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| author | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2022-06-24 18:55:21 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2022-06-24 19:22:27 +0200 |
| commit | a34adc8e005447e7fa44ca3b71db35ceb7facb4c (patch) | |
| tree | d1c7308d30254d39694877fceaccb8a168a2660a /riscV/Asm.v | |
| parent | 44a668fbd81a587a17b680bebecf016519915a69 (diff) | |
| download | compcert-a34adc8e005447e7fa44ca3b71db35ceb7facb4c.tar.gz compcert-a34adc8e005447e7fa44ca3b71db35ceb7facb4c.zip | |
Expand "j_s symb" to "jump symb, x31" assembly pseudo-instruction
As suggested by Léo Gourdin in #437.
The previous expansion as a plain "j" instruction fails when the jump
offset is too large to be represented (issue #436).
Fixes: #436
Closes: #437
Diffstat (limited to 'riscV/Asm.v')
| -rw-r--r-- | riscV/Asm.v | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/riscV/Asm.v b/riscV/Asm.v index a47573a2..cbe3476a 100644 --- a/riscV/Asm.v +++ b/riscV/Asm.v @@ -751,7 +751,7 @@ Definition exec_instr (f: function) (i: instruction) (rs: regset) (m: mem) : out | Pj_l l => goto_label f l rs m | Pj_s s sg => - Next (rs#PC <- (Genv.symbol_address ge s Ptrofs.zero)) m + Next (rs#PC <- (Genv.symbol_address ge s Ptrofs.zero) #X31 <- Vundef) m | Pj_r r sg => Next (rs#PC <- (rs#r)) m | Pjal_s s sg => |