From 4e93eeaa3b63b6ae50954a29662cc3ea6be48b23 Mon Sep 17 00:00:00 2001 From: Michael Forney Date: Sat, 12 Feb 2022 02:27:50 -0800 Subject: add rv64 backend It is mostly complete, but still has a few ABI bugs when passing floats in structs, or when structs are passed partly in register, and partly on stack. --- rv64/all.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 rv64/all.h (limited to 'rv64/all.h') diff --git a/rv64/all.h b/rv64/all.h new file mode 100644 index 0000000..eb2daa9 --- /dev/null +++ b/rv64/all.h @@ -0,0 +1,49 @@ +#include "../all.h" + +typedef struct Rv64Op Rv64Op; + +enum Rv64Reg { + /* caller-save */ + T0 = RXX + 1, T1, T2, T3, T4, T5, + A0, A1, A2, A3, A4, A5, A6, A7, + + /* callee-save */ + S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, + + /* globally live */ + FP, SP, GP, TP, RA, T6, + + /* FP caller-save */ + FT0, FT1, FT2, FT3, FT4, FT5, FT6, FT7, FT8, FT9, FT10, FT11, + FA0, FA1, FA2, FA3, FA4, FA5, FA6, FA7, + + /* FP callee-save */ + FS0, FS1, FS2, FS3, FS4, FS5, FS6, FS7, FS8, FS9, FS10, FS11, + + NFPR = FS11 - FT0 + 1, + NGPR = T6 - T0 + 1, + NGPS = A7 - T0 + 1, + NFPS = FA7 - FT0 + 1, + NCLR = (S11 - S1 + 1) + (FS11 - FS0 + 1), +}; +MAKESURE(reg_not_tmp, FS11 < (int)Tmp0); + +struct Rv64Op { + char imm; +}; + +/* targ.c */ +extern int rv64_rsave[]; +extern int rv64_rclob[]; +extern Rv64Op rv64_op[]; + +/* abi.c */ +bits rv64_retregs(Ref, int[2]); +bits rv64_argregs(Ref, int[2]); +void rv64_abi(Fn *); + +/* isel.c */ +void rv64_isel(Fn *); + +/* emit.c */ +void rv64_emitfn(Fn *, FILE *); -- cgit 1.4.1