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tcg/mips: Remove support for O32 and N32 ABIs

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See previous commit for rationale.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20251009195210.33161-5-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé
2025-10-09 21:52:07 +02:00
committed by Richard Henderson
parent 4384542a57
commit affedc6787
3 changed files with 9 additions and 60 deletions
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common-user/host/mips/safe-syscall.inc.S
-35
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@@ -30,15 +30,9 @@
* arguments being syscall arguments (also 'long').
*/
#if _MIPS_SIM == _ABIO32
/* 8 * 4 = 32 for outgoing parameters; 1 * 4 for s0 save; 1 * 4 for align. */
#define FRAME 40
#define OFS_S0 32
#else
/* 1 * 8 for s0 save; 1 * 8 for align. */
#define FRAME 16
#define OFS_S0 0
#endif
NESTED(safe_syscall_base, FRAME, ra)
@@ -47,34 +41,6 @@ NESTED(safe_syscall_base, FRAME, ra)
.cfi_adjust_cfa_offset FRAME
REG_S s0, OFS_S0(sp)
.cfi_rel_offset s0, OFS_S0
#if _MIPS_SIM == _ABIO32
/*
* The syscall calling convention is nearly the same as C:
* we enter with a0 == &signal_pending
* a1 == syscall number
* a2, a3, stack == syscall arguments
* and return the result in a0
* and the syscall instruction needs
* v0 == syscall number
* a0 ... a3, stack == syscall arguments
* and returns the result in v0
* Shuffle everything around appropriately.
*/
move s0, a0 /* signal_pending pointer */
move v0, a1 /* syscall number */
move a0, a2 /* syscall arguments */
move a1, a3
lw a2, FRAME+16(sp)
lw a3, FRAME+20(sp)
lw t4, FRAME+24(sp)
lw t5, FRAME+28(sp)
lw t6, FRAME+32(sp)
lw t7, FRAME+40(sp)
sw t4, 16(sp)
sw t5, 20(sp)
sw t6, 24(sp)
sw t7, 28(sp)
#else
/*
* The syscall calling convention is nearly the same as C:
* we enter with a0 == &signal_pending
@@ -95,7 +61,6 @@ NESTED(safe_syscall_base, FRAME, ra)
move a3, a5
move a4, a6
move a5, a7
#endif
/*
* This next sequence of code works in conjunction with the