mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-24 23:32:06 +00:00
137 lines
2.6 KiB
ArmAsm
137 lines
2.6 KiB
ArmAsm
/* convert psi to si inplace
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Note that `fp' below isn't a segment register.
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It's r6, the frame pointer. */
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#if __CODE__==32
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#define RET prts
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#else
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#define RET rts
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#endif
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#define EXTPSISI_SN(r_msw,r_lsw,sp) ; \
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.global __extpsisi##r_msw ; \
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__extpsisi##r_msw: ; \
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mov r_msw,r_lsw ; \
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stc sp,r_msw ; \
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RET
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EXTPSISI_SN(r2,r3,dp)
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EXTPSISI_SN(r4,r5,ep)
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#define ADDPSI_AR_RN(sr,an,r_msw,r_lsw) \
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.global __addpsi##an##r_msw ; \
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__addpsi##an##r_msw: ; \
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stc sr,@-sp ; \
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add an,r_lsw ; \
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addx @sp+,r_msw ; \
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RET
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ADDPSI_AR_RN(dp,r2,r0,r1)
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ADDPSI_AR_RN(dp,r2,r3,r4)
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ADDPSI_AR_RN(ep,r4,r0,r1)
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ADDPSI_AR_RN(ep,r4,r1,r2)
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ADDPSI_AR_RN(ep,r4,r3,r4)
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ADDPSI_AR_RN(ep,r4,r5,fp)
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ADDPSI_AR_RN(tp,fp,r0,r1)
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#define ADDPSI_RN_AR(r_msw,r_lsw,sr,an,t_msw,t_lsw) \
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.global __addpsi##r_msw##an ; \
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__addpsi##r_msw##an: ; \
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mov.w t_msw,@-sp ; \
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mov.w t_lsw,@-sp ; \
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stc sr,t_msw ; \
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mov an,t_lsw ; \
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add r_lsw,t_lsw ; \
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addx r_msw,t_msw ; \
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ldc t_msw,sr ; \
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mov.w t_lsw,an ; \
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mov.w @sp+,t_lsw ; \
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mov.w @sp+,t_msw ; \
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RET
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ADDPSI_RN_AR(r0,r1,dp,r2,r4,r5)
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ADDPSI_RN_AR(r0,r1,ep,r4,r2,r3)
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#define EXTPSIHI_RN_RN(rm,r_msw,r_lsw) ; \
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.global __extpsihi##rm##r_msw ; \
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__extpsihi##rm##r_msw: ; \
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mov rm,r_lsw ; \
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clr.w r_msw ; \
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RET
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EXTPSIHI_RN_RN(r3,r0,r1)
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EXTPSIHI_RN_RN(r4,r0,r1)
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EXTPSIHI_RN_RN(r5,r0,r1)
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EXTPSIHI_RN_RN(r2,r0,r1)
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/* ifdefed out, because gcc doesn't like the # character in the above
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macro. The macro expands into an assembly languange comment anyways,
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so it serves no useful purpose. */
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#if 0
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#define EXTPSIHI_RN_SN(rm,r_msw,r_lsw) ; \
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.global __extpsihi##rm##r_lsw ; \
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__extpsihi##rm##r_lsw: ; \
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mov rm,r_lsw ; \
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ldc \#0,r_msw ; \
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RET
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EXTPSIHI_RN_SN(r0,dp,r2)
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EXTPSIHI_RN_SN(r0,ep,r4)
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EXTPSIHI_RN_SN(r1,dp,r2)
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EXTPSIHI_RN_SN(r1,ep,r4)
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EXTPSIHI_RN_SN(r3,dp,r2)
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EXTPSIHI_RN_SN(r3,ep,r4)
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EXTPSIHI_RN_SN(r5,dp,r2)
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EXTPSIHI_RN_SN(r5,ep,r4)
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EXTPSIHI_RN_SN(r2,ep,r4)
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#endif
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#define EXTPSISI_RN(r_msw,r_lsw) ; \
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.global __extpsisi##r_msw ; \
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__extpsisi##r_msw: ; \
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RET
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EXTPSISI_RN(r0,r1)
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#define ADDPSI_SA_SB(sa,ra,sb,rb) ; \
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.global __addpsi##ra##rb ; \
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__addpsi##ra##rb: ; \
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mov.w r0,@-sp ; \
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mov.w r1,@-sp ; \
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stc sa,r0 ; \
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stc sb,r1 ; \
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add.w ra,rb ; \
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addx r0,r1 ; \
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ldc r1,sb ; \
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mov.w @sp+,r1 ; \
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mov.w @sp+,r0 ; \
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RET
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ADDPSI_SA_SB(dp,r2,ep,r4)
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ADDPSI_SA_SB(ep,r4,dp,r2)
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ADDPSI_SA_SB(tp,fp,dp,r2)
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ADDPSI_SA_SB(tp,fp,ep,r4)
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ADDPSI_SA_SB(dp,r2,dp,r2)
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.global __addpsir0r0
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__addpsir0r0:
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add.w r1,r1
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addx r0,r0
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RET
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