLINE`, `OPTIMIZE_IPO`
– 1 if given optimization setting is enabled, 0 otherwise

9
src/main/scala/millfork/CompilationOptions.scala
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@ -214,6 +214,8 @@ case class CompilationOptions(platform: Platform,
"CPUFEATURE_6502_ILLEGALS" -> toLong(platform.cpuFamily == CpuFamily.M6502 && flag(CompilationFlag.EmitIllegals)),
"CPUFEATURE_Z80_ILLEGALS" -> toLong(flag(CompilationFlag.EmitZ80Opcodes) && flag(CompilationFlag.EmitIllegals)),
"CPUFEATURE_8085_ILLEGALS" -> toLong(flag(CompilationFlag.EmitIntel8080Opcodes) && flag(CompilationFlag.EmitIllegals)),
"BIG_ENDIAN" -> toLong(Cpu.isBigEndian(platform.cpu)),
"LITTLE_ENDIAN" -> toLong(!Cpu.isBigEndian(platform.cpu)),
"INIT_RW_MEMORY" -> toLong(platform.ramInitialValuesBank.isDefined),
"SYNTAX_INTEL" -> toLong(platform.cpuFamily == CpuFamily.I80 && flag(CompilationFlag.UseIntelSyntaxForInput)),
"SYNTAX_ZILOG" -> toLong(platform.cpuFamily == CpuFamily.I80 && !flag(CompilationFlag.UseIntelSyntaxForInput)),
@ -269,6 +271,11 @@ object CpuFamily extends Enumeration {
case Cpu.Motorola6809 => M6809
}
}
def isBigEndian(family: CpuFamily.Value): Boolean = family match {
case M6502 | I80 | I86 | ARM => false
case M6800 | M6809 | M68K => true
}
}
object Cpu extends Enumeration {
@ -475,6 +482,8 @@ object Cpu extends Enumeration {
case CpuFamily.M6809 => 2
case _ => ???
}
def isBigEndian(cpu: Cpu.Value): Boolean = CpuFamily.isBigEndian(CpuFamily.forType(cpu))
}
object CompilationFlag extends Enumeration {