diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2023-08-04 18:19:25 +0000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-10-22 16:32:27 -0700 |
| commit | d90b23af6dedb93384c8964882d9fad4af0f3cab (patch) | |
| tree | de43b3732af04fdad10de0b365243e429fb5b744 /tcg | |
| parent | 1f8e4dc182b7ee8240a4d016162847ff4b581399 (diff) | |
tcg/ppc: Use PLD in tcg_out_movi for constant pool
The prefixed instruction has a pc-relative form to use here.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/ppc/tcg-target.c.inc | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc index 34df9144cc..79e82d2f94 100644 --- a/tcg/ppc/tcg-target.c.inc +++ b/tcg/ppc/tcg-target.c.inc @@ -101,6 +101,10 @@ #define ALL_GENERAL_REGS 0xffffffffu #define ALL_VECTOR_REGS 0xffffffff00000000ull +#ifndef R_PPC64_PCREL34 +#define R_PPC64_PCREL34 132 +#endif + #define have_isel (cpuinfo & CPUINFO_ISEL) #ifndef CONFIG_SOFTMMU @@ -266,6 +270,19 @@ static bool reloc_pc14(tcg_insn_unit *src_rw, const tcg_insn_unit *target) return false; } +static bool reloc_pc34(tcg_insn_unit *src_rw, const tcg_insn_unit *target) +{ + const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); + ptrdiff_t disp = tcg_ptr_byte_diff(target, src_rx); + + if (disp == sextract64(disp, 0, 34)) { + src_rw[0] = (src_rw[0] & ~0x3ffff) | ((disp >> 16) & 0x3ffff); + src_rw[1] = (src_rw[1] & ~0xffff) | (disp & 0xffff); + return true; + } + return false; +} + /* test if a constant matches the constraint */ static bool tcg_target_const_match(int64_t val, TCGType type, int ct, int vece) { @@ -696,6 +713,8 @@ static bool patch_reloc(tcg_insn_unit *code_ptr, int type, return reloc_pc14(code_ptr, target); case R_PPC_REL24: return reloc_pc24(code_ptr, target); + case R_PPC64_PCREL34: + return reloc_pc34(code_ptr, target); case R_PPC_ADDR16: /* * We are (slightly) abusing this relocation type. In particular, @@ -1155,6 +1174,11 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret, tcg_out32(s, LD | TAI(ret, TCG_REG_TB, 0)); return; } + if (have_isa_3_10) { + tcg_out_8ls_d(s, PLD, ret, 0, 0, 1); + new_pool_label(s, arg, R_PPC64_PCREL34, s->code_ptr - 2, 0); + return; + } if (have_isa_3_00) { tcg_out_addpcis(s, TCG_REG_TMP2, 0); new_pool_label(s, arg, R_PPC_REL14, s->code_ptr, 0); |