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273 lines
9.6 KiB
273 lines
9.6 KiB
//
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// Miscellaneous assembly-language routines and data for
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// PowerPC RTL
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//
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#include "ksppc.h"
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//
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// Copyright 1993 IBM Corporation
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//
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// By Rick Simpson, 17 August 1993
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//
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//-----------------------------------------------------------------------------
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//
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// These routines save and restore only the GPRs and FPRs.
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//
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// Saving and restoring of other non-volatile registers (LR, certain
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// fields of CR) is the responsibility of in-line prologue and epilogue
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// code.
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//
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//-----------------------------------------------------------------------------
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//
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// _savegpr_<n>
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// Inputs:
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// r12 = pointer to END of GPR save area
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// LR = return address to invoking prologue
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// Saves GPR<n> through GPR31 in area preceeding where r12 points
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//
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// _savefpr_<n>
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// Inputs:
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// r1 = pointer to stack frame header
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// LR = return address to invoking prologue
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// Saves FPR<m> through FPR31 in area preceeding stack frame header
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//
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//-----------------------------------------------------------------------------
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//
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// _restgpr_<n>
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// Inputs:
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// r12 = pointer to END of GPR save area
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// LR = return address to invoking prologue
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// Restores GPR<n> through GPR31 from area preceeding where r12 points
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//
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// _restfpr_<m>
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// Inputs:
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// r1 = pointer to stack frame header
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// LR = return address to invoking prologue
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// Restores FPR<m> through FPR31 from area preceeding stack frame header
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//
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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//
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// _savegpr_<n> -- Save GPRs when FPRs are also saved
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//
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// On entry:
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// r12 = address of END of GPR save area
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// LR = return address to prologue
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//
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// Saves GPR<n> through GPR31 in area preceeding where r12 points
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//
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//-----------------------------------------------------------------------------
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FN_TABLE(_savegpr_13,0,1)
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DUMMY_ENTRY(_savegpr_13)
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.set _savegpr_13.body,.._savegpr_13-1
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stw r13, -4*(32-13)(r12)
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DUMMY_ENTRY(_savegpr_14)
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stw r14, -4*(32-14)(r12)
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DUMMY_ENTRY(_savegpr_15)
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stw r15, -4*(32-15)(r12)
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DUMMY_ENTRY(_savegpr_16)
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stw r16, -4*(32-16)(r12)
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DUMMY_ENTRY(_savegpr_17)
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stw r17, -4*(32-17)(r12)
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DUMMY_ENTRY(_savegpr_18)
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stw r18, -4*(32-18)(r12)
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DUMMY_ENTRY(_savegpr_19)
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stw r19, -4*(32-19)(r12)
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DUMMY_ENTRY(_savegpr_20)
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stw r20, -4*(32-20)(r12)
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DUMMY_ENTRY(_savegpr_21)
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stw r21, -4*(32-21)(r12)
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DUMMY_ENTRY(_savegpr_22)
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stw r22, -4*(32-22)(r12)
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DUMMY_ENTRY(_savegpr_23)
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stw r23, -4*(32-23)(r12)
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DUMMY_ENTRY(_savegpr_24)
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stw r24, -4*(32-24)(r12)
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DUMMY_ENTRY(_savegpr_25)
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stw r25, -4*(32-25)(r12)
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DUMMY_ENTRY(_savegpr_26)
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stw r26, -4*(32-26)(r12)
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DUMMY_ENTRY(_savegpr_27)
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stw r27, -4*(32-27)(r12)
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DUMMY_ENTRY(_savegpr_28)
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stw r28, -4*(32-28)(r12)
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DUMMY_ENTRY(_savegpr_29)
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stw r29, -4*(32-29)(r12)
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DUMMY_ENTRY(_savegpr_30)
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stw r30, -4*(32-30)(r12)
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DUMMY_ENTRY(_savegpr_31)
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stw r31, -4*(32-31)(r12)
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SPECIAL_EXIT(_savegpr_13)
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//-----------------------------------------------------------------------------
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//
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// _savefpr_<n> -- Saves FPRs
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//
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// On entry:
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// r1 = pointer to stack frame header
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// LR = return address to prologue
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//
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// Saves FPR<n> through FPR31 in area preceeding stack frame header
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//
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//-----------------------------------------------------------------------------
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FN_TABLE(_savefpr_14,0,1)
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DUMMY_ENTRY(_savefpr_14)
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.set _savefpr_14.body,.._savefpr_14-1
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stfd f14, -8*(32-14)(r1)
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DUMMY_ENTRY(_savefpr_15)
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stfd f15, -8*(32-15)(r1)
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DUMMY_ENTRY(_savefpr_16)
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stfd f16, -8*(32-16)(r1)
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DUMMY_ENTRY(_savefpr_17)
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stfd f17, -8*(32-17)(r1)
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DUMMY_ENTRY(_savefpr_18)
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stfd f18, -8*(32-18)(r1)
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DUMMY_ENTRY(_savefpr_19)
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stfd f19, -8*(32-19)(r1)
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DUMMY_ENTRY(_savefpr_20)
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stfd f20, -8*(32-20)(r1)
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DUMMY_ENTRY(_savefpr_21)
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stfd f21, -8*(32-21)(r1)
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DUMMY_ENTRY(_savefpr_22)
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stfd f22, -8*(32-22)(r1)
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DUMMY_ENTRY(_savefpr_23)
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stfd f23, -8*(32-23)(r1)
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DUMMY_ENTRY(_savefpr_24)
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stfd f24, -8*(32-24)(r1)
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DUMMY_ENTRY(_savefpr_25)
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stfd f25, -8*(32-25)(r1)
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DUMMY_ENTRY(_savefpr_26)
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stfd f26, -8*(32-26)(r1)
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DUMMY_ENTRY(_savefpr_27)
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stfd f27, -8*(32-27)(r1)
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DUMMY_ENTRY(_savefpr_28)
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stfd f28, -8*(32-28)(r1)
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DUMMY_ENTRY(_savefpr_29)
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stfd f29, -8*(32-29)(r1)
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DUMMY_ENTRY(_savefpr_30)
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stfd f30, -8*(32-30)(r1)
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DUMMY_ENTRY(_savefpr_31)
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stfd f31, -8*(32-31)(r1)
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SPECIAL_EXIT(_savefpr_14)
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//-----------------------------------------------------------------------------
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//
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// _restgpr_<n> -- Restore GPRs when FPRs are also restored
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//
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// On entry:
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// r12 = address of END of GPR save area
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// LR = return address
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//
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// Restores GPR<n> through GPR31 from area preceeding where r12 points
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//
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//-----------------------------------------------------------------------------
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FN_TABLE(_restgpr_13,0,2)
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DUMMY_ENTRY(_restgpr_13)
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.set _restgpr_13.body,.._restgpr_13-2
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lwz r13, -4*(32-13)(r12)
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DUMMY_ENTRY(_restgpr_14)
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lwz r14, -4*(32-14)(r12)
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DUMMY_ENTRY(_restgpr_15)
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lwz r15, -4*(32-15)(r12)
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DUMMY_ENTRY(_restgpr_16)
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lwz r16, -4*(32-16)(r12)
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DUMMY_ENTRY(_restgpr_17)
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lwz r17, -4*(32-17)(r12)
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DUMMY_ENTRY(_restgpr_18)
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lwz r18, -4*(32-18)(r12)
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DUMMY_ENTRY(_restgpr_19)
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lwz r19, -4*(32-19)(r12)
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DUMMY_ENTRY(_restgpr_20)
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lwz r20, -4*(32-20)(r12)
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DUMMY_ENTRY(_restgpr_21)
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lwz r21, -4*(32-21)(r12)
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DUMMY_ENTRY(_restgpr_22)
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lwz r22, -4*(32-22)(r12)
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DUMMY_ENTRY(_restgpr_23)
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lwz r23, -4*(32-23)(r12)
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DUMMY_ENTRY(_restgpr_24)
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lwz r24, -4*(32-24)(r12)
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DUMMY_ENTRY(_restgpr_25)
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lwz r25, -4*(32-25)(r12)
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DUMMY_ENTRY(_restgpr_26)
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lwz r26, -4*(32-26)(r12)
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DUMMY_ENTRY(_restgpr_27)
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lwz r27, -4*(32-27)(r12)
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DUMMY_ENTRY(_restgpr_28)
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lwz r28, -4*(32-28)(r12)
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DUMMY_ENTRY(_restgpr_29)
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lwz r29, -4*(32-29)(r12)
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DUMMY_ENTRY(_restgpr_30)
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lwz r30, -4*(32-30)(r12)
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DUMMY_ENTRY(_restgpr_31)
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lwz r31, -4*(32-31)(r12)
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SPECIAL_EXIT(_restgpr_13)
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//-----------------------------------------------------------------------------
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//
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// _restfpr_<n> -- Restores FPRs
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//
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// On entry:
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// r1 = pointer to stack frame header
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// LR = return address
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//
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// Restores FPR<n> through FPR31 from area preceeding stack frame header
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//
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//-----------------------------------------------------------------------------
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FN_TABLE(_restfpr_14,0,2)
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DUMMY_ENTRY(_restfpr_14)
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.set _restfpr_14.body,.._restfpr_14-2
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lfd f14, -8*(32-14)(r1)
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DUMMY_ENTRY(_restfpr_15)
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lfd f15, -8*(32-15)(r1)
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DUMMY_ENTRY(_restfpr_16)
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lfd f16, -8*(32-16)(r1)
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DUMMY_ENTRY(_restfpr_17)
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lfd f17, -8*(32-17)(r1)
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DUMMY_ENTRY(_restfpr_18)
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lfd f18, -8*(32-18)(r1)
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DUMMY_ENTRY(_restfpr_19)
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lfd f19, -8*(32-19)(r1)
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DUMMY_ENTRY(_restfpr_20)
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lfd f20, -8*(32-20)(r1)
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DUMMY_ENTRY(_restfpr_21)
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lfd f21, -8*(32-21)(r1)
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DUMMY_ENTRY(_restfpr_22)
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lfd f22, -8*(32-22)(r1)
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DUMMY_ENTRY(_restfpr_23)
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lfd f23, -8*(32-23)(r1)
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DUMMY_ENTRY(_restfpr_24)
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lfd f24, -8*(32-24)(r1)
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DUMMY_ENTRY(_restfpr_25)
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lfd f25, -8*(32-25)(r1)
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DUMMY_ENTRY(_restfpr_26)
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lfd f26, -8*(32-26)(r1)
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DUMMY_ENTRY(_restfpr_27)
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lfd f27, -8*(32-27)(r1)
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DUMMY_ENTRY(_restfpr_28)
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lfd f28, -8*(32-28)(r1)
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DUMMY_ENTRY(_restfpr_29)
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lfd f29, -8*(32-29)(r1)
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DUMMY_ENTRY(_restfpr_30)
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lfd f30, -8*(32-30)(r1)
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DUMMY_ENTRY(_restfpr_31)
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lfd f31, -8*(32-31)(r1)
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SPECIAL_EXIT(_restfpr_14)
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//
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// This is a copy of the function table entries for the millicode. It's
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// used with the PPCKD_SYMBOL_SEARCH mechanism in vunwind.c to allow
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// for older versions of miscasm.obj.
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//
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.reldata
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.globl _millicode_table
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_millicode_table:
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.long .._savegpr_13, _savegpr_13.end, 0, 1, .._savegpr_13
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.long .._savefpr_14, _savefpr_14.end, 0, 1, .._savefpr_14
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.long .._restgpr_13, _restgpr_13.end, 0, 2, .._restgpr_13
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.long .._restfpr_14, _restfpr_14.end, 0, 2, .._restfpr_14
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