diff options
Diffstat (limited to 'private/crt32/misc/ppc/miscasm.s')
| -rw-r--r-- | private/crt32/misc/ppc/miscasm.s | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/private/crt32/misc/ppc/miscasm.s b/private/crt32/misc/ppc/miscasm.s new file mode 100644 index 000000000..8fab2f64e --- /dev/null +++ b/private/crt32/misc/ppc/miscasm.s @@ -0,0 +1,273 @@ +// +// Miscellaneous assembly-language routines and data for +// PowerPC RTL +// +#include "ksppc.h" +// +// Copyright 1993 IBM Corporation +// +// By Rick Simpson, 17 August 1993 +// +//----------------------------------------------------------------------------- +// +// These routines save and restore only the GPRs and FPRs. +// +// Saving and restoring of other non-volatile registers (LR, certain +// fields of CR) is the responsibility of in-line prologue and epilogue +// code. +// +//----------------------------------------------------------------------------- +// +// _savegpr_<n> +// Inputs: +// r12 = pointer to END of GPR save area +// LR = return address to invoking prologue +// Saves GPR<n> through GPR31 in area preceeding where r12 points +// +// _savefpr_<n> +// Inputs: +// r1 = pointer to stack frame header +// LR = return address to invoking prologue +// Saves FPR<m> through FPR31 in area preceeding stack frame header +// +//----------------------------------------------------------------------------- +// +// _restgpr_<n> +// Inputs: +// r12 = pointer to END of GPR save area +// LR = return address to invoking prologue +// Restores GPR<n> through GPR31 from area preceeding where r12 points +// +// _restfpr_<m> +// Inputs: +// r1 = pointer to stack frame header +// LR = return address to invoking prologue +// Restores FPR<m> through FPR31 from area preceeding stack frame header +// +//----------------------------------------------------------------------------- + +//----------------------------------------------------------------------------- +// +// _savegpr_<n> -- Save GPRs when FPRs are also saved +// +// On entry: +// r12 = address of END of GPR save area +// LR = return address to prologue +// +// Saves GPR<n> through GPR31 in area preceeding where r12 points +// +//----------------------------------------------------------------------------- + + FN_TABLE(_savegpr_13,0,1) + DUMMY_ENTRY(_savegpr_13) + .set _savegpr_13.body,.._savegpr_13-1 + stw r13, -4*(32-13)(r12) + DUMMY_ENTRY(_savegpr_14) + stw r14, -4*(32-14)(r12) + DUMMY_ENTRY(_savegpr_15) + stw r15, -4*(32-15)(r12) + DUMMY_ENTRY(_savegpr_16) + stw r16, -4*(32-16)(r12) + DUMMY_ENTRY(_savegpr_17) + stw r17, -4*(32-17)(r12) + DUMMY_ENTRY(_savegpr_18) + stw r18, -4*(32-18)(r12) + DUMMY_ENTRY(_savegpr_19) + stw r19, -4*(32-19)(r12) + DUMMY_ENTRY(_savegpr_20) + stw r20, -4*(32-20)(r12) + DUMMY_ENTRY(_savegpr_21) + stw r21, -4*(32-21)(r12) + DUMMY_ENTRY(_savegpr_22) + stw r22, -4*(32-22)(r12) + DUMMY_ENTRY(_savegpr_23) + stw r23, -4*(32-23)(r12) + DUMMY_ENTRY(_savegpr_24) + stw r24, -4*(32-24)(r12) + DUMMY_ENTRY(_savegpr_25) + stw r25, -4*(32-25)(r12) + DUMMY_ENTRY(_savegpr_26) + stw r26, -4*(32-26)(r12) + DUMMY_ENTRY(_savegpr_27) + stw r27, -4*(32-27)(r12) + DUMMY_ENTRY(_savegpr_28) + stw r28, -4*(32-28)(r12) + DUMMY_ENTRY(_savegpr_29) + stw r29, -4*(32-29)(r12) + DUMMY_ENTRY(_savegpr_30) + stw r30, -4*(32-30)(r12) + DUMMY_ENTRY(_savegpr_31) + stw r31, -4*(32-31)(r12) + SPECIAL_EXIT(_savegpr_13) + +//----------------------------------------------------------------------------- +// +// _savefpr_<n> -- Saves FPRs +// +// On entry: +// r1 = pointer to stack frame header +// LR = return address to prologue +// +// Saves FPR<n> through FPR31 in area preceeding stack frame header +// +//----------------------------------------------------------------------------- + + FN_TABLE(_savefpr_14,0,1) + DUMMY_ENTRY(_savefpr_14) + .set _savefpr_14.body,.._savefpr_14-1 + stfd f14, -8*(32-14)(r1) + DUMMY_ENTRY(_savefpr_15) + stfd f15, -8*(32-15)(r1) + DUMMY_ENTRY(_savefpr_16) + stfd f16, -8*(32-16)(r1) + DUMMY_ENTRY(_savefpr_17) + stfd f17, -8*(32-17)(r1) + DUMMY_ENTRY(_savefpr_18) + stfd f18, -8*(32-18)(r1) + DUMMY_ENTRY(_savefpr_19) + stfd f19, -8*(32-19)(r1) + DUMMY_ENTRY(_savefpr_20) + stfd f20, -8*(32-20)(r1) + DUMMY_ENTRY(_savefpr_21) + stfd f21, -8*(32-21)(r1) + DUMMY_ENTRY(_savefpr_22) + stfd f22, -8*(32-22)(r1) + DUMMY_ENTRY(_savefpr_23) + stfd f23, -8*(32-23)(r1) + DUMMY_ENTRY(_savefpr_24) + stfd f24, -8*(32-24)(r1) + DUMMY_ENTRY(_savefpr_25) + stfd f25, -8*(32-25)(r1) + DUMMY_ENTRY(_savefpr_26) + stfd f26, -8*(32-26)(r1) + DUMMY_ENTRY(_savefpr_27) + stfd f27, -8*(32-27)(r1) + DUMMY_ENTRY(_savefpr_28) + stfd f28, -8*(32-28)(r1) + DUMMY_ENTRY(_savefpr_29) + stfd f29, -8*(32-29)(r1) + DUMMY_ENTRY(_savefpr_30) + stfd f30, -8*(32-30)(r1) + DUMMY_ENTRY(_savefpr_31) + stfd f31, -8*(32-31)(r1) + SPECIAL_EXIT(_savefpr_14) + +//----------------------------------------------------------------------------- +// +// _restgpr_<n> -- Restore GPRs when FPRs are also restored +// +// On entry: +// r12 = address of END of GPR save area +// LR = return address +// +// Restores GPR<n> through GPR31 from area preceeding where r12 points +// +//----------------------------------------------------------------------------- + + FN_TABLE(_restgpr_13,0,2) + DUMMY_ENTRY(_restgpr_13) + .set _restgpr_13.body,.._restgpr_13-2 + lwz r13, -4*(32-13)(r12) + DUMMY_ENTRY(_restgpr_14) + lwz r14, -4*(32-14)(r12) + DUMMY_ENTRY(_restgpr_15) + lwz r15, -4*(32-15)(r12) + DUMMY_ENTRY(_restgpr_16) + lwz r16, -4*(32-16)(r12) + DUMMY_ENTRY(_restgpr_17) + lwz r17, -4*(32-17)(r12) + DUMMY_ENTRY(_restgpr_18) + lwz r18, -4*(32-18)(r12) + DUMMY_ENTRY(_restgpr_19) + lwz r19, -4*(32-19)(r12) + DUMMY_ENTRY(_restgpr_20) + lwz r20, -4*(32-20)(r12) + DUMMY_ENTRY(_restgpr_21) + lwz r21, -4*(32-21)(r12) + DUMMY_ENTRY(_restgpr_22) + lwz r22, -4*(32-22)(r12) + DUMMY_ENTRY(_restgpr_23) + lwz r23, -4*(32-23)(r12) + DUMMY_ENTRY(_restgpr_24) + lwz r24, -4*(32-24)(r12) + DUMMY_ENTRY(_restgpr_25) + lwz r25, -4*(32-25)(r12) + DUMMY_ENTRY(_restgpr_26) + lwz r26, -4*(32-26)(r12) + DUMMY_ENTRY(_restgpr_27) + lwz r27, -4*(32-27)(r12) + DUMMY_ENTRY(_restgpr_28) + lwz r28, -4*(32-28)(r12) + DUMMY_ENTRY(_restgpr_29) + lwz r29, -4*(32-29)(r12) + DUMMY_ENTRY(_restgpr_30) + lwz r30, -4*(32-30)(r12) + DUMMY_ENTRY(_restgpr_31) + lwz r31, -4*(32-31)(r12) + SPECIAL_EXIT(_restgpr_13) + +//----------------------------------------------------------------------------- +// +// _restfpr_<n> -- Restores FPRs +// +// On entry: +// r1 = pointer to stack frame header +// LR = return address +// +// Restores FPR<n> through FPR31 from area preceeding stack frame header +// +//----------------------------------------------------------------------------- + + FN_TABLE(_restfpr_14,0,2) + DUMMY_ENTRY(_restfpr_14) + .set _restfpr_14.body,.._restfpr_14-2 + lfd f14, -8*(32-14)(r1) + DUMMY_ENTRY(_restfpr_15) + lfd f15, -8*(32-15)(r1) + DUMMY_ENTRY(_restfpr_16) + lfd f16, -8*(32-16)(r1) + DUMMY_ENTRY(_restfpr_17) + lfd f17, -8*(32-17)(r1) + DUMMY_ENTRY(_restfpr_18) + lfd f18, -8*(32-18)(r1) + DUMMY_ENTRY(_restfpr_19) + lfd f19, -8*(32-19)(r1) + DUMMY_ENTRY(_restfpr_20) + lfd f20, -8*(32-20)(r1) + DUMMY_ENTRY(_restfpr_21) + lfd f21, -8*(32-21)(r1) + DUMMY_ENTRY(_restfpr_22) + lfd f22, -8*(32-22)(r1) + DUMMY_ENTRY(_restfpr_23) + lfd f23, -8*(32-23)(r1) + DUMMY_ENTRY(_restfpr_24) + lfd f24, -8*(32-24)(r1) + DUMMY_ENTRY(_restfpr_25) + lfd f25, -8*(32-25)(r1) + DUMMY_ENTRY(_restfpr_26) + lfd f26, -8*(32-26)(r1) + DUMMY_ENTRY(_restfpr_27) + lfd f27, -8*(32-27)(r1) + DUMMY_ENTRY(_restfpr_28) + lfd f28, -8*(32-28)(r1) + DUMMY_ENTRY(_restfpr_29) + lfd f29, -8*(32-29)(r1) + DUMMY_ENTRY(_restfpr_30) + lfd f30, -8*(32-30)(r1) + DUMMY_ENTRY(_restfpr_31) + lfd f31, -8*(32-31)(r1) + SPECIAL_EXIT(_restfpr_14) + +// +// This is a copy of the function table entries for the millicode. It's +// used with the PPCKD_SYMBOL_SEARCH mechanism in vunwind.c to allow +// for older versions of miscasm.obj. +// + + .reldata + .globl _millicode_table +_millicode_table: + .long .._savegpr_13, _savegpr_13.end, 0, 1, .._savegpr_13 + .long .._savefpr_14, _savefpr_14.end, 0, 1, .._savefpr_14 + .long .._restgpr_13, _restgpr_13.end, 0, 2, .._restgpr_13 + .long .._restfpr_14, _restfpr_14.end, 0, 2, .._restfpr_14 |