start: Simplify mips and mips64 startup code.
Switches from using r1 as a temporary to r2. That way, we don't have to set the
`noat` assembler option. (r1 is the scratch register used by the assembler's
pseudoinstructions; the assembler warns when code uses that register explicitly
without `noat` set.)
1 files changed, 2 insertions(+), 10 deletions(-)
lib
std
lib/std/start.zig+2-10
| ... | ... | @@ -332,22 +332,14 @@ fn _start() callconv(.Naked) noreturn { |
| 332 | 332 | \\ move $fp, $0 |
| 333 | 333 | \\ move $ra, $0 |
| 334 | 334 | \\ move $a0, $sp |
| 335 | | \\ .set push |
| 336 | | \\ .set noat |
| 337 | | \\ addiu $1, $zero, -16 |
| 338 | | \\ and $sp, $sp, $1 |
| 339 | | \\ .set pop |
| 335 | \\ and $sp, -16 |
| 340 | 336 | \\ j %[posixCallMainAndExit] |
| 341 | 337 | , |
| 342 | 338 | .mips64, .mips64el => |
| 343 | 339 | \\ move $fp, $0 |
| 344 | 340 | \\ move $ra, $0 |
| 345 | 341 | \\ move $a0, $sp |
| 346 | | \\ .set push |
| 347 | | \\ .set noat |
| 348 | | \\ daddiu $1, $zero, -16 |
| 349 | | \\ and $sp, $sp, $1 |
| 350 | | \\ .set pop |
| 342 | \\ and $sp, -16 |
| 351 | 343 | \\ j %[posixCallMainAndExit] |
| 352 | 344 | , |
| 353 | 345 | .powerpc, .powerpcle => |
Alex Rønne Petersen <alex@alexrp.com> 2024-07-24 18:35:20+02:00
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