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cpu-exec.c: avoid AREG0 use

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Make functions take a parameter for CPUState instead of relying
on global env. Pass CPUState pointer to TCG prologue, which moves
it to AREG0.

Thanks to Peter Maydell and Laurent Desnogues for the ARM prologue
change.

Revert the hacks to avoid AREG0 use on Sparc hosts.

Move cpu_has_work() and cpu_pc_from_tb() from exec.h to cpu.h.

Compile the file without HELPER_CFLAGS.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2011-05-15 16:03:25 +00:00
parent 2b41f10e18
commit cea5f9a28f
12 changed files with 61 additions and 87 deletions
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8
tcg/mips/tcg-target.c
View file

@ -1452,9 +1452,7 @@ static const TCGTargetOpDef mips_op_defs[] = {
};
static int tcg_target_callee_save_regs[] = {
#if 0 /* used for the global env (TCG_AREG0), so no need to save */
TCG_REG_S0,
#endif
TCG_REG_S0, /* used for the global env (TCG_AREG0) */
TCG_REG_S1,
TCG_REG_S2,
TCG_REG_S3,
@ -1486,8 +1484,8 @@ static void tcg_target_qemu_prologue(TCGContext *s)
}
/* Call generated code */
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_A0, 0);
tcg_out_nop(s);
tcg_out_opc_reg(s, OPC_JR, 0, tcg_target_call_iarg_regs[1]), 0);
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
tb_ret_addr = s->code_ptr;
/* TB epilogue */